Relevant bibliographies by topics / Chel river basin

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Academic literature on the topic 'Chel river basin'

Author: Grafiati
Published: 18 May 2024

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Journal articles on the topic "Chel river basin"

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Ramírez-Mejía, Andrés F., and Francisco Sánchez. "Non-volant mammals in a protected area on the Central Andes of Colombia: new records for the Caldas department and the Chinchiná River basin." Check List 11, no. 2 (February 17, 2015): 1582. http://dx.doi.org/10.15560/11.2.1582.

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The Chinchiná River basin is located on the western slope of the Colombian Central Andes. This basin provides ecosystem services such as water provision for >500,000 people, but has suffered considerable ecosystem degradation, and the information on its biodiversity is limited. We inventoried the non-volant mammals in the Caldas’ Central Hydroelectric (CHEC) Reserve in the Chinchiná River basin, in the Caldas department. We detected 18 species of mammals, present the first record of Puma yagouaroundi for the high Chinchiná River basin, the first record of Leopardus wi­edii for the basin and a new altitudinal record of this felid for the Colombian Central Andes, and we also report a melanistic individual of Leopardus tigrinus. We also provide the first record of Conepatus semistriatus for Caldas department. We highlight the importance of preserving forests on the Chinchiná River basin such as the CHEC Reserve, since they made serve to connect Andean forest with paramo areas on the National Natural Park Los Nevados, adding possible habitat for movements of Puma concolor and other mammals.
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Wang, Zheng Bing, and Pingxing Ding. "THE BRANCHING CHANNEL NETWORK IN THE YANGTZE ESTUARY." Coastal Engineering Proceedings 1, no. 33 (October 11, 2012): 69. http://dx.doi.org/10.9753/icce.v33.sediment.69.

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The channels in the Yangtze Estuary have an ordered-branching structure: The estuary is first divided by the Chongming Island into the North Branch and the South Branch. Then the South Branch is divided into the North Channel and South Channel by the Islands Changxing and Hengsha. The South Channel is again divided into the North and South Passage by the Jiuduansha Shoal. This three-level bifurcation and four-outlet configuration appears to be a natural character of the estuary, also in the past (Chen et al., 1982), although the whole system has been extending into the East China Sea in the southeast direction due to the abundant sediment supply from the Yangtze River. Recently, the natural development of the system seems to be substantially disturbed by human interferences, especially the Deep Navigation Channel Project. For the understanding of the behaviour of the bifurcating channel system in the estuary we present analysis on two aspects: (1) the equilibrium configuration of river delta distributary networks, and (2) influence of tidal flow on the morphological equilibrium of rivers. Based on the analyses we conclude that the branching channel structure of the Yangtze Estuary can be classified as tide-influenced river delta distributary networks. Its basic structure is the same as in case of river dominated delta. The empirical relations describing the basic features of the river-dominated distributary delta networks can be explained by theoretical analysis, although they are not fully satisfied by the Yangtze Estuary because of the influence of the tide. Two major influences of the tide are identified, viz. increasing the resistance to the river flow into the sea and increasing the sediment transport capacity. As consequence of these two influences the cross-sectional area of the river/estuary increases in the seawards direction and the bed slope decreases. The insights from the analyses are helpful for the understanding of the impact of the Deep Navigation Channel Project on the large scale morphological development of the estuary.
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Yin, Jun, Zhe Yuan, and Run Wang. "The Long-term Projection of Surface Runoff in the Regions above Danjiangkou in Hanjiang River Basin based on Water-energy Balance." MATEC Web of Conferences 246 (2018): 01099. http://dx.doi.org/10.1051/matecconf/201824601099.

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The projection of surface runoff in the context of climate change is important to the rational utilization and distribution of water resources. This study did a case study in regions above Danjiangkou in Hanjiang River Basin. A basin scale hydrological model was built based on macroscale processes of surface runoff and water-energy balance. This model can describe the quantity relationship among climatic factors, underlying surface and surface runoff. Driven by hypothetical climatic scenarios and climate change dataset coming from CMIP5, the climate change impacts on surface runoff in the regions above Danjiangkou in Hanjiang River Basin can be addressed. The results showed that: (1) Compared with other distributed hydrological models, the hydrological model in this study has fewer parameters and simpler calculation methods. The model was good at simulating annual surface runoff. (2) The surface runoff was less sensitivity to climate change in the regions above Danjiangkou in Hanjiang River Basin. A 1°C increase in temperature might results in a surface runoff decrease of 2~5% and a 10% precipitation increase might result in a streamflow increase of 14~17%. (3) The temperature across the Fu River Basin were projected to increase by 1.4~2.3°C in 1961 to 1990 compared with that in 1961 to 1990. But the uncertainty existed among the projection results of precipitation. The surface runoff was excepted to decrease by 1.3~23.9% without considering the climate change projected by NorESM1-M and MIROC-ESM-CHEM, which was much different from other GCMs.
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Manna, Dipanwita, and Kapil Ghosh. "Comparison between two rivers and rivers’ basin in the light of the evidence of tectonic activity: Chel and Neora." Khoj:An International Peer Reviewed Journal of Geography 10, no. 1 (2023): 42–65. http://dx.doi.org/10.5958/2455-6963.2023.00004.8.

