Готові списки джерел за темами / Mound springs

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Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Mound springs"

1

Harris, CR. "Mound Springs: South Australian Conservation Initiatives." Rangeland Journal 14, no. 2 (1992): 157. http://dx.doi.org/10.1071/rj9920157.

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The mound springs of inland Australia are of outstanding scientific and cultural importance. Natural outlets for the waters of the Great Artesian Basin, they are found mostly on or near its margins. The most numerous and active are in the far north of South Australia. Parts of westem Queensland still have active springs, but almost all in north-westem New South Wales are now extinct, presumably because of aquifer draw-down in the wake of bore sinking. As permanent sources of potable water in a desert environment they have been a focus for human activity over many years. Aboriginal occupation has been documented to at least 5000 years BP and almost all the springs are rich in archaeological material and mythological associations. Since European settlement they have been of strategic importance in exploration and in the location of pastoral stations, the Overland Telegraph and the old Ghan narrow gauge railway from Marree to Oodnadatta. Biologically, they represent unusually specialised aquatic habitats, the discontinuity being analogous to islands and the isolation just as great for species with limited dispersal abilities. The result is an assemblage of plants and animals of evolutionary, biogeographic and ecological interest, with many endemic and relict species. Heavily degraded by aquifer draw-down and over a century of pastoralism, the springs were given little attention until relatively recently. In the past decade two key areas have been acquired for the national parks system and ten important springs on pastoral country outside of the parks have been fenced. Important research has also been carried out, with a particular focus on the endemic elements of the invertebrate fauna. These are positive achievements, but the remoteness of the localities where the springs occur presents a continuing difficulty for on-going conservation and management programs.
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2

TANG, DANNY, and BRENTON KNOTT. "Freshwater cyclopoids and harpacticoids (Crustacea: Copepoda) from the Gnangara Mound region of Western Australia." Zootaxa 2029, no. 1 (March 6, 2009): 1–70. http://dx.doi.org/10.11646/zootaxa.2029.1.1.

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The Gnangara Mound is a 2,200 km 2 unconfined aquifer located in the Swan Coastal Plain of Western Australia. This aquifer is one of the most important ground water resources for the Perth Region and supports a number of groundwaterdependent ecosystems, such as the springs of Ellen Brook and root mat communities of the Yanchep Caves. Although freshwater copepods have been documented previously from those caves and springs, their specific identity were hitherto unknown. The current work formally identifies copepod samples collected from 23 sites (12 cave, three bore, five spring and three surface water localities) within the Gnangara Mound region. Fifteen species were documented in this study: the cyclopoids Australoeucyclops sp., Eucyclops edytae sp. nov., Macrocyclops albidus (Jurine, 1820), Mesocyclops brooksi Pesce, De Laurentiis & Humphreys, 1996, Metacyclops arnaudi (G. O. Sars, 1908), Mixocyclops mortoni sp. nov., Paracyclops chiltoni (Thomson, 1882), Paracyclops intermedius sp. nov. and Tropocyclops confinis (Kiefer, 1930), and the harpacticoids Attheyella (Chappuisiella) hirsuta Chappuis, 1951, Australocamptus hamondi Karanovic, 2004, Elaphoidella bidens (Schmeil, 1894), Kinnecaris eberhardi (Karanovic, 2005), Nitocra lacustris pacifica Yeatman, 1983 and Paranitocrella bastiani gen. et sp. nov. Tropocyclops confinis is recorded from Australia for the first time and A. (Ch.) hirsuta and E. bidens are newly recorded for Western Australia. The only copepod taxa endemic to the Gnangara Mound region are E. edytae sp. nov. (occurs primarily in springs and rarely in the Yanchep National Park Caves) and P. bastiani gen. et sp. nov. (confined to the Yanchep National Park Caves containing tuart root mats). Paracyclops chiltoni was the most common species, whilst T. confinis and N. l. pacifica were rarely encountered. Metacyclops arnaudi was the only taxon absent from ground waters. The copepod fauna recorded in the caves and springs of the Gnangara Mound region are comparable, with respect to species richness, endemicity and the varying degrees of dependency on ground water, to those reported from similar habitats in South Australia and Western Australia. Restoring the root mats and maintaining permanent water flow within the Yanchep Caves, as well as minimising urban development near the Ellen Brook Springs, are essential to protect the copepod species, particularly the endemic P. bastiani gen. et sp. nov. and E. edytae sp. nov., inhabiting these unique ground water environments.
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3

Rutherford, Jasmine, Tania Ibrahimi, Tim Munday, Adrienne Markey, Andrea Viezzoli, Arianna Rapiti, and Rod Paterson. "An Assessment of Water Sources for Heritage Listed Organic Mound Springs in NW Australia Using Airborne Geophysical (Electromagnetics and Magnetics) and Satellite Remote Sensing Methods." Remote Sensing 13, no. 7 (March 28, 2021): 1288. http://dx.doi.org/10.3390/rs13071288.

