Journal articles on the topic 'Floods Victoria'
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1
Erskine, Wayne D., Lisa M. Turner, and Teresa A. Rose. "Sedimentological and geomorphological effects of the 1997 and 1998 flood sequence on the Lower Snowy River, Victoria." Proceedings of the Royal Society of Victoria 128, no. 2 (2016): 25. http://dx.doi.org/10.1071/rs16010.
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Three floods with flood peak ratios (peak discharge/mean annual flood) ranging between 0.65 and 5.35 occurred on the lower Snowy River in Victoria between June 1997 and August 1998. The June 1998 flood was the largest event downstream of the Rodger River junction where the flood peak ratio was >4. Pre- and post-flood investigations were carried out at the three Snowy River benchmarking sites in Victoria (McKillops Bridge, Sandy Point and Bete Bolong) to determine the impact of the floods on channel-boundary sediments and morphology. Few significant changes in graphic grain-size statistics for channel-boundary sediments were found at McKillops Bridge and Sandy Point. At Bete Bolong, there were many significant changes in the grain-size statistics of both the bed material and bank sediment. The variance and mean of a number of benchfull and bankfull channel morphologic parameters (width, area, mean depth, maximum depth, width‒maximum depth ratio) did not change significantly at McKillops Bridge and Sandy Point. At Bete Bolong, benchfull mean depth and area increased significantly due to bed degradation. Floods with a flood peak ratio of at least 4 are important for mobilising channel-boundary sediments and hence modifying channel morphology on the lower Snowy River.
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Monson, Rebecca. "The 1998 Floods in the Tambo Valley." International Journal of Mass Emergencies & Disasters 22, no. 3 (November 2004): 61–86. http://dx.doi.org/10.1177/028072700402200305.
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This paper examines the flood event of June 1998 and its effect on residents of the upper Tambo Valley, in Victoria south east Australia. While the concept of vulnerability has been widely employed to understand disasters, this case study is unique in that it adopts a long-term historical perspective of vulnerability. It shows that rather than being the result of a chance occurrence of a natural event, the 1998 flood disaster was in fact foreseeable, and the culmination of various social, political, economic and environmental pressures, some of which had existed for well over a century.
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Hughes, Lesley, and Will Steffen. "Climate change in Victoria: trends, predictions and impacts." Proceedings of the Royal Society of Victoria 125, no. 1 (2013): 5. http://dx.doi.org/10.1071/rs13003.
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Australia’s climate is changing, consistent with global trends. Continental average temperatures have increased nearly 1°C since the early 20th century, with warming accelerating since the 1950s. The number of extreme hot days is increasing, whereas the number of cold days and frosts is decreasing. With an average temperature over 1.0°C above the long-term mean, 2005 was Australia’s warmest year on record; 2009 was the second warmest year on record. The decade 2000–2009 was Australia’s warmest. Rainfall has been decreasing in the south-west and south-east of Australia, but increasing in the north-west. The ocean is warming and sea levels are rising, consistent with global averages. Consistent with global and national trends, Victoria’s climate is already changing and will continue to do so, posing significant risks to the State. Over the past few decades Victoria has become hotter and drier, and these trends are likely to continue, together with an increasing intensity and/or frequency of extreme events, such as heatwaves, droughts, bushfires and floods, posing significant risks to the State’s infrastructure, coasts, ecosystems, agriculture and health.
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Williams, Martin A. J. "A river flowing through a desert: late Quaternary environments in the Nile basin – current understanding and unresolved questions." Journal of Palaeosciences 70, no. (1-2) (September 10, 2021): 267–88. http://dx.doi.org/10.54991/jop.2021.22.
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Late Quaternary environments in the Nile Basin reflect the influence of the African summer monsoon upon plant cover, sediment yield and flood discharge in the Ethiopian and Ugandan headwaters of the Nile. Intervals of prolonged and very high Nile flow coincide with times of stronger summer monsoon and have been dated using a combination of 14C, OSL and 10Be methods. Periods of high Nile flow into the eastern Mediterranean coincide with the formation of highly organic sedimentary layers termed sapropels. Ages obtained so far for these times of sustained middle to late Pleistocene high flow in the Blue and White Nile are broadly coeval with sapropel beds S8 (ca 217 ka), S7 (ca 195 ka), S6 (ca 172 ka), S5 (ca 124 ka), S4 (ca 102 ka) S3 (ca 81 ka), S2 (ca 55–50 ka) and S1 (10–6.5 ka). Sapropel 5 (ca 124 ka) was synchronous with extreme Blue Nile floods and the formation of the 386 m lake in the lower White Nile Valley, as well as with a prolonged wet phase in the eastern Sahara. Fluctuations in Nile flow and sapropel formation reflect the influence of the precessional cycle upon the East African monsoon.
Between 75 ka and 19 ka the climate in the Nile headwaters region became progressively colder and drier. During the Last Glacial Maximum, Lake Tana in Ethiopia and Lake Victoria in Uganda became dry, flow in the White Nile was reduced to a trickle, and the Blue Nile and Atbara became highly seasonal bed–load rivers. The return of the summer monsoon at 14.5 ka ushered in extreme Blue Nile floods, widespread flooding across the Nile Basin and the formation of the 382 m lake in the lower White Nile Valley. There was a brief return to aridity during the Younger Dryas (12.8–11.5 ka), after which the climate again became wetter and widespread flooding in the Nile Valley resumed. The early Holocene floods were later followed by incision and creation of the modern relatively narrow flood plain.
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Rainbird, Robert H. "Anatomy of a large-scale braid-plain quartzarenite from the Neoproterozoic Shaler Group, Victoria Island, Northwest Territories, Canada." Canadian Journal of Earth Sciences 29, no. 12 (December 1, 1992): 2537–50. http://dx.doi.org/10.1139/e92-201.
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The Neoproterozoic Kuujjua Formation is an up to 120 m thick, texturally submature quartzarenite typified by laterally persistent tabular planar cosets of simple and compound planar crossbedding, intercalated with rare, thin dolomitic siltstone lenses up to tens of kilometres wide. It is interpreted as the deposit of a big river, occupying a braid plain, at least 150 km wide, which flowed into the Amundsen Basin from the southeast. The dominant elements of this deposit are stacked tabular and laterally continuous compound crossbeds, interpreted as very large channel forms, which migrated mainly by lateral accretion of superposed small- to moderate-scale two-dimensional dunes. Simple planar crossbedding represents moderate to large two-dimensional periodic bedforms deposited in channels. Rare trough crossbedding represents three-dimensional dunes, which probably were deposited in narrow low-stage chutes that cut across the larger bedforms. Dolomitic siltstone lenses are interpreted as deposits of large flood basin playa lakes that were periodically rejuvenated by river floods. Unrestricted migration of the channels back and forth across the braid plain reworked many of the thin lake deposits and produced the observed multistoried sandstone sheet geometry. A prevailing arid climate is indicated by the occurrence of evaporite casts and pseudomorphs in the flood-basin deposits. The Kuujjua Formation shares features with deposits of the Brahmaputra River; however, there appear to be no modern analogues for the thick, large-scale braided-stream deposits that characterized many Proterozoic cratonic basins.
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Zalnezhad, Amir, Ataur Rahman, Mehdi Vafakhah, Bijan Samali, and Farhad Ahamed. "Regional Flood Frequency Analysis Using the FCM-ANFIS Algorithm: A Case Study in South-Eastern Australia." Water 14, no. 10 (May 17, 2022): 1608. http://dx.doi.org/10.3390/w14101608.