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Ghimire, Shreta, Zachary J. Lebo, Shane Murphy, Stefan Rahimi, and Trang Tran. "Simulations of winter ozone in the Upper Green River basin, Wyoming, using WRF-Chem." Atmospheric Chemistry and Physics 23, no. 16 (August 25, 2023): 9413–38. http://dx.doi.org/10.5194/acp-23-9413-2023.

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Abstract. In the Upper Green River basin (UGRB) of Wyoming and the Uintah Basin of Utah, strong wintertime ozone (O3) formation episodes leading to O3 mixing ratios occasionally exceeding 70 parts per billion (ppb) have been observed over the last 2 decades. Wintertime O3 events in the UGRB were first observed in 2005 and since then have continued to be observed intermittently when meteorological conditions are favorable, despite significant efforts to reduce emissions from oil and natural gas extraction and production. While O3 formation has been successfully simulated using observed volatile organic compound (VOC) and nitrogen oxide (NOx) mixing ratios, successful simulation of these wintertime episodes using emission inventories in a 3-D photochemical model has remained elusive. An accurate 3-D photochemical model driven by an emission inventory is critical to understanding the spatial extent of high-O3 events and which emission sources have the most impact on O3 formation. In the winter of 2016/17 (December 2016–March 2017) several high-O3 events were observed with 1 h mixing ratios exceeding 70 ppb. This study uses the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) to simulate one of the high-O3 events observed in the UGRB during March 2017. The WRF-Chem simulations were carried out using the 2014 edition of the Environmental Protection Agency National Emissions Inventory (EPA NEI2014v2), which, unlike previous versions, includes estimates of emissions from non-point oil and gas production sources. Simulations were carried out with two different chemical mechanisms: the Model for Ozone and Related Chemical Tracers (MOZART) and the Regional Atmospheric Chemistry Mechanism (RACM), and the results were compared with data from seven weather and air quality monitoring stations in the UGRB operated by the Wyoming Department of Environmental Quality (WYDEQ). The simulated meteorology compared favorably to observations with regard to temperature inversions, surface temperature, and wind speeds. Notably, because of snow cover present in the basin, the photolysis surface albedo had to be modified to predict O3 in excess of 70 ppb, although the models were relatively insensitive to the exact photolysis albedo if it was over 0.65. O3 precursors, i.e., NOx and VOCs, are predicted similarly in simulations with both chemical mechanisms, but simulated VOC mixing ratios are a factor of 6 or more lower than the observations, while NOx is also underpredicted but to a lesser degree. Sensitivity simulations revealed that increasing NOx and VOC emissions to match observations produced slightly more O3 compared to baseline simulations, but an additional sensitivity simulation with doubled NOx emissions resulted in a considerable increase in O3 formation. These results suggest that O3 formation in the basin is most sensitive to NOx emissions.
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Casciota, Jorge, Sergio Gómez, and Nelly Toresanni. "Gymnogeophagus che, a new species of the family Cichlidae from the Paraná river basin (Perciformes, Labroidei)." Revista del Museo Argentino de Ciencias Naturales 1 (2000): 53–59. http://dx.doi.org/10.22179/revmacn.2.124.

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LI, XU, and WEI ZHOU. "The species of Clupisoma from Yunnan, China (Teleostei: Siluriformes: Ailiidae), with a comment on the validity of the family Ailiidae." Zootaxa 4476, no. 1 (September 13, 2018): 77. http://dx.doi.org/10.11646/zootaxa.4476.1.7.