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Discrete phreatophytic vegetation associated with organic mound springs is present in several places in the semi-arid Walyarta Conservation Park (Park) in northern Western Australia. The mound springs are heritage listed, having significant cultural and environmental significance. Increased industrial (mining and agriculture) development in the region, coupled with a growing demand for groundwater to support these developments, requires an enhanced understanding of how the springs operate and the source of water that sustains their presence. The springs are broadly believed to be situated on geological faults and receive groundwater from artesian sources. However, their association with deeper geological structures and aquifer systems, the focus of this study, is not well understood. This study employed regional- and finer-scale airborne geophysical data, including electromagnetics (AEM) and magnetics, to constrain the sub-basin-scale hydrogeology of the West Canning Basin in Western Australia and to detail tectonic deformation, sedimentological and hydrological processes. The AEM data were inverted using 1- and 2D methods to better define structural discontinuities in the Park, and the results identified the location of faults and other geological structures that were coincident with spring locations. A complementary analysis of spatiotemporal patterns of green vegetation was undertaken using remote sensing data. A model for the extent of green vegetation (in percent), calculated using a constrained linear spectral unmixing algorithm and applied to a select Landsat Thematic Mapper ™ image archive, showed the persistence of green vegetation aligned with interpreted fault systems through extended dry periods. These geophysical and remotely sensed datasets demonstrate that in the Park, the sedimentary aquifers and landscapes are highly compartmentalized and that this constrains aquifer distribution, groundwater quality and the location of wetlands and phreatophytic vegetation. Integrating key information from these datasets allows for the construction of a three-dimensional model that predicts the nature and extent of the critical zone which sustains perennial groundwater discharge within mound springs, drainages and wetlands and provides a framework to assess discharge rates, mixing and, ultimately, sensitivity to changed water availability.
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4

Saruwatari, Kazuko, Yukihiro Mizuochi, Yasunori Mahara, Teruyoshi Hatano, Takuma Hasegawa, Hirohisa Kobayashi, Atsushi Ninomiya, et al. "The Great Artesian Basin and the Limestone Mound Springs, Australia." Journal of the Geological Society of Japan 110, no. 4 (2004): VII—VIII. http://dx.doi.org/10.5575/geosoc.110.4.vii_viii.

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5

Leary, Jim, Matthew Canti, David Field, Peter Fowler, Peter Marshall, and Gill Campbell. "The Marlborough Mound, Wiltshire. A Further Neolithic Monumental Mound by the River Kennet." Proceedings of the Prehistoric Society 79 (May 10, 2013): 137–63. http://dx.doi.org/10.1017/ppr.2013.6.

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Recent radiocarbon dates obtained from two soil cores taken through the Marlborough Castle mound, Wiltshire, show the main body of it to be a contemporaneous monument to Silbury Hill, dating to the second half of the 3rd millennium cal bc. In light of these dates, this paper considers the sequence identified within the cores, which includes two possible flood events early in the construction of the mound. It also describes four cores taken through the surrounding ditch, as well as small-scale work to the north-east of the mound. The topographic location of the mound in a low-lying area and close to rivers and springs is discussed, and the potential for Late Neolithic sites nearby is set out, with the land to the south of the mound identified as an area for future research. The paper ends with the prospect that other apparent mottes in Wiltshire and beyond may well also have prehistoric origins
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6

Noble, JC, MA Habermehl, CD James, J. Landsberg, AC Langston, and SR Morton. "Biodiversity implications of water management in the Great Artesian Basin." Rangeland Journal 20, no. 2 (1998): 275. http://dx.doi.org/10.1071/rj9980275.

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The Great Artesian Basin (GAB) underlies a vast, mainly arid, region where most of the indigenous biota are not dependent upon surface water. In contrast, an important minority is dependent on refuges such as mound springs and their associated wetlands. In some parts of the GAB, such as western New South Wales, many springs have either ceased to flow, or are now barely detectable, because the proliferation of artesian waterbores has reduced groundwater pressures. Because of the rarity of species endemic to mound springs, and the damage they have suffered since pastoral settlement, emphasis should be directed towards conservation and possible rejuvenation of these ecosystems. Provision of artificial sources of water allows more widespread grazing by livestock, larger native and feral herbivores, thereby posing threats to native plants and animals that do not use the water. Because of the proliferation of artificial waters and the grazing they allow, terrestrial grazing-sensitive species now appear to be confined to tiny patches in the landscape. Some nature reserves within the GAB retain numerous artificial sources of water. Most of these should be closed over time to reduce negative impacts on grazing-sensitive plants and animals, especially where these species are inadequately protected elsewhere. In those regions where the ratio of artificial to natural waters is still low, consideration should be given to balancing provision of water for livestock with conservation of biological diversity, by maintaining a patchwork of areas remote from water. In regions where the density of artificial waters is high, conservation of biodiversity on freehold and leasehold lands might be enhanced with a mix of approaches accommodating the needs of the biota and the aspirations of landholders, tailored according to land type and condition. Key words: Great Artesian Basin, biological diversity, mound springs, refuges, rare biota, grazing impact, conservation management, groundwater.
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7

Fensham, R. J., R. J. Fairfax, D. Pocknee, and J. Kelley. "Vegetation patterns in permanent spring wetlands in arid Australia." Australian Journal of Botany 52, no. 6 (2004): 719. http://dx.doi.org/10.1071/bt04043.