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Regional flood frequency analysis (RFFA) is widely used to estimate design floods in ungauged catchments. Both linear and non-linear methods are adopted in RFFA. The development of the non-linear RFFA method Adaptive Neuro-fuzzy Inference System (ANFIS) using data from 181 gauged catchments in south-eastern Australia is presented in this study. Three different types of ANFIS models, Fuzzy C-mean (FCM), Subtractive Clustering (SC), and Grid Partitioning (GP) were adopted, and the results were compared with the Quantile Regression Technique (QRT). It was found that FCM performs better (with relative error (RE) values in the range of 38–60%) than the SC (RE of 44–69%) and GP (RE of 42–78%) models. The FCM performs better for smaller to medium ARIs (2 to 20 years) (ARI of five years having the best performance), and in New South Wales, over Victoria. In many aspects, the QRT and FCM models perform very similarly. These developed RFFA models can be used in south-eastern Australia to derive more accurate flood quantiles. The developed method can easily be adapted to other parts of Australia and other countries. The results of this study will assist in updating the Australian Rainfall Runoff (national guide)-recommended RFFA technique.
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Nobert, Joel, Margaret Mugo, and Hussein Gadain. "Estimation of design floods in ungauged catchments using a regional index flood method. A case study of Lake Victoria Basin in Kenya." Physics and Chemistry of the Earth, Parts A/B/C 67-69 (2014): 4–11. http://dx.doi.org/10.1016/j.pce.2014.02.001.
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Khan, S. I., P. Adhikari, Y. Hong, H. Vergara, R. F Adler, F. Policelli, D. Irwin, T. Korme, and L. Okello. "Hydroclimatology of Lake Victoria region using hydrologic model and satellite remote sensing data." Hydrology and Earth System Sciences 15, no. 1 (January 14, 2011): 107–17. http://dx.doi.org/10.5194/hess-15-107-2011.
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Abstract. Study of hydro-climatology at a range of temporal scales is important in understanding and ultimately mitigating the potential severe impacts of hydrological extreme events such as floods and droughts. Using daily in-situ data over the last two decades combined with the recently available multiple-years satellite remote sensing data, we analyzed and simulated, with a distributed hydrologic model, the hydro-climatology in Nzoia, one of the major contributing sub-basins of Lake Victoria in the East African highlands. The basin, with a semi arid climate, has no sustained base flow contribution to Lake Victoria. The short spell of high discharge showed that rain is the prime cause of floods in the basin. There is only a marginal increase in annual mean discharge over the last 21 years. The 2-, 5- and 10- year peak discharges, for the entire study period showed that more years since the mid 1990's have had high peak discharges despite having relatively less annual rain. The study also presents the hydrologic model calibration and validation results over the Nzoia basin. The spatiotemporal variability of the water cycle components were quantified using a hydrologic model, with in-situ and multi-satellite remote sensing datasets. The model is calibrated using daily observed discharge data for the period between 1985 and 1999, for which model performance is estimated with a Nash Sutcliffe Efficiency (NSCE) of 0.87 and 0.23% bias. The model validation showed an error metrics with NSCE of 0.65 and 1.04% bias. Moreover, the hydrologic capability of satellite precipitation (TRMM-3B42 V6) is evaluated. In terms of reconstruction of the water cycle components the spatial distribution and time series of modeling results for precipitation and runoff showed considerable agreement with the monthly model runoff estimates and gauge observations. Runoff values responded to precipitation events that occurred across the catchment during the wet season from March to early June. The spatially distributed model inputs, states, and outputs, were found to be useful for understanding the hydrologic behavior at the catchment scale. The monthly peak runoff is observed in the months of April, May and November. The analysis revealed a linear relationship between rainfall and runoff for both wet and dry seasons. Satellite precipitation forcing data showed the potential to be used not only for the investigation of water balance but also for addressing issues pertaining to sustainability of the resources at the catchment scale.
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Parkinson, Debra, Alyssa Duncan, Jaspreet Kaur, Frank Archer, and Caroline Spencer. "Gendered aspects of long-term disaster resilience in Victoria, Australia." January 2022 10.47389/37, no. 37.1 (January 2022): 59–64. http://dx.doi.org/10.47389/37.1.59.
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Research conducted in 2018 documented the disaster experiences of 56 women and men in Australia aged between 18 and 93 years. This paper draws out the gendered factors that affected their resilience, and in so doing, begins to address the dearth of research related to gendered aspects of long-term disaster resilience. It is unique in capturing the voices of survivors who spoke of events 9 years after the 2009 Black Saturday fires and of earlier fires and floods in Victoria more than 50 years ago, including the 1983 Ash Wednesday fires. Over decades, gendered expectations of men and women significantly hindered resilience. Men spoke of the long-term cost to them of demands to ‘be strong’ in the worst of disasters and reasons they were reluctant to seek help afterwards. Women spoke of their contributions holding a lesser value and of discrimination. Discussions of violence against women and children after disaster, and suicide ideation in anticipation of future disasters offered critical insights. Protective factors identified by informants were not wholly intrinsic to their character but were also physical, such as essential resources provided in the immediate aftermath, and psychological and community support offered in the long-term. Factors that helped resilience departed from the ‘masculine’ model of coping post-disaster by moving away from a refusal to admit trauma and suffering, to community-wide resilience bolstered by widespread emotional, social and psychological support. Genuine community planning for disasters before they strike builds trust and offers insights for emergency management planners.
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Tryhorn, Lee, Amanda Lynch, Rebecca Abramson, and Kevin Parkyn. "On the Meteorological Mechanisms Driving Postfire Flash Floods: A Case Study." Monthly Weather Review 136, no. 5 (May 1, 2008): 1778–91. http://dx.doi.org/10.1175/2007mwr2218.1.
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Abstract This paper describes work to improve the understanding of the broad range of factors affecting the occurrence of postfire flooding, with emphasis on an event that occurred in the Alpine Shire, Victoria, Australia, in 2003. Analysis and mesoscale modeling of the conditions surrounding the event suggests that the drivers of the extreme rainfall event were above-average precipitable water in the atmosphere, significant values of CAPE, producing strong updrafts within the thunderstorm capable of supporting large quantities of suspended water droplets, and thunderstorm cell regeneration in the same area. However, atmospheric instability was further enhanced by anabatic breezes, above-average boundary layer moisture, and increased surface heating resulting from reduced surface albedo and soil moisture of the recently burned fire surface. Flash flooding resulted, due to 1) the storm cells likely being pulse wet microbursts, 2) cell regeneration over the same area (very little horizontal movement), and 3) the small catchment size. It is likely that a further contributor to the observed flash flood was the reduced infiltration often observed in recently burned catchments; these factors will be explored in a subsequent hydrologic study. It is intended that the mechanisms elucidated in this study will assist in emergency preparedness in the Alpine Shire. Given the warmer conditions expected with near-term anthropogenic climate change for the Alpine Shire, and the concomitant increase in fires, this causal relationship, even for a relatively rare event, has implications for emergency managers and Alpine Shire residents.
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Onyutha, Charles, and Patrick Willems. "Uncertainty in calibrating generalised Pareto distribution to rainfall extremes in Lake Victoria basin." Hydrology Research 46, no. 3 (July 16, 2014): 356–76. http://dx.doi.org/10.2166/nh.2014.052.
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Uncertainty in the calibration of the generalised Pareto distribution (GPD) to rainfall extremes is assessed based on observed and large number of global climate model rainfall time series for nine locations in the Lake Victoria basin (LVB) in Eastern Africa. The class of the GPD suitable for capturing the tail behaviour of the distribution and extreme quantiles is investigated. The best parameter estimation method is selected following comparison of the method of moments, maximum likelihood, L-moments, and weighted linear regression in quantile plots (WLR) to quantify uncertainty in the extreme intensity quantiles by employing the Jackknife method and nonparametric percentile bootstrapping in a combined way. The normal tailed GPD was found suitable. Although the performance of each parameter estimation method was acceptable in a number of evaluation criteria, generally the WLR technique appears to be more robust than others. The difference between upper and lower limits of the 95% confidence intervals expressed as a percentage of the empirical 10-year rainfall intensity quantile ranges from 9.25 up to 59.66%. The assessed uncertainty will be useful in support of risk based planning, design and operation of water engineering and water management applications related to floods in the LVB.