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After comparison of the types of the four species of Clupisoma recorded from Yunnan, China, no morphological differences between Clupisoma nujiangense Chen et al. and C. yunnanensis (He, Huang & Li) were found, and it is confirmed that the former is a synonym of the latter. Clupisoma yunnanensis occurs in the middle and lower of Nu-jiang, belonging to the Salween River basin. Clupisoma longianale (Huang) and Clupisoma sinense (Huang) are found in the lower Lancang-jiang, in the Mekong River basin. Using concatenated mitochondrial genes and nuclear genes, Wang et al. (2016) reconstructed the phylogeny of 38 species of catfishes belonging to 28 genera and 14 families. They reinstated the family, Ailiidae for a monophyletic Asian catfish group comprised of the three genera Ailia, Laides and Clupisoma. The family-group name Ailiidae was first proposed by Bleeker (1858) as Ailichthyoidei for a subfamily containing Ailia Gray. As such, there was no legitimate reason for Wang et al. (2016) to propose the Ailiidae as a new family group name but, instead, resurrect the existing name from the synonymy of the Shilbeidae.
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Saldin, V., I. Burcev, Yu Simakova, D. Shebolkin, and D. Gruzdev. "Izyuryel occurrence of Lower Carboniferous kaolins of the South Timan: occurrence mode, textural features." Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences, no. 2 (July 18, 2023): 68–80. http://dx.doi.org/10.19110/1994-5655-2023-2-68-80.

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This article presents new data on the Lower Carboniferous Izyuryel occurrence of kaolins in the South Timan. Through numerous excavations (trenches, test pits, and hand dog wells) in the area of about 2 km2 in the Cher Izhemskaya River basin (left tributary of the Izhma River), the authors have opened and studied the 3–9-m-thick kaolinite layer deposited with stratigraphic unconformity on the Upper Devonian dolomites and overlain by Lower Carboniferous dolomites. There are rock sections of two types differing in composition and thickness. The article describes the structure of the sections and rock texture. By the study results, the kaolinite strata are much thicker than previously assumed and, theoretically, contain more kaolin. The authors indicate the possible location of the most promising area with kaolin raw.
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LOUGHMAN, ZACHARY J., and BRONWYN W. WILLIAMS. "Cambarus ectopistes sp. nov., a new stream-dwelling crayfish (Decapoda: Cambaridae) from the French Broad, Pigeon, and Nolichucky River watersheds in the Appalachian Mountain region of North Carolina and Tennessee, USA." Zootaxa 5082, no. 4 (December 20, 2021): 322–40. http://dx.doi.org/10.11646/zootaxa.5082.4.2.

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The Cataloochee Crayfish, Cambarus ectopistes sp. nov., is a large, stream-dwelling crayfish that occupies a narrow noncontiguous distribution within the Appalachian Mountain region running through the Upper Tennessee River basin, in the French Broad, Pigeon, and Nolichucky watersheds along the Tennessee and North Carolina border. It is split from the southernmost extent of the C. robustus species complex, and is morphologically and genetically most similar to a second undescribed member of the group endemic to the upper Nolichucky River watershed in North Carolina. Cambarus ectopistes sp. nov. can be distinguished from other members of the C. robustus complex and co-distributed congeners by a combination of characters, including body size, coloration, and morphology of the chela and rostrum. The new species is typically found in channel and edge habitats of moderate to large perennial streams with large cobbles and boulders.
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Mideksa, Girma, and Tasisa Temesgen Tolossa. "Irrigation Water Potential and Land Suitability Assessment in Kurfa Chele-Girawa Watershed, Wabe Shebelle River Basin, Ethiopia." Turkish Journal of Agriculture - Food Science and Technology 8, no. 1 (January 29, 2020): 139. http://dx.doi.org/10.24925/turjaf.v8i1.139-146.2863.

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Assessing available water and land for irrigation are important for planning their use. In the watershed, stream flows from some of the rivers are not known and potential irrigable areas have not been identified. By delineating watershed boundary, irrigation suitability factors such as soil type, slope, land cover/use, and distance from the water supply were classified based on the FAO guideline for land evaluation in to S1, S2, S3 and N suitability classes independently. The irrigation potential suitability analysis of soil, slope, land cover/use and Euclidean distance indicates that 55.1 %, 95.6 %, 88.6% and 93.7% respectively are in the range of highly to marginally suitable. By weighted overlay analysis, total surface irrigation suitability potential of the study area is 54.6%, from this, the potential irrigable land obtained by multi_ criteria analysis has 45.9%. The total available flow above abstraction site is 335.7m3/s or 2.9-million-meter cube (MMC) annually.
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Dissertations / Theses on the topic "Chel river basin"

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Ghosh, Debarshi. "Study on fluvial dynamics of the chel river basin, North Bengal." Thesis, University of North Bengal, 2019. http://ir.nbu.ac.in/handle/123456789/4034.