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A transect-based quadrat survey was conducted within 11 spring wetlands fed by permanent groundwater flows from the Great Artesian Basin at Elizabeth Springs in western Queensland. Flow patterns within individual wetlands change with sedimentation associated with mound building, siltation of abandoned drains and changes in aquifer pressure associated with artificial extraction from bores. The pattern of floristic groups for the wetland quadrats was poorly related to soil texture, water pH, slope and topographic position. Patterns were most clearly related to wetland age as determined from aerial photography, with a clear successional sequence from mono-specific stands of Cyperus laevigatus on newly formed wetland areas to more diverse wetland assemblages. However, evidence from other Great Artesian Basin springs suggests that succession can also result in reduced species richness where the palatable tall reed Phragmites australis develops mono-specific stands.
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8

Longman, Mark, and Stephen Cumella. "Revisiting the Eland Field Lodgepole Mound Complex (Stark County, North Dakota) Twenty Years after its Discovery." Mountain Geologist 53, no. 1 (January 2016): 29–70. http://dx.doi.org/10.31582/rmag.mg.53.1.29.

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Eland Field, the most prolific Lower Mississippian Lodgepole mound complex found to date in the Williston Basin, covers an area of about 6 mi2 and has produced more than 29 MMBO from 16 wells in the 20 years since the field was discovered. Three of the field’s updip wells have each produced more than 4 MMBO from mounds more than 250 ft thick although generally only the top 20 to 30 ft of the mound is perforated. The lower Lodgepole reservoir rocks are commonly called Waulsortian mounds, but they are Waulsortian in age only and not the micrite-rich mudmounds found in the type area of Waulsort, Belgium. Instead of being mudmounds, they are composed mainly of marine-cemented microbial boundstones and skeletal grainstones with local stromatactis structures. The edges of the mounds dip as steeply as 40 to 60 degrees. Such steep dips would be impossible in a typical micrite-rich Waulsortian mound. In addition to the abundant microbial and marine cementation that lithified the Eland Field mound complex penecontemporaneously, organisms such as stalked crinoids, fenestrate bryozoans, and articulated brachiopods and ostracods thrived on the hard substrate provided by the mounds. However, these organisms were themselves incapable of forming a true reef framework. Unusual inward dip of the Upper Bakken black shale and significant thickening of the “Extra Bakken Shale” from zero up to about 40 ft immediately beneath the oil-producing lower Lodgepole mounds both support the idea that something structurally significant such as salt dissolution helped localize mound development. We conclude that dissolution of the Lower Devonian Prairie salt created a fracture network during and immediately after deposition of the upper Bakken black shale that allowed compaction-water expulsion-vents and/or warm springs to initiate formation of carbonate “towers” that localized formation of the Lodgepole mounds. The discovery well for Eland Field, the Knopik #1-11 (NW NW Sec. 11, T139N, R97W), was completed in January 1995 for 2707 BOPD and 1550 MCFGPD with no water. The field was developed over the next few years with up to 16 producing wells and 7 water injection wells. Waterflooding of Eland Field began in 1997 and climbed to over 500,000 barrels per month in just two months. Through September 2015, more than 95 MMBW had been injected into the field, but it has produced over 29.6 MMBO, doubling the 1996 estimated ultimate recovery of 12 to 15 MMBO. The field continues to produce with about a 5.5% oil cut. In terms of total cumulative oil production in the U.S. portion of the Williston Basin, Eland Field contains 3 of the top 10 wells, and other nearby Lodgepole producing fields contain 4 additional top 10 wells. This excellent oil production leads to the question: Is it possible that the only productive Lodgepole mound reservoirs in the Williston Basin, eight of which have been discovered to date (with all but one discovered in the mid-1990s) are limited to a small atoll-like area about 7 miles in diameter in northern Stark County, North Dakota? Certainly the presence of similar Lodgepole mounds in outcrops in central Montana (e.g., Bridger Range and Big Snowy and Little Belt mountains) and in the subsurface of the western Williston Basin suggests that other Lodgepole mound-type reservoirs could occur across much of the basin. The most promising areas in which to search for other Lodgepole mound reservoirs will be those where the Upper Bakken black shale is well developed and thermally mature because it is the source for the oil in the Lodgepole reservoirs in the Eland Field area.
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9

Chafetz, Henry S., and Sean A. Guidry. "Deposition and diagenesis of Mammoth Hot Springs travertine, Yellowstone National Park, Wyoming, U.S.A." Canadian Journal of Earth Sciences 40, no. 11 (November 1, 2003): 1515–29. http://dx.doi.org/10.1139/e03-051.