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Khan, S. I., P. Adhikari, Y. Hong, H. Vergara, T. Grout, R. F. Adler, F. Policelli, D. Irwin, T. Korme, and L. Okello. "Observed and simulated hydroclimatology using distributed hydrologic model from in-situ and multi-satellite remote sensing datasets in Lake Victoria region in East Africa." Hydrology and Earth System Sciences Discussions 7, no. 4 (July 22, 2010): 4785–816. http://dx.doi.org/10.5194/hessd-7-4785-2010.
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Abstract. Floods and droughts are common, recurring natural hazards in East African nations. Studies of hydro-climatology at daily, seasonal, and annual time scale is an important in understanding and ultimately minimizing the impacts of such hazards. Using daily in-situ data over the last two decades combined with the recently available multiple-years satellite remote sensing data, we analyzed and simulated, with a distributed hydrologic model, the hydro-climatology in Nzoia, one of the major contributing sub-basins of Lake Victoria in the East African highlands. The basin, with a semi arid climate, has no sustained base flow contribution to Lake Victoria. The short spell of high discharge showed that rain is the prime cause of floods in the basin. There is only a marginal increase in annual mean discharge over the last 21 years. The 2-, 5- and 10-year peak discharges, for the entire study period showed that more years since the mid 1990's have had high peak discharges despite having relatively less annual rain. The study also presents the hydrologic model calibration and validation results over the Nzoia Basin. The spatiotemporal variability of the water cycle components were quantified using a physically-based, distributed hydrologic model, with in-situ and multi-satellite remote sensing datasets. Moreover, the hydrologic capability of remote sensing data such as TRMM-3B42V6 was tested in terms of reconstruction of the water cycle components. The spatial distribution and time series of modeling results for precipitation (P), evapotranspiration (ET), and change in storage (dS/dt) showed considerable agreement with the monthly model runoff estimates and gauge observations. Runoff values responded to precipitation events that occurred across the catchment during the wet season from March to early June. The hydrologic model captured the spatial variability of the soil moisture storage. The spatially distributed model inputs, states, and outputs, were found to be useful for understanding the hydrologic behavior at the catchment scale. Relatively high flows were experienced near the basin outlet from previous rainfall, with a new flood peak responding to the rainfall in the upper part of the basin. The monthly peak runoff was observed in the months of April, May and November. The analysis revealed a linear relationship between rainfall and runoff for both wet and dry seasons. The model was found to be useful in poorly gauged catchments using satellite forcing data and showed the potential to be used not only for the investigation of the catchment scale water balance but also for addressing issues pertaining to sustainability of the resources within the catchment.
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Entwisle, TJ. "Phenology of the Cladophora-Stigeoclonium community in Two Urban Creeks of Melbourne." Marine and Freshwater Research 40, no. 5 (1989): 471. http://dx.doi.org/10.1071/mf9890471.
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Cladophora glomerata and Stigeoclonium tenue dominate lowland urban creeks in the Yarra River basin of south-central Victoria. In Darebin and Merri Creeks, Cladophora produces extensive mats in summer and autumn, and is mostly replaced by Stigeoclonium in winter and spring. Although Stigeoclonium can grow all year round, it only outcompetes Cladophora in winter and spring, when air temperatures range between a maximum of < 15� C and a nightly minimum of < 10� C (water temperature < 15� C, usually about 10� C). The seasonal composition and abundance of these macroalgae depend on temperature and on the severity of, and time since, the last floods, and the effect that these factors have on interspecific competition. Features of the microhabitat (e.g. photon irradiance, substratum stability and composition, and mean flow rates) determine the range of these variations. The biomass of both macroalgae fluctuates widely; this is due mainly to floods, which can remove almost the entire standing crop. In off-seasons, both species are maintained by small resilient plants or protected populations (in culture, plants remain viable after up to 6 months in complete darkness). Filaments of Cladophora readily produce zoospores and new vegetative growth following dormancy. The prostrate thallus of Stigeoclonium initiates new erect filaments before zoospores are produced. An understanding of the large local and seasonal variations in macroalgal biomass is essential for biological monitoring programmes.
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Sharpe, David R. "Late Glacial landforms of Wollaston Peninsula, Victoria Island, Northwest Territories: product of ice-marginal retreat, surge, and mass stagnation." Canadian Journal of Earth Sciences 25, no. 2 (February 1, 1988): 262–79. http://dx.doi.org/10.1139/e88-029.
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An analysis of glacial landforms on a regional scale leads to an interpretation of the dynamics of Late Wisconsinan glaciation on Wollaston Peninsula, Victoria Island, Northwest Territories. The glacial record is dominated by four adjacent belts of landforms: (I) ground moraine (till plains and ice-marginal drainage features), (II) hummocky moraine, (III) lateral and shear moraine, and (IV) streamlined landforms. The landform belts are considered as representing four distinct glacial ice conditions or regimes: (1) ice-margin retreat during extending flow of thin, active ice; (2) marginal ice stagnation following compressional flow; (3) a surging ice margin producing massive shear moraines; and (4) large-scale flooding and mass ice stagnation following a surge. These landform belts were arranged in zones by topographically controlled glacial dynamics, the latter two defining a former ice stream.Glaciological inferences can be extended by examining the sediments and processes that produced each landform set. Ground-moraine sediments were produced mainly subglacially from melt out or lodgment of glacial debris. Hummocky moraine resulted from debris flow and meltwater deposition controlled by ice, from resedimentation by sediment gravity flow, and from slump. Compressional shearing stacked thick deposits of drift prior to resedimentation. Simple lateral or end moraines may comprise interbedded sediment gravity flows deposited at static ice margins. Deformed lateral moraines resulted from intense marginal compressive flow that sheared and stacked thick, coarse sediment ridges or plates. This lateral shearing may be attributed to streaming or large ice surges. Drumlin exposures showed undeformed, interbedded, stratified sediments that appear to have accumulated in a subglacial cavity; there is no deformation related to high subglacial stress. Subglacial meltwater floods may have followed glacier surge. The greatly extended and thinner ice mass produced by the surge melted in place as clean (debris-free) ice.
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Overton, I. C., I. D. Jolly, P. G. Slavich, M. M. Lewis, and G. R. Walker. "Modelling vegetation health from the interaction of saline groundwater and flooding on the Chowilla floodplain, South Australia." Australian Journal of Botany 54, no. 2 (2006): 207. http://dx.doi.org/10.1071/bt05020.
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The native riparian vegetation communities on the Chowilla floodplain in the lower River Murray in South Australia are suffering severe declines in health, particularly the Eucalyptus camaldulensis Dehnh. (red gum) and Eucalyptus largiflorens F.Muell. (black box) communities. The primary cause of the decline is salinisation of the floodplain soils caused by increased rates of groundwater discharge and hence increased movement of salt up into the plant root zone. The salinity is driven by a lack of flooding and rising saline groundwater tables. Rises in the naturally saline groundwater levels are due to the effects of river regulation from Lock 6 and high inflows from regional groundwater levels increased by Lake Victoria to the east. River regulation has also led to reduced frequency and duration of the floods that leach salt from the plant root zone and supply fresh water for transpiration. The frequency of medium-sized floods occurring on Chowilla has been reduced by a factor of three since locking and water extractions were commenced in the 1920s to provide reliable water for urban and agricultural use. The soil salinisation on the floodplain was modelled by using a spatial and temporal model of salt accumulation from groundwater depth, groundwater salinity, soil type and flooding frequency. The derived soil water availability index (WINDS) is used to infer vegetation health and was calibrated against current extent of vegetation health as assessed from fieldwork and satellite image analysis. The modelling work has shown that there is a severe risk to the floodplain vegetation from current flow regimes. This paper estimates that 65% (5658 ha) of the 8600 ha of floodplain trees are affected by soil salinisation matching a field survey of vegetation health in 2003 (Department of Environment and Heritage 2005a), compared with 40% in 1993 (Taylor et al. 1996). Model results show that the best management option for Chowilla is lowering the groundwater down to 2 m below current levels, which predicts an improvement in the health of the floodplain tree species from 35 to 42%.