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Strata forming a 113 m long core through Mammoth Hot Springs record the Holocene evolution of this travertine accumulation from deposition as part of a lacustrine to a terraced mound environment. The deposit is readily divided into four intervals: 113–67 m, carbonate-cemented volcaniclastic with intercalated layers of travertine; 67–60 m, moderately pure travertine with some volcaniclastics; 60–50 m, carbonate-cemented volcaniclastic-rich interval; and 50–0 m, essentially pure travertine. Lithologic composition, sedimentary structures, and the rare ostracode fossils indicate that the lower 67 m predominantly accumulated in a lacustrine environment, whereas the upper 40 m are terraced mound deposits. All of the travertine is calcite, some after aragonite. Layers of shrubs, oncoids, and peloids, all bacterial in origin, form the dominant allochems within the travertine. Stable isotopic carbon and oxygen values (n = 128) are strongly positively correlated and decrease up-core ~4‰ and 8‰, respectively, reflecting a change in depositional environment from lacustrine to terraced mound upsection. Other stable isotopic trends indicate a pronounced difference between travertine allochems and immediately adjacent spar, e.g., spar averages 0.9‰ and 0.6‰, respectively, lower than immediately adjacent shrubs (n = 7 pairs). This difference is interpreted to reflect degassing and evaporation in the surface waters prior to precipitation of the allochems. The trends in stable isotopic values provide valuable corroborative data with regard to the depositional environment and diagenesis of the travertine.
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10

Guidry, Sean A., and Henry S. Chafetz. "Siliceous shrubs in hot springs from Yellowstone National Park, Wyoming, U.S.A." Canadian Journal of Earth Sciences 40, no. 11 (November 1, 2003): 1571–83. http://dx.doi.org/10.1139/e03-069.

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Many of the siliceous hot springs in Yellowstone National Park contain subaqueous, spinose siliceous precipitates up to 5 cm high that occupy shallow terracettes in siliceous terraced mound accumulations, discharge channels, etc. These siliceous "shrubs" are composed of opal-A with an arborescent or branching pattern and have strong morphological similarities to bacterial shrubs from carbonate-precipitating hot springs. Siliceous shrubs constitute a major precipitate style associated with discharge channel – flow-path facies throughout most of the 20 m of flow path at Cistern Spring, Norris Geyser Basin. They are found in siliceous spring waters ranging in temperature from 76.4 to 16.2 °C and pH from 6.0 to 7.4. At every scale, siliceous shrubs contain abundant evidence of microbial life in the form of bacterial body fossils and extracellular polymeric substances. The presence of relict organic constituents and bacterial morphological fossils indicates that the shrub fabric and architecture are dominated by bacteria, i.e., there is potentially a strong biotic effect on the precipitation process. Precipitation of opal in siliceous shrubs is very likely the result of either active bacterially induced precipitation or passive mediation through organic templates. On a larger scale, siliceous shrubs contain abundant evidence of former microbial activity in hot springs, thus they are good microbial biomarkers.
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Більше джерел

Дисертації з теми "Mound springs"

1

McMahon, Camille Annette. "Dalhousie Mound Springs : a visitor profile and the implications for management /." Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09ENV/09envm167.pdf.

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2

Frashuer, Anya C. "Middle Woodland Mound Distribution and Ceremonialism in the Apalachicola Valley, Northwest Florida." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001504.

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3

Smith, Andrea B. "Geology of the Yudnamutana Gorge, Paralana Hot Springs area and genesis of mineralization at the Hodgkinson prospect, Mount Painter Province, South Australia /." Adelaide, 1992. http://web4.library.adelaide.edu.au/theses/09SB/09sbs642.pdf.

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Thesis (B. Sc.(Hons.))--University of Adelaide, Dept. of Geology and Geophysics, 1992.
Two coloured folded maps in pocket inside back cover. "National grid reference (S1-54) 6737-1." Includes bibliographical references (leaves [8-10]).
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4

Chadbourn, Kayte A. "A historical comparative analysis of the Norway and Maine State Buildings from the 1893 Columbian Exposition." Muncie, Ind. : Ball State University, 2009. http://cardinalscholar.bsu.edu/642.

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5

Stoate, K. M. "The mound springs of South Australia: their electromagnetic signature and fractal dimension." Thesis, 2011. http://hdl.handle.net/2440/97933.

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The importance of groundwater to remote and regional Australia cannot be understated, due to the intermittent and unreliable rainfall in these areas, as well as the unreliability of other water sources. As such the major source of water is groundwater from the Great Artesian Basin (GAB). The natural discharge of the GAB is through mound springs, unique landforms comprised of precipitated carbonates that are primarily located along the south western edge of the GAB. Due to the cultural, economic and environmental significance of these features it is important to fully understand their underlying hydrogeological structure. Geophysical studies have the potential to provide non-invasive imaging of these specific aspects of the GAB. A number of different methods were used to collect data from the springs. For this particular study a set of shallow electromagnetic data was collected. These data were processed conventionally, however to provide additional information they were also processed to extract the fractal dimension information of the data. The fractal dimension is used here as an indicator of roughness or texture with a dataset, thus differentiating between a homogenous and heterogeneous earth. All of the data were compared, including conductivity, in-phase, fractal dimension and the regolith of the area. It was hoped that this would provide added depth to the understanding of the mound springs as well as trialling an alternate method of processing data. Although the data collected did show some correlations, especially in regards to the relationships between the conductivity and the EM signature of the mound springs, there was a lack of consistent correlation between the fractal dimension and the other data sets that did not allow for conclusions as to the usefulness of fractal dimension as a means of processing data. This may be due to the small survey size of the area, thus testing on larger areas may be worthwhile in the future.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 2011
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6

Lampe, R. J. "Monitoring groundwater flow using electrokinetics." Thesis, 2011. http://hdl.handle.net/2440/96682.

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Very little is known about the groundwater flow paths from the subsurface of the Great Artesian Basin to the surface basins throughout the Australian continent. The Wabma Kadarbu Mound Springs in northern South Australia lie at the south-west margin of the Great Artesian Basin and contain a number of springs that continually discharge groundwater over time. This work deals with the self potential (SP) method which was used along three intersecting lines in the area to help gain a better understanding of groundwater flow. The SP method responds to the electrokinetic phenomenon of streaming potential which can be applied to hydrogeological investigations to help evaluate the subsurface groundwater flow conditions. Because the SP data do not intrinsically yield a good indication of the depth of the sources generating groundwater flow, numerical models are developed to assess the SP distribution resulting from subsurface fluid flow. The self-potential associated with groundwater flow in an electrolytic environment is modelled by assuming a primary source as an electric double layer between the flowing groundwater and the porous media created by the flowing SP currents. This primary flow generates the secondary surface charge and double layers on the interfaces between media with different conductivities. The geometry of the sources is obtained from an image reconstruction technique which determines the spatial locations of SP sources. The modelling and image reconstructions help to obtain a better understanding of these flow paths and how they make their way to the surface can give a greater chance of collecting the groundwater to use to good effect. The results showed evidence for groundwater flow networks in the subsurface of the Wabma Kadarbu springs. The groundwater flow networks for all three lines had similar characteristics including having individual columns connected at depth and large widths for the columns. This research showed that SP can be used to help better understand groundwater flow patterns in the subsurface.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 2011
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7

Ho, Jui-Chen, and 賀瑞琛. "Nonlinear Structure Analysis and Application of the Transverse Coil Spring Type Shock Mount." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/89380271637429605628.

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8

Azadi, Sohi Mojtaba. "Kinematically singular pre-stressed mechanisms as new semi-active variable stiffness springs for vibration isolation." Phd thesis, 2010. http://hdl.handle.net/10048/1490.

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Researchers have offered a variety of solutions for overcoming the old and challenging problem of undesired vibrations. The optimum vibration-control solution that can be a passive, semi-active or active solution, is chosen based on the desired level of vibration-control, the budget and the nature of the vibration source. Mechanical vibration-control systems, which work based on variable stiffness control, are categorized as semi-active solutions. They are advantageous for applications with multiple excitation frequencies, such as seismic applications. The available mechanical variable stiffness systems that are used for vibration-control, however, are slow and usually big, and their slowness and size have limited their application. A new semi-active variable stiffness solution is introduced and developed in this thesis to address these challenges by providing a faster vibration-control system with a feasible size. The new solution proposed in this thesis is a semi-active variable stiffness mount/isolator called the antagonistic Variable Stiffness Mount (VSM), which uses a variable stiffness spring called the Antagonistic Variable stiffness Spring (AVS). The AVS is a kinematically singular prestressable mechanism. Its stiffness can be changed by controlling the prestress of the mechanisms links. The AVS provides additional stiffness for a VSM when such stiffness is needed and remains inactive when it is not needed. The damping of the VSM is constant and an additional constant stiffness in the VSM supports the deadweight. Two cable-mechanisms - kinematically singular cable-driven mechanisms and Prism Tensegrities - are developed as AVSs in this thesis. Their optimal configurations are identified and a general formulation for their prestress stiffness is provided by using the notion of infinitesimal mechanism. The feasibility and practicality of the AVS and VSM are demonstrated through a case study of a typical engine mount by simulation of the mathematical models and by extensive experimental analysis. A VSM with an adjustable design, a piezo-actuation mechanism and a simple on-off controller is fabricated and tested for performance evaluation. The performance is measured based on four criteria: (1) how much the VSM controls the displacement near the resonance, (2) how well the VSM isolates the vibration at high frequencies, (3) how well the VSM controls the motion caused by shock, and (4) how fast the VSM reacts to control the vibration. For this evaluation, first the stiffness of the VSM was characterized through static and dynamic tests. Then performance of the VSM was evaluated and compared with an equivalent passive mount in two main areas of transmissibility and shock absorption. The response time of the VSM is also measured in a realistic scenario.
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9

Pointon, V. J. "Structure and thermochronology of an E-W profile through the Mount Painter Province, Northern Flinders Ranges, South Australia: is this a southern example of deformation and exhumation driven by the Alice Springs Orogeny?" Thesis, 2010. http://hdl.handle.net/2440/88635.