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Nuwagira, Upton, and Igga Yasin. "Review of the Past, Current, and the Future Trend of the Climate Change and its Impact in Uganda." East African Journal of Environment and Natural Resources 5, no. 1 (April 9, 2022): 115–26. http://dx.doi.org/10.37284/eajenr.5.1.605.
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Climate change is a big problem in Sub-Saharan Africa because it brings about prolonged droughts and heavy rainfall that destroys crops. Further, heavy rainfall amounts throughout the entire region have caused flooding and landslides, thus leaving many houses destroyed and people and animals dead. However, the past, current, and future trends of climate change and its impact in Uganda remain unachieved. In this paper, we: 1) analyse the past, current, and future climate change in Uganda; 2) determine the relationship between climate variables; and 3) review the impact of climate change in Uganda. Our study employed the use of secondary data from authentic sources such as the National Aeronautics and Space Administration, journal articles, and books. We used Inverse Distance Weighing interpolation to show the trend of climate change in Uganda. We employed the PCA to show the variation between climate variables in different regions in Uganda. Our data shows that the mean ± SD of temperature (25.24±3.85), rainfall (1252.5±476.9), relative humidity (63.45±7.11), and solar (19.831±1.46) from 1982 to 2019. One Way ANOVA showed a significant difference between temperature (p = 0.003), relative humidity (p = 0.00), and solar radiation (p = 0.00), while rainfall did not vary between regions (p = 0.239). Our study evidences that the current climate change impacts in Uganda include prolonged drought, which causes water stress and increases crop loss, floods, landslides, invasion of locusts, rises in lake water levels, and floating islands on Lake Victoria.
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Young, Kathy L., W. Robert Bolton, Ånund Killingtveit, and Daqing Yang. "Assessment of precipitation and snowcover in northern research basins*." Hydrology Research 37, no. 4-5 (August 1, 2006): 377–91. http://dx.doi.org/10.2166/nh.2006.021.
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In 2004, a workshop was held to collect and synthesize the water balance data from 39 northern research basins (NRB) in Victoria, BC, Canada. One of the recommendations from the meeting was a need to review systematically each component of the water balance for these northern basins in order to identify spatial and temporal trends and to address significant knowledge gaps. Here, we assess the methodologies for measuring snow and rain in these northern basins; examine the temporal and spatial patterns of snow accumulation both during and at the end-of-the winter; consider ablation patterns and comment on the occurrence of extreme events. Our evaluation indicates that northern hydrologists still employ a variety of gauges and approaches to both measure and correct precipitation. For the NRB, rainfall contributions dominate in lower latitudes while snowfall gains importance with higher latitudes and altitude. Occurrence of large water bodies, topography (i.e. aspect, slope) and vegetation influence precipitation amount and its distribution across the landscape. Only two NRB studies showed a declining trend in snowcover (SWE). Snow is still considered the most important input of water in these northern basins, but extreme summer precipitation events (both rain and snow) have triggered higher magnitude floods than seasonal snowmelt runoff. Glacierized basins are sensitive to summer snowfalls and low winter snow storage. Both have the potential to dampen or enhance melting despite warmer or cooler air temperatures. Standardized gauges, approaches and continued monitoring of the NRB is encouraged.
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Kornakova, Maria, and Alan March. "The role of citizens in DRR planning exercises: when to inform or consult." International Journal of Disaster Resilience in the Built Environment 8, no. 02 (April 10, 2017): 209–22. http://dx.doi.org/10.1108/ijdrbe-12-2014-0077.
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Purpose The purpose of this research paper is to explore the role and effectiveness of particular participation styles that affect the effectiveness of urban planning being integrated with disaster risk reduction (DRR) practices. Design/methodology/approach This research was conducted using a heuristic approach to the examination of urban planning and DRR practices focussing particularly upon citizens’ participation in four case studies internationally: the UK floods in 2007; Hurricane Katrina in the USA in 2005; wildfires of 2009 in Victoria, Australia; and Swiss avalanche prevention and preparedness. Desktop research was conducted to analyse cases and identify key findings, confirmed and augmented by interviews with relevant specialists in each country through semi-structured interviews. Findings The research reveals some similarities across all four cases studied. It appears that urban planning and DRR approaches, particularly those with a regulatory outcome and based on highly technical tests, are common. Further, it is apparent in the cases studied that circumstances where deeper technical knowledge and/or self-interest are strong factors, that informing and sometimes consulting styles are the most appropriate. While the scope of the paper means that this principle cannot be widely applied, there is a need to investigate these issues further. Research limitations/implications The heuristic and inductive nature of this research limits the potential for in-depth analyses of the case studies, but rather provides a base for future research in this area, which currently has limited literature. Originality/value This study provides a wide base for future research and partially addresses the gap in the literature on the topic of integration of urban planning and DRR with a focus on the community involvement in it.
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Turyahabwe, Nelson, David Mwesigye Tumusiime, Willy Kakuru, and Bernard Barasa. "Wetland Use/Cover Changes and Local Perceptions in Uganda." Sustainable Agriculture Research 2, no. 4 (September 1, 2013): 95. http://dx.doi.org/10.5539/sar.v2n4p95.
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<p>With increasing population, coupled with land shortage and weather variations, wetlands in Uganda have continued to face degradation due to mainly conversion for agricultural, industrial and settlement purposes. The objective of this study was to determine the spatial and temporal wetland use/cover changes and local perceptions attributed to these changes. The study utilized three sets of ortho-rectified and cloud free Landsat TM/ETM+/MSS temporal images (30 m) of 1986, 2000 and 2011. The classification procedures were carried out using an Integrated Land and Water Information System (ILWIS) software version 3.7. A wetland classification system for Uganda developed by the National Biomass Study, 2003 was adopted to describe the wetland use/cover types. The classified images were validated in a ground truthing exercise using Global Positioning System (GPS) to improve on the classification accuracy. Key informant interviews and focus group discussions were conducted with communities adjacent to the wetlands in each of three of the ten Ugandan agro-ecological zones to determine the underlying drivers of wetland use/cover changes, while household interviews generated information on local perceptions of the changes. Significant changes were mainly observed in wetland use/cover between 1986 and 2011. Major factors responsible for these changes were subsistence farming due to intensification of growing paddy rice in Kyoga plains, an influx of migrants who accessed wetlands for daily subsistence (livestock grazing) in South western farmlands and proximity to urban centres in the Lake Victoria Crescent. In all the sampled agro-ecological zones, increased crop farming in wetlands was due to changing opportunities created by existent large markets for wetland crops. Majority (60%) of the local people perceived wetlands in their proximity to have undergone high degradation within the last 10 years, and to have declined in quantity and quality of vegetation, soil fertility and water levels. There was a noticeable variation across the sampled agro-ecological zones, with the highest proportion of local communities perceiving degradation being in Kyoga plains (76%), followed by Lake Victoria crescent (63%) and South-western farmlands (41%). Locally perceived threats to wetlands were mainly from crop growing that accounted for 33% of the frequency of mentioned threats, collection of wetland resources (30%), and prolonged floods and droughts (12%). This study confirms the importance of economic opportunities from new market outlets and migration in its various forms as key factors in land use change, especially at timescales of a couple of decades.<strong></strong></p>
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Cooney, Phillip. "2011 PESA industry review: exploration." APPEA Journal 52, no. 1 (2012): 67. http://dx.doi.org/10.1071/aj11006.