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The Mount Painter Province in the Northern Flinders Ranges, South Australia is composed of Palaeoproterozoic to Mesoproterozoic basement overlain by 7-12 kilometres of Neoproterozoic to Cambrian sedimentary rocks and is associated with high lateral geothermal gradients. During the Early Paleozoic, deformation and metamorphism reached greenschist to amphibolite facies during the ~500 Ma Delamerian Orogeny. This study focuses on the subsequent thermal history of the area by studying an E-W profile through the Mount Painter Province using the widely used techniques of structural mapping, micro-structural analysis and 40Ar/39Ar thermochronology to characterise and date deformation and cooling (as a proxy for exhumation). The E-W trending profile, known as the Hamilton Fault, is south dipping oblique slip with a normal and dextral component overprinted by younger brittle structures and brecciation which is seen in the structural and micro-structural analysis.. It is proposed to have a very active past and there is evidence of movement in the Adelaidean due to an apparent formation offset of ~600 m. The regional context of the Hamilton Fault having a dextral and normal component suggests an ε3 uplift, an ε2 extension SW to NE and ε1 NW-SE shortening. This is similar in character to the N-S shortening which is seen in the Alice Springs Orogeny (ASO). Results from the 40Ar/39Ar thermochronology show the basement metasedimentary rocks have cooling ages of around ~350 Ma between 300 to 400 °C and 312 Ma at 150 °C. Interestingly, the younger Adelaidean metasedimentary rocks have an older cooling age of 390 Ma between 300 to 400 °C. The thermochronology data suggests differential cooling has occurred. The observations suggest that exhumation is driven following the Delamerian folding event and forced the earlier cooling of shallower samples at a slower rate and later cooling of the deeper samples at a faster rate, a process caused by differential tilting. The cooling paths are well represented in this example as shown by converging cooling paths. Overall I attribute this subsequent thermal history and structural similarity to the ASO, a major widespread dramatic orogenic event which has not been widely recognized as a significant tectonic event in the Adelaide Fold Belt.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Earth and Environmental Sciences, 2010
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Книги з теми "Mound springs"

1

Emerson, Eric. SBM fire: Past & present. Edited by McCalley Michael and Spring Lake Park-Blaine-Mounds View Fire Dept. Spring Lake Park, Minn: Spring Lake Park-Blaine-Mounds View Fire Department, 1994.

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2

Teter, John E. A discussion of zero spring rate mechanisms used for the active isolation mount experiment. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1999.

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3

Anthony, Bryer, and Cunningham Mary, eds. Mount Athos and Byzantine monasticism: Papers from the Twenty-eighth Spring Symposium of Byzantine Studies, Birmingham, March 1994. Aldershot, Great Britain: Variorum, 1996.

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4

Purkey, Becky Weimer. Geologic roadlogs: Reno-Steamboat Springs, Steamboat-Virginia City-Carson City-Steamboat, Steamboat-Carson City-Carson Valley-Dagget Pass-Lake Tahoe-Mount Rose Summit-Steamboat, Reno-Wadsworth-Pyramid Lake-Reno. Reno: Nevada Bureau of Mines and Geology, University of Nevada Reno, 1987.

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5

E, Sprague Jesse, Durall Roger, United States Forest Service, and Geological Survey (U.S.), eds. Geologic framework, regional aquifer properties (1940s-2009), and spring, creek, and seep properties (2009-10) of the upper San Mateo Creek Basin near Mount Taylor, New Mexico. Reston, Va: U.S. Dept. of the Interior, U.S. Geological Survey, 2012.

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6

Texas School Performance Review (Agency). A report from the Texas School Performance Review: Mount Pleasant Independent School District. Austin, Tex: Texas Comptroller of Public Accounts, 1999.

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7

Texas School Performance Review (Agency). A report from the Texas School Performance Review: Walnut Springs Independent School District. Austin, Tex: Texas Comptroller of Public Accounts, 2003.

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8

Texas School Performance Review (Agency). A report from the Texas School Performance Review: Dripping Springs Independent School District. Austin, Tex: The Review, Texas Comptroller, 2002.

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9

Texas School Performance Review (Agency). A report from the Texas School Performance Review: Progress report, Veribest Independent School District. Austin, Tex: Texas School Performance Review, Texas Comptroller of Public Accounts, 2003.

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Texas School Performance Review (Agency). A report from the Texas School Performance Review: Water Valley Independent School District. Austin, Tex: Texas School Performance Review, Texas Comptroller of Public Accounts, 2001.

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Частини книг з теми "Mound springs"

1

Ponder, W. F. "Mound Springs of the Great Artesian Basin." In Limnology in Australia, 403–20. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4820-4_25.

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2

Yagi, Atsushi. "Termite Mound Building Model." In Springer Monographs in Mathematics, 445–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04631-5_13.

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3

Mond, B. "Mond–Weir duality." In Springer Optimization and Its Applications, 157–65. New York, NY: Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-98096-6_8.

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4

Müller, Werner, and Stephan Frings. "Biorhythmik II: Jahres-, Mond-, Gezeitenrhythmen." In Springer-Lehrbuch, 599–609. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00462-9_26.

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5

McMillan, M. E. "Jerusalem: The Temple Mount." In From the First World War to the Arab Spring, 113–27. New York: Palgrave Macmillan US, 2016. http://dx.doi.org/10.1057/9781137522023_14.

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6

Vukašinović, Nikola, and Jože Duhovnik. "From Complex CAD Model to Mould Casts." In Springer Tracts in Mechanical Engineering, 111–33. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-02399-7_5.

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7

Singh, Akshay Pratap, Bharat Ram Meena, and Shekhar Tomar. "Design and Optimization of Isostatic Mount for Space Borne Mirror." In Springer Proceedings in Physics, 277–82. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9259-1_63.