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A continuing high and stable oil price through the latter part of 2011, oscillating around US$120 in the case of Tapis Crude, underpinned a small increase in exploration in 2011 in Australia compared with 2010, although there were marked regional differences between the northwest and southeast parts of the country. Exploration continued to be focused on the northwest offshore seeking incremental reserve additions of conventional gas to support planned and proposed liquid natural gas (LNG) projects and although information is hard to confirm, in general this program appears to have been successful with a number of relatively smaller discoveries and at least one major find, Zola–1. In the Cooper Basin exploration activity resumed after almost being shut down by floods in 2010, although flooding continued to be a problem in 2011. In the South Australian part, 27 new field wildcat (NFW) wells were drilled in 2011 compared with 8 in 2010. The program was also marked by a high rate of success. The other current major area of activity, the Queensland coal seam gas (CSG) program was also affected by flooding early in 2011 with 524 coal seam gas (CSG) wells drilled this year, compared with 648 in 2010 and more than 900 in 2009. In many jurisdictions shale gas or shale oil wells are not reported separately and are included in conventional petroleum wells in this report. Exploration for geothermal resources continued at a relatively low level with only 10 wells drilled in Australia in 2011, the most active state was Victoria with five wells. Despite the increase in activity, preliminary indications are that total exploration expenditure in 2011 will be less than in 2010. It is interesting to note that while the exploration effort in terms of wells and seismic has not changed much in the last few years the total expenditure has steadily increased in part reflecting the movement into deeper water drilling.
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Ishak, Elias, and Ataur Rahman. "Detection of changes in flood data in Victoria, Australia from 1975 to 2011." Hydrology Research 46, no. 5 (August 30, 2014): 763–76. http://dx.doi.org/10.2166/nh.2014.064.
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Changes in observed streamflow records for 131 catchments from the state of Victoria in southeast Australia are investigated for the 1975–2011 study period. Seven flood indices are considered which are derived from annual maximum, peak-over-threshold (POT) and monthly maximum flood series. Trend analyses are undertaken using Mann–Kendall (MK) and seasonal MK tests along with the bootstrap resampling approach to account for serial correlation. A common trend direction in all months in streamflow data for the majority of the stations has been identified by Van Belle and Hughes’ homogeneity test. Trend analyses results show the percentages of stations exhibiting significant downward trends ranges from 4 to 35% at 5% significance level, which is generally higher than the percentage of stations to occur by chance. Good agreement is found between trends in the AM and POT flood magnitude time series, and separately in the POT flood frequency time series, but not between flood magnitude and their associated frequency series. More stations with significant negative trends have transpired in the AM than in the POT flood data series. Resemblance in the results between both the MK and seasonal MK tests for most of the catchments is also noticed.
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Lilly, Iwona. "Dear Mother Victoria." Interdyscyplinarne Konteksty Pedagogiki Specjalnej, no. 32 (March 15, 2021): 213–26. http://dx.doi.org/10.14746/ikps.2021.32.11.
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Motherhood is by many, especially women, one of the greatest experiences in life. The ultimate goal that women, if not all than many, should achieve. Nowadays, we are flooded with help books, websites, guides that lead us through pregnancy and then assist us during the first months of our new born baby. This blessed state seems to be cherished now above all, however, this view was not always the same. Throughout history we can see many women for whom maternity was not meant to be and still they were able to fulfil their life-time goals devoting themselves to other areas of life. For some, maternity was rather a political aspect that would secure the future of the nation. In my article I will focus on the aspect of motherhood through the eyes of Queen Victoria for whom, indeed, maternity was rather an unwelcomed addition to her royal life. I will discuss her own rigid upbringing which can help to understand her later attitude towards her own children. The trend, where there were no proper roles ascribed to parents in terms of their influence on their children, was predominant in the 19th century and based on this we can see how important it was for character creation
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Ghofrani, Zahra, Victor Sposito, and Robert Faggian. "Improving flood monitoring in rural areas using remote sensing." Water Practice and Technology 14, no. 1 (December 8, 2018): 160–71. http://dx.doi.org/10.2166/wpt.2018.118.
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Abstract Precise information on the extent of inundated land is required for flood monitoring, relief, and protective measures. In this paper, two spectral indices, Normalized Difference Water Index (NDWI) and Modified Normalized Difference Water Index (MNDWI), were used to identify inundated areas during heavy rainfall events in the Tarwin catchment, Victoria, Australia, using Landsat-8 OLI imagery. By integrating the assessed condition of levees, this research also explains the inefficiency of the flood control measures of this region of Australia. NDWI and MNDWI indices performed well, but water features were enhanced better in the NDWI-derived image, with an accuracy of 96.04% and Kappa coefficient of 0.83.
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REECE, R. L., M. D. O'ROURKE, D. A. BARR, and D. C. GRlX. "Haemagglutinating adenovirus in Victorian chicken flocks 1980–83." Australian Veterinary Journal 62, no. 5 (May 1985): 174–75. http://dx.doi.org/10.1111/j.1751-0813.1985.tb07285.x.
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Melick, DR. "Flood Resistance of Tristaniopsis laurina and Acmena smithii From Riparian Warm Temperate Rain-Forest in Victoria." Australian Journal of Botany 38, no. 4 (1990): 371. http://dx.doi.org/10.1071/bt9900371.
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The responses of seedlings of Tristaniopsis laurina and Acmena smithii, two important tree species in riparian warm temperate rainforest communities in Victoria, are investigated in relation to flood disturbances. Freshly germinated A. smithii seedlings had died within 5 weeks of complete waterlogging in the greenhouse, and although the young T. laurina seedlings survived waterlogging for 14 weeks, their growth rate was curtailed. Nine-month-old seedlings of both species were found to be relatively tolerant to waterlogging, forming aerenchymatous surface roots after 40 days of flooding. Neither species suffered leaf abscission or demonstrated any other signs of water stress commonly associated with flood intolerant species. In experiments to determine the resilience of these species to physical flood damage, both species also demonstrated a capacity to regenerate vegetatively following the removal of above ground parts in young seedlings. The heartwood of T. laurina was found to be more decay resistant than that of other species in the field including that of A. smithii. The significance of these results are discussed in relation to other factors examined in earlier papers adding to the understanding of the ecological status of these species within the riparian rainforest communities.
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Ehnenn, Jill R. "From “We Other Victorians” to “Pussy Grabs Back”: Thinking Gender, Thinking Sex, and Feminist Methodological Futures in Victorian Studies Today." Victorian Literature and Culture 47, no. 1 (December 7, 2018): 35–62. http://dx.doi.org/10.1017/s1060150318001298.
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Although this essay is about reading texts from the past, I begin with the present, with a US president who was elected despite widespread knowledge that he had infamously boasted about how he often starts kissing beautiful women without consent. “I don't even wait,” he crowed. “When you're a star they let you do it. You can do anything. Grab ’em by the pussy. You can do anything.” The internet was soon flooded with angry feminist responses to his crass admission of sexual violence, retorts that appropriated his use of vulgar language with wit and resistance, the most prevalent being the meme “Pussy Grabs Back!” (see fig. 1). The Pussy Hat Project soon followed. As we know, the pussy hat phenomenon offended some who felt it was racist (not all vulvas are pink) and/or transphobic (not all women have pussies). Nevertheless, a sea of pink pussy hats, worn by persons of many embodiments and identity categories, would be seen in protest, worldwide, at the record-breaking post-inauguration Women's Marches across the globe. If “Grab ’em by the pussy” rightly offended, “Pussy Grabs Back!” gained traction.
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Mukwanason, Darren Edson, Enock Kajubi, Charles Mwase, Mary Akurut, Muzafalu Kayondo, and Harrison E Mutikanga. "Assessment of reservoir response to flood conditions to optimize hydropower operations – Isimba HPP Uganda." E3S Web of Conferences 346 (2022): 03016. http://dx.doi.org/10.1051/e3sconf/202234603016.
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Lake Victoria is the largest tropical lake in the world and the source of river Nile, the longest river in the world. Due to prolonged precipitation above the average over the past two years, the lake water levels have increased surpassing the highest ever recorded of 13.41m in 1964. To mitigate the negative impacts on the people, navigation and developments in the flood zones, lake outflows were gradually increased from 1000cumecs to 2400cumecs. Isimba Hydropower Plant (HPP) with a reservoir capacity of 170 million cubic meters is the fourth hydropower plant along the upper Nile cascade with a design flood level of 1055m above sea level. Reservoir operation is constrained by the bridge construction and ferry operation works downstream which are affected by the increased discharges. There is also uncertainty of the incoming discharge magnitude and travel time due to lack of an upstream gauging station. This paper seeks to assess the reservoir response to the increasing flood conditions using Hydrologic Engineering software for flood routing and to model an operation water level (OWL) that optimizes power production and flood control whilst ensuring public safety of the downstream activities through real-time forecasts in the short term.
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Noor, Farhana, Orpita U. Laz, Khaled Haddad, Mohammad A. Alim, and Ataur Rahman. "Comparison between Quantile Regression Technique and Generalised Additive Model for Regional Flood Frequency Analysis: A Case Study for Victoria, Australia." Water 14, no. 22 (November 11, 2022): 3627. http://dx.doi.org/10.3390/w14223627.
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For design flood estimation in ungauged catchments, Regional Flood Frequency Analysis (RFFA) is commonly used. Most of the RFFA methods are primarily based on linear modelling approaches, which do not account for the inherent nonlinearity of rainfall-runoff processes. Using data from 114 catchments in Victoria, Australia, this study employs the Generalised Additive Model (GAM) in RFFA and compares the results with linear method known as Quantile Regression Technique (QRT). The GAM model performance is found to be better for smaller return periods (i.e., 2, 5 and 10 years) with a median relative error ranging 16–41%. For higher return periods (i.e., 20, 50 and 100 years), log-log linear regression model (QRT) outperforms the GAM model with a median relative error ranging 31–59%.
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Vivian, L. M., K. A. Ward, D. J. Marshall, and R. C. Godfree. "Pseudoraphis spinescens (Poaceae) grasslands at Barmah Forest, Victoria, Australia: current distribution and implications for floodplain conservation." Australian Journal of Botany 63, no. 6 (2015): 526. http://dx.doi.org/10.1071/bt15090.
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Floodplain grasslands are highly productive ecosystems that are becoming increasingly degraded and fragmented because of changes to natural flood regimes. In this work, we mapped and quantified the distribution of Pseudoraphis spinescens – an ecologically important mat-forming grass – in treeless floodplain grasslands in the Barmah Forest, Victoria, Australia, across two seasons. Although P. spinescens was once widespread in the forest, there has been a decline in its extent, particularly since the Millennium Drought (2001–09) and subsequent unseasonal and prolonged La Niña-associated flooding from late 2010 to 2012. Our detailed on-ground surveys show that only 182 ha of P. spinescens grassland remain in treeless areas of Barmah Forest, representing ~12% of the total area of treeless plains and lakes. Critically, just 51 ha of the thick monospecific P. spinescens swards that were a historically important part of the floodplain vegetation was located and mapped. Although there was a small increase in the area of P. spinescens in some treeless areas following a favourable flood season in 2013–14, the boundaries of most grassland patches remained relatively stable during this period. Potential drivers of the overall decline in P. spinescens across Barmah Forest include the direct and indirect impacts of altered flood regimes, drought, and grazing pressure. Improved understanding of these drivers and their interactions, as well as the status of the seedbank, will be crucial for future management and conservation of these floodplain grasslands.
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Meyer, Britta S., Adrian Indermaur, Xenia Ehrensperger, Bernd Egger, Gaspard Banyankimbona, Jos Snoeks, and Walter Salzburger. "Back to Tanganyika: a case of recent trans-species-flock dispersal in East African haplochromine cichlid fishes." Royal Society Open Science 2, no. 3 (March 2015): 140498. http://dx.doi.org/10.1098/rsos.140498.
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The species flocks of cichlid fishes in the East African Great Lakes are the largest vertebrate adaptive radiations in the world and illustrious textbook examples of convergent evolution between independent species assemblages. Although recent studies suggest some degrees of genetic exchange between riverine taxa and the lake faunas, not a single cichlid species is known from Lakes Tanganyika, Malawi and Victoria that is derived from the radiation associated with another of these lakes. Here, we report the discovery of a haplochromine cichlid species in Lake Tanganyika, which belongs genetically to the species flock of haplochromines of the Lake Victoria region. The new species colonized Lake Tanganyika only recently, suggesting that faunal exchange across watersheds and, hence, between isolated ichthyofaunas, is more common than previously thought.
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Fenna, Andrew. "Briefing: Impacts of Victorian engineering on a modern flood risk study." Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics 165, no. 2 (June 2012): 83–87. http://dx.doi.org/10.1680/eacm.10.00035.
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Callaghan, Jeff. "A comparison of weather systems in 1870 and 1956 leading to extreme floods in the Murray–Darling Basin." Journal of Southern Hemisphere Earth Systems Science 69, no. 1 (2019): 84. http://dx.doi.org/10.1071/es19003.
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This research is the extension of a project studying the impact of 19th century severe weather events in Australia and their relation to similar events during the 20th and 21st century. Two floods with the worst known impacts in the Murray–Darling Basin (MDB) are studied. One of these events which occurred during 1956 is relativelywell known and the Bureau of Meteorology archives contain good rainfall data covering the period. Additionally, information on the weather systems causing this rainfall can be obtained. Rainfall, flood and weather system data for this event are presented here and compared with a devastating event during 1870. Although archived Australian rainfall data is negligible during 1870 and there is no record of weather systems affecting Australia during that year, a realistic history of the floods and weather systems in the MDB during 1870 is created. This follows an extensive search through newspaper archives contained in the National Library of Australia’s web site. Examples are presented showing how the meteorological data in 19th century newspapers can be used to create weather charts. Six such events in 1870 are demonstrated and three of these had a phenomenal effect on the Murray–Darling system. The 1870 floods followed drought type conditions and it is remarkable that it was worse in many ways than the 1956 event which followed flood conditions in the MDB during the previous year. The events in 1870 caused much loss of life from drowning in the MDB in particular froman east coast low (ECL) in April 1870 and two Victorian weather systems in September and October 1870. In 1956, there were also record-breaking events especially during March when all-time record monthly rainfall were reported in New South Wales. Overall the greatest impact from flooding across the whole MDB was associated with the 1870 flooding. Analyses of heavy rainfall areas in the MDB showed a linear trend increase from 1900 to 2018. Analysing the same data using an 8-year moving average highlighted three peaks around the five highest annual rainfall years. The largest peak occurred around 1950 and 1956, the second largest around 1973 and 1974 and the third around 2010. Each of these 5 years occurred during negative phases of the Interdecadal Pacific Oscillation (IPO) and positive phases of the Southern Oscillation Index (SOI). Studies have shown that the SOI is a climate driver in the MDB along with a persistent blocking high-pressure systems south of Australia along longitude 140°E with a low to its north. Three major blocking events with record rainfall and flooding in the MDB occurred in 1983, 1984 and 1990. Thiswas during the period 1977–1990 when blocking was conducive to heavy rain in the MDB and was coincidentwith a positive phase of the IPO, thus helping conflictwith the IPO–MDB heavy rainfall relationship. Persistent and unexplained middle level westerly winds kept subtropical Queensland clear of tropical cyclones during the negative phases of the IPO from 1999 to 2009 and during the 1960s, influencing low rainfall in the MDB during those periods.