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8

Yang, Xinmin. "Multiobjective Mond-Weir-Type Second-Order Symmetric Duality." In Springer Optimization and Its Applications, 109–20. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1981-5_7.

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9

Streltcov, Mikhail A., Marianna A. Kulkova, and Maria A. Razzak. "Results of Geochemical Research at the Suursuonmäki Early Iron Age Burial Mound." In Springer Proceedings in Earth and Environmental Sciences, 35–43. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-16544-3_5.

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10

Salerno, Adriana, and Leila Schneps. "Mould Theory and the Double Shuffle Lie Algebra Structure." In Springer Proceedings in Mathematics & Statistics, 399–430. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37031-2_15.

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Тези доповідей конференцій з теми "Mound springs"

1

Cron, B., L. J. Crossey, D. E. Nortrup, and K. E. Karlstrom. "Microbial richness and diversity in CO2-rich mound springs of the Tierra Amarilla anticline, New Mexico." In 2010 New Mexico Geological Society Annual Spring Meeting. Socorro, NM: New Mexico Geological Society, 2010. http://dx.doi.org/10.56577/sm-2010.621.

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2

Love, D. W., B. D. Allen, and R. G. Myers. "PRELIMINARY GEOLOGIC MAP OF THE MOUND SPRINGS 7.5 MINUTE QUADRANGLE, LINCOLN, SIERRA, SOCORRO, AND OTERO COUNTIES, NEW MEXICO." In 2007 New Mexico Geological Society Annual Spring Meeting. Socorro, NM: New Mexico Geological Society, 2007. http://dx.doi.org/10.56577/sm-2007.2686.

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3

Crossey, L. J., K. E. Karlstrom, C. G. Takacs-Vesbach, D. L. Hilton, J. Hall, C. N. Dahm, D. L. Newell, and T. F. Fischer. "CO<sub>2</sub> MOUND SPRINGS OF THE WESTERN U.S.: TOWARDS A MODEL FOR CONTINENTAL SMOKERS." In 2007 New Mexico Geological Society Annual Spring Meeting. Socorro, NM: New Mexico Geological Society, 2007. http://dx.doi.org/10.56577/sm-2007.918.

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4

Bu, Wenjun, Lin He, and Shujun Shan. "Attitude Control of Air Spring Mounting System Based on Fuzzy Control." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34913.

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Air spring is a kind of mount with excellent vibration isolation effect and it uses air as its elastic component. But its height is subject to constant change due to air leak or environment temperature and this restricts its engineering application. So some studies on attitude control are carried out, focusing on statically indeterminate and multivariable coupling air spring mounting systems in this paper. The Statically indeterminate problem is transformed through adding the constraint of loading evenness among air springs. After analyzing the model of this controlled object, a new control strategy based on coupling characteristic recognition is presented and combined with fuzzy logic control to realize attitude control of the multivariable coupling system. Finally, a test is conducted to show that the control strategy is feasible and the control system has good static and dynamic properties.
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5

Shahid, Emad, and Al Ferri. "Passive, Transitioning Mounts for Simultaneous Shock and Vibration Isolation." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-71009.

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A design strategy to simultaneously mitigate the effects of both shock and vibration is introduced. The proposed isolation mount is a passive, transitioning mount and consists of sliding friction elements in series connection with springs and dampers. A linear and a displacement dependent viscous damper are considered, while linear, hardening and softening springs, are considered. The isolation mount’s response is determined by numerical simulation. For a single-degree-of-freedom system, the tradeoff curve for a half-sine velocity input is determined, as is the nonlinear transmissibility for harmonic excitation. The method is found to achieve satisfactory isolation against shock events as well as persistent harmonic inputs. The suggested mount configuration was also found to have good performance against a ‘combined’ input with both resonant and transient content.
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6

Xu, Wei, Lin He, and Zhi-Qiang Lv. "Dynamic Analysis of a Pneumatic Mounting System for Marine Propulsion Engines." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34192.

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To reduce the vibration and noise level in ships, marine propulsion engines are conventionally supported by rubber mounts. But the design of a rubber mounting system for medium- and low-speed propulsion engines could be very complicated due to the large stiffness and rubber creep of rubber mounts. Air spring, which is superior in many respects to rubber mount, can be used as the propulsion engine mounting system. The superiority and potential of pneumatic mounting system is discussed in this paper. The pneumatic system’s loading and stiffness characteristics, which are distinct from rubber system, are analyzed. And an optimized air pressure distribution among air springs is given. The system natural frequencies and force transmissibility are calculated based on a fictitious propulsion engine model. The results show that the pneumatic mounting system can effectively attenuate the dynamic force transmitted to the ship floor, and the system characteristics are not apparently affected by the air pressure distribution.
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7

Andou, Hiroaki, Takayuki Koizumi, Nobutaka Tsujiuchi, and Takudou Ohkado. "Dynamic Characteristics of a Mount Combining Viscous Fluid With Air-Spring." In SAE 2007 Noise and Vibration Conference and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2007. http://dx.doi.org/10.4271/2007-01-2360.

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8

Ashrafiuon, Hashem. "Design Optimization of Aircraft Engine-Mount Systems." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0227.