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Dufty, Neil. "Understanding and improving community flood preparedness and response: a research framework." April 2021 10.47389/36, No 2 (April 2021): 19–25. http://dx.doi.org/10.47389/36.2.19.
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Many social research projects identify issues with community disaster preparedness and response but struggle to attribute these issues to underlying causes and recommend possible ways to address them. A research framework that considers the underlying causes of preparedness and response and possible interventions was developed for the Wimmera region of Victoria, Australia. The research framework was developed in conjunction with the Wimmera Catchment Management Authority and tested in a social research project across 6 communities in the Wimmera region. This paper provides an outline and rationale for the components of the research framework. It also summarises the regional flood insight afforded by the research framework. The research framework, albeit with some limitations, has universal appeal not only in the examination of community flood preparedness and response, but also for other hazards and other parts of the disaster management cycle.
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Kaplow, M., S. Charest, N. Mayo, and S. Benaroya. "Managing Patient Length of Stay Better Using an Appropriateness Tool." Healthcare Management Forum 11, no. 2 (July 1998): 13–16. http://dx.doi.org/10.1016/s0840-4704(10)60640-0.
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A multidisciplinary group from two medical floors at the Royal Victoria Hospital chose the Managed Care Appropriateness Program (MCAP) to evaluate the appropriateness of the days of stay for their patients. Of 100 charts of consecutive patients examined by the nurse reviewer (comprising 1,095 patient days), 33 percent of the days were deemed inappropriate. The reasons for each of these inappropriate days were documented, and strategies were implemented to address the issues. The major outcome of the study was a change in the culture of the health professionals to a more positive approach to defining and carrying out efficient patient care.
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Unverfärth, Jan, Thomas Mörs, and Benjamin Bomfleur. "Palynological evidence supporting widespread synchronicity of Early Jurassic silicic volcanism throughout the Transantarctic Basin." Antarctic Science 32, no. 5 (July 7, 2020): 396–97. http://dx.doi.org/10.1017/s0954102020000346.
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Throughout the Transantarctic Mountains, Early Jurassic silicic magmatism preceding the emplacement of the Ferrar flood-basalt province (Heimann et al. 1994) is documented by the increasing input of silicic ash into otherwise epiclastic, fluviolacustrine deposits of the Beacon Supergroup (see Elliot et al. 2017). Vertebrate biostratigraphy and radiometric analyses indicate a Sinemurian to Pliensbachian age span for silicic volcaniclastic deposits in the central Transantarctic Mountains (CTMs) (Elliot et al. 2017). For northern Victoria Land (NVL), radiometric geochronology and palynostratigraphy revealed that explosive silicic volcanism began with minor pulses during the early Sinemurian (c. 195 Ma) and reached a peak phase beginning in the middle Pliensbachian (c. 187 Ma) (Bomfleur et al. 2014). A basin-wide correlation of these widely separated age frameworks has so far been hampered by the scarcity of data on coeval deposits in southern Victoria Land (SVL). Here, we present new palynostratigraphic data from mixed epiclastic–volcaniclastic deposits in the Prince Albert Mountains that provide supporting evidence for the widespread synchronicity of silicic volcanic episodes preceding Ferrar magmatism.
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Watson, D. J., and G. Drysdale. "Irrigation practices on north-east Victorian dairy farms: a survey." Australian Journal of Experimental Agriculture 45, no. 12 (2005): 1539. http://dx.doi.org/10.1071/ea03231.
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The north-east region of Victoria is an important water-harvesting catchment for gravity-fed irrigators downstream of Lake Mulwala. Dairy farmers are significant users of irrigation water in north-east Victoria but little was known about their irrigation practices and attitudes. A survey undertaken in 2000 collected data on irrigation practices and attitudes from 92% of the irrigating dairy farmers in the region. It found diversity in many aspects of irrigation amongst the region’s irrigated dairy farms, ranging from the proportion of the farm irrigated to the irrigation system used, and identified areas where improvements to irrigation practices could be made. More than 8 different irrigation systems were used in the region, and flood irrigation was the most commonly used. However, a large proportion (37%) of flood irrigators were contemplating changing to spray irrigation, mostly to long lateral hand move sprinkler irrigation, in an effort to improve water use efficiency. More than 50% of respondents did not meter irrigation water use, and 83% pumped water directly from rivers or creeks, with dams and dragline holes the next most common sources. Irrigation scheduling (when to start irrigating and the frequency of irrigation thereafter) and the amount of water to apply were generally based on knowledge and experience rather than on soil moisture monitoring equipment or use of evaporation rates. Most survey respondents recognised that their irrigation practices could improve and said that they would be interested in information to help them make more informed decisions about irrigation practices.
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Kennedy, John. "Crossing Borders in the Insular Middle Ages ed. by Aisling Byrne and Victoria Flood." Parergon 37, no. 2 (2020): 189–90. http://dx.doi.org/10.1353/pgn.2020.0077.
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Reece, R., V. Beddome, and D. Barr. "Diseases diagnosed in broiler chicken flocks in Victoria, Australia, 1977 to 1984." Veterinary Record 116, no. 12 (March 23, 1985): 315–20. http://dx.doi.org/10.1136/vr.116.12.315.
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Paton-Cole, V., R. H. Crawford, R. Turnbull, E. Fitzgerald, A. Michalewicz, and J. Garber. "Trends in Residential Building Materials in the State of Victoria." IOP Conference Series: Earth and Environmental Science 1101, no. 4 (November 1, 2022): 042022. http://dx.doi.org/10.1088/1755-1315/1101/4/042022.
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Abstract As the population in Victoria continues to grow, there has been a corresponding increase in building approvals across the State. Houses characterised as low-rise residential buildings often take the largest share of these approvals, with incessant residential building activities being driven by record low interest rates. Low-rise residential buildings comprise various building forms that use a number of specified construction materials to construct the building envelope and other structural and non-structural elements. As materials used for constructing residential building envelopes continue to evolve, these materials must be fit for purpose, and satisfy design criteria and performance requirements, while being aesthetically pleasing. This research analyses the trend in construction materials used in building envelopes of low-rise residential buildings using data from building permits issued between 1996 to 2019. The trend analysis shows that traditional double brick wall systems and suspended timber floors have reduced in popularity for houses built in the 21st century. The analysis also shows that brick veneer wall cladding systems built over slab-on-ground footings is the dominant construction form while the roof cladding material is influenced by geographical location. Insights from the data analysis indicate very little innovation has emerged in materials for residential building envelopes despite its crucial role in providing thermal comfort for inhabitants. Results from this research will serve as a basis to provide quantitative assessment of the trend in materials resource; provide insights about the impact of new building envelope products on existing industries; and perspectives on materials for future building envelopes.
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Shen, Yangshuo, Boen Zhang, Cheuk Ying Chue, and Shuo Wang. "Improving Risk Projection and Mapping of Coastal Flood Hazards Caused by Typhoon-Induced Storm Surges and Extreme Sea Levels." Atmosphere 14, no. 1 (December 27, 2022): 52. http://dx.doi.org/10.3390/atmos14010052.