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Abstract Design optimization of aircraft engine-mount systems for vibration isolation is presented. The engine is modeled as a rigid body connected to a flexible base representing the nacelle. The base is modeled with mass and stiffness matrices and structural damping using finite element modeling. The mounts are modeled as three-dimensional springs with hysteresis damping. The objective is to select the stiffness coefficients and orientation angles of the individual mounts to minimize the transmitted forces from the engine to the base. Meanwhile, the mounts have to be stiff enough not allowing engine deflection to exceed its limits under static and low frequency loadings. It is shown that with an optimal system the transmitted forces may be reduced significantly particularly when mount orientation angles are also treated as design variables. The optimization problems are solved using a Constraint Variable Metric approach. The closed form derivatives of the engine vibrational amplitudes with respect to design variables are derived in order to achieve a more effective optimization search technique.
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9

Goff, F., S. A. Kelley, G. R. Osburn, J. R. Lawrence, C. J. Goff, C. Ferguson, W. C. McIntosh, K. Fellah, N. W. Dunbar, and J. A. Wolff. "Evolution of Mount Taylor compsoite volcano, New Mexico (abs.)." In 2010 New Mexico Geological Society Annual Spring Meeting. Socorro, NM: New Mexico Geological Society, 2010. http://dx.doi.org/10.56577/sm-2010.631.

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10

Cheng, James C., and Jialiang Le. "Challenge Face by Truck Frontal Crash Analysis." In ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium collocated with the ASME 1994 Design Technical Conferences. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/cie1994-0450.

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Abstract In the front barrier crash, due to basic structural differences, light truck body-on-frame vehicles behave quite differently man unitized body vehicles. The complexities of the vehicle structure, weight variation of the test condition, and inherent limited crash distance have made CAE analysis a very attractive method to reduce prototype testing and shorten the design cycle time. The deceleration of the vehicle experienced by the occupant, or “crash pulse”, plays a key role in evaluating occupant injury. In order to maximize CAE’s contribution to design, a reasonable prediction of the crash pulse is crucial. For body-on-frame vehicles, body mounts that connect the cab to the chassis have a pronounced effect on the crash pulse. However, the crash characteristic of the body mount is not fully understood. Therefore, a procedure was developed to provide a good estimation of their behavior. This procedure uses a spring-mass model and a finite element model to simulate a frontal barrier crash test. In both models, the body mounts were modeled as nonlinear springs. By correlating the vehicle response at different locations, a reasonable prediction of the body mounts can be obtained. Further design iterations can be performed once the body mounts characteristic is determined.
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Звіти організацій з теми "Mound springs"

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Dodd, Hope, David Peitz, Gareth Rowell, Janice Hinsey, David Bowles, Lloyd Morrison, Michael DeBacker, Jennifer Haack-Gaynor, and Jefrey Williams. Protocol for Monitoring Fish Communities in Small Streams in the Heartland Inventory and Monitoring Network. National Park Service, April 2021. http://dx.doi.org/10.36967/nrr-2284726.

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Fish communities are an important component of aquatic systems and are good bioindicators of ecosystem health. Land use changes in the Midwest have caused sedimentation, erosion, and nutrient loading that degrades and fragments habitat and impairs water quality. Because most small wadeable streams in the Heartland Inventory and Monitoring Network (HTLN) have a relatively small area of their watersheds located within park boundaries, these streams are at risk of degradation due to adjacent land use practices and other anthropogenic disturbances. Shifts in the physical and chemical properties of aquatic systems have a dramatic effect on the biotic community. The federally endangered Topeka shiner (Notropis topeka) and other native fishes have declined in population size due to habitat degradation and fragmentation in Midwest streams. By protecting portions of streams on publicly owned lands, national parks may offer refuges for threatened or endangered species and species of conservation concern, as well as other native species. This protocol describes the background, history, justification, methodology, data analysis and data management for long-term fish community monitoring of wadeable streams within nine HTLN parks: Effigy Mounds National Monument (EFMO), George Washington Carver National Monument (GWCA), Herbert Hoover National Historic Site (HEHO), Homestead National Monument of America (HOME), Hot Springs National Park (HOSP), Pea Ridge National Military Park (PERI), Pipestone National Monument (PIPE), Tallgrass Prairie National Preserve (TAPR), and Wilson's Creek national Battlefield (WICR). The objectives of this protocol are to determine the status and long-term trends in fish richness, diversity, abundance, and community composition in small wadeable streams within these nine parks and correlate the long-term community data to overall water quality and habitat condition (DeBacker et al. 2005).
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2

Geologic map of the Mount Annie NE, Mount Annie, Ramsey Spring, and Mount Annie SE quadrangles, Mineral and Nye counties, Nevada. US Geological Survey, 1986. http://dx.doi.org/10.3133/i1579.

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Geologic map of the Mound Spring quadrangle, Nye and Clark Counties, Nevada, and Inyo County, California. US Geological Survey, 2003. http://dx.doi.org/10.3133/mf2339.

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Surface-subsurface correlations of the Mesaverde Group and associated upper Cretaceous formations, Rock Springs, Wyoming, to Mount Harris, Colorado. US Geological Survey, 1987. http://dx.doi.org/10.3133/mf1937.

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