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Seawater inundation mapping plays a crucial role in climate change adaptation and flooding risk reduction for coastal low-lying areas. This study presents a new elevation model called the digital impermeable surface model (DISM) based on the topographical data acquired by unmanned aerial vehicle (UAVs) for improving seawater inundation mapping. The proposed DISM model, along with the bathtub model, was used to assess coastal vulnerability to flooding in significant tropical cyclone events in a low-lying region of Victoria Harbor in Hong Kong. The inundation simulations were evaluated based on the typhoon news and reports which indicated the actual storm surge flooding conditions. Our findings revealed that the proposed DISM obtains a higher accuracy than the existing digital elevation model (DEM) and the digital surface model (DSM) with a RMSE of 0.035 m. The DISM demonstrated a higher skill than the DEM and the DSM by better accounting for the water-repellent functionality of each geospatial feature and the water inflow under real-life conditions. The inundation simulations affirmed that at least 88.3% of the inundated areas could be recognized successfully in this newly-designed model. Our findings also revealed that accelerating sea level rise in Victoria Harbor may pose a flooding threat comparable to those induced by super typhoons by the end of the 21st century under two representative emission scenarios (RCP4.5 and RCP8.5). The seawater may overtop the existing protective measures and facilities, making it susceptible to flood-related hazards.
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Margrath, RD, and a. Lill. "Age-related Differences in Behaviour and Ecology of Crimson Rosellas, Platycercus elegans, during the Non-Breeding Season." Wildlife Research 12, no. 2 (1985): 299. http://dx.doi.org/10.1071/wr9850299.
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Habitat use, diet and behaviour of adult and immature crimson rosellas were compared in the non-breeding season in a wet sclerophyll forest in southern Victoria. Immature birds occurred mainly at forest edges and were more patchily distributed than adults. They also differed quantitatively in their diet, spent more time feeding and less time resting, and occurred in larger flocks than adults. It is suggested that these dietary and behavioural differences probably result from either enforced use of inferior habitats and food resources, or less efficient foraging.
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Cannadine, David. "From biography to history: writing the modern British monarchy." Historical Research 77, no. 197 (July 1, 2004): 289–312. http://dx.doi.org/10.1111/j.1468-2281.2004.00211.x.
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Abstract This article traces the development of biographical and historical writing about the British monarchy from the ‘golden age’ of Elizabeth I to the House of Windsor. It examines the differences in approach over the past two centuries, in particular, from the uncritical biographies of the Victorian period to the current unregulated flood of material, authorized and unauthorized. Such an analysis goes beyond the history of dynasties and individuals and becomes a history of society as reflected in the changing experiences of the British royal family.
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Kipkemboi, J., C. M. Kilonzi, A. A. van Dam, N. Kitaka, J. M. Mathooko, and P. Denny. "Enhancing the fish production potential of Lake Victoria papyrus wetlands, Kenya, using seasonal flood-dependent ponds." Wetlands Ecology and Management 18, no. 4 (April 3, 2010): 471–83. http://dx.doi.org/10.1007/s11273-010-9180-4.
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Chessman, BC. "Habitat Preferences of Fresh-Water Turtles in the Murray Valley, Victoria and New-South-Wales." Wildlife Research 15, no. 5 (1988): 485. http://dx.doi.org/10.1071/wr9880485.
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Preferences of Chelodina expansa, Chelodina longicollis and Emydura macquarii (Testudines : Chelidae) for different types of aquatic habitat on the Murray River flood plain in south-eastern Australia were inferred from catch statistics. E. macquarii was the species most often caught in the river itself and river backwaters, whereas C. longicollis formed the majority of captures from oxbow lakes, anabranches, ponds, rain pools and a swamp. Relative abundance of E. macquarii was significantly positively correlated with water body depth, transparency, persistence during dry conditions and flow speed, and negatively correlated with remoteness from the river. C. longicollis demonstrated the opposite pattern, and the proportional catch of C. expansa was weakly correlated with environmental variables. The capacity of C. longicollis for colonising and surviving in small, remote and ephemeral ponds and pools relates to its ability to aestivate and resist desiccation and its propensity for overland migration.
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authors, Various. "Book reviews." Notes and Records of the Royal Society of London 58, no. 3 (September 22, 2004): 311–20. http://dx.doi.org/10.1098/rsnr.2004.0059.
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Six book reviews in the September 2004 issue of Notes and Records: M. Campbell–Kelly, M. Croarken, R. Flood and E. Robson (eds), The history of mathematical tables: from Sumer to spreadsheets . Kevin C. Knox and Richard Noakes (eds), From Newton to Hawking: a history of Cambridge University's Lucasian professors of mathematics . Patricia Fara, Pandora's breeches: women, science and power in the enlightenment . Maurice Crosland, Gay Lussac: scientist and bourgeois . John van Wyhe, Phrenology and the origins of Victorian scientific naturalism . Donald Cardwell, The development of science and technology in nineteenth–century Britain: the importance of Manchester (Edited by Richard L. Hills).
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Swamikannu, X., D. Radulescu, R. Young, and R. Allison. "A comparative analysis: storm water pollution policy in California, USA and Victoria, Australia." Water Science and Technology 47, no. 7-8 (April 1, 2003): 311–17. http://dx.doi.org/10.2166/wst.2003.0704.
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Urban drainage systems historically were developed on principles of hydraulic capacity for the transport of storm water to reduce the risk of flooding. However, with urbanization the percent of impervious surfaces increases dramatically resulting in increased flood volumes, peak discharge rates, velocities and duration, and a significant increase in pollutant loads. Storm water and urban runoff are the leading causes of the impairment of receiving waters and their beneficial uses in Australia and the United States today. Strict environmental and technology controls on wastewater treatment facilities and industry for more than three decades have ensured that these sources are less significant today as the cause of impairment of receiving waters. This paper compares the approach undertaken by the Environmental Protection Authority Victoria for the Melbourne metropolitan area with the approach implemented by the California Environmental Protection Agency for the Los Angeles area to control storm water pollution. Both these communities are largely similar in population size and the extent of urbanization. The authors present an analysis of the different approaches contrasting Australia with the USA, comment on their comparative success, and discuss the relevance of the two experiences for developed and developing nations in the context of environmental policy making to control storm water and urban runoff pollution.
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Ewen, Shane. "Socio-technological disasters and engineering expertise in Victorian Britain: the Holmfirth and Sheffield floods of 1852 and 1864." Journal of Historical Geography 46 (October 2014): 13–25. http://dx.doi.org/10.1016/j.jhg.2014.05.021.
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Bedard, J. H., H. R. Naslund, P. Nabelek, A. Winpenny, M. Hryciuk, W. Macdonald, B. Hayes, et al. "Fault-mediated melt ascent in a Neoproterozoic continental flood basalt province, the Franklin sills, Victoria Island, Canada." Geological Society of America Bulletin 124, no. 5-6 (February 6, 2012): 723–36. http://dx.doi.org/10.1130/b30450.1.
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Shirley, Victoria. "VICTORIA FLOOD. Prophecy, Politics and Place in Medieval England: From Geoffrey of Monmouth to Thomas of Erceldoune." Review of English Studies 69, no. 289 (August 10, 2017): 372–74. http://dx.doi.org/10.1093/res/hgx094.
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Beard, Charles D., James S. Scoates, Dominique Weis, Jean H. Bédard, and Trent A. Dell’Oro. "Geochemistry and Origin of the Neoproterozoic Natkusiak Flood Basalts and Related Franklin Sills, Victoria Island, Arctic Canada." Journal of Petrology 58, no. 11 (November 1, 2017): 2191–220. http://dx.doi.org/10.1093/petrology/egy004.
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