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Book chapters on the topic "Chel river basin"

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Lama, Sonam, and Ramkrishna Maiti. "An Appraisal to Anthropogeomorphology of the Chel River Basin, Outer Eastern Himalayas and Foreland, West Bengal, India." In Geography of the Physical Environment, 19–52. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04532-5_2.

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Lama, Sonam, and Ramkrishna Maiti. "Morphotectonics of the Chel River Basin, Eastern Himalaya, India: Insights from Shuttle Radar Topography Mission Digital Elevation Model- Based Geomorphic Indices." In Himalayan Neotectonics and Channel Evolution, 367–96. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-95435-2_14.

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Mbuh, Mbongowo J., Paul R. Houser, and Ako Heidari. "Water Quality Estimation Using Combined Water Chemistry and Field Spectroscopy in the Shenandoah River, Virginia." In Environmental Information Systems, 1561–86. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7033-2.ch071.

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This study investigated the spatial dynamics of water quality across the Shenandoah River basin using spectroscopy and chemometrics to estimate chlorophyll (Chl), colored dissolved organic matter (CDOM) and turbidity using three band combinations and nutrients (total nitrogen and total phosphorous) in the Shenandoah River. The mean Chl a concentration for 555 nm, 560 nm and 640 nm were; 0.31 μg/l, 0.33 μg/l, and 0.51 μg/l respectively. Chlorophyll a showed strong correlations at band 640 (r = 0.92). The bands centered at 670/490 were the best in predicting CDOM and turbidity in the Shenandoah River Basin with an r2 = 0.56. Chemometrics analysis show that total phosphorous, nitrogen and turbidity can be predicted between 450 to 555nm and 670 to 710 nm, the range of wavelengths which indicated better predictability for spectroscopic analysis. The resultant concentration is used to develop predictive models to determine sensitive spectral variables for nitrogen, phosphorous, Chl-a, and CDOM.
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Conference papers on the topic "Chel river basin"

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Chen, Chih-Hung, and Chun-Ya Chuang. "Urban form in special geographical conditions: a case study in Kenting National Park." In 24th ISUF 2017 - City and Territory in the Globalization Age. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/isuf2017.2017.6186.

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Urban form in special geographical conditions: a case study in Kenting National Park. Chih-Hung Chen¹, Chun-Ya Chuang¹ ¹Department of Urban Planning, National Cheng Kung University E-mail: chihhungchen@mail.ncku.edu.tw Keywords: Kenting National Park, special geographical conditions, Historico-Geographical approach, morphotope Conference topics and scale: City transformations Since the land surface is heterogeneous, the natural landscape as an essential element in contemporary morphological studies becomes the initial factor in the formation of a settlement. Moreover, the interaction with natural landscape, built form and the boundary matrix can illuminate ecological perspective on the form of the city. (Scheer, 2016) To understand the urban form under special geographical conditions, a case study is conducted in Kenting National Park, which is a tropical area with rich landscape such as moutains, lakes and rivers, plains, basins, and surrounded by seas. An analytical approach based on Historico-Geographical approach (Kropf, 2009; Oliveira, 2016) is applied in this paper. After identifying the scope of 42 settlements, there are three outer shape types such as compact, scattered, linear. Then, three kinds of morphotopes (Conzen, 1988) can mainly be figured out by comparing the combination between streets, buildings and plots: i) Detached, duplex houses on small plots along the access road; ii) Attached buildings on small plots along the main road; iii) Villas or hotels on large plots along the main road. Finally, the relationship between the larger plan units (Conzen, 1960) and the geographical conditions shows that the homogeneous configuration of plan units corresponds to the certain landscape. On the other hand, this article seeks to find out the impacts and changes caused by special geographical conditions in consequence of the landscape affects not only the formation of urban form but the evolution because its influence on socio-economic conditions. References Conzen, M. R. G. (1960) Alnwick, Northumberland: A study in Town-plan Analysis (Institute of British Geographers, London). Conzen, M.R.G. (1988) ‘Morphogenesis, morphological regions, and secular human agency in the historic townscape, as exemplified by Ludlow’, in Urban Historical Geography. Recent progress in Britain and Germany, 253-272. Kropf, K. (2009) ‘Aspects of urban form’, Urban morphology 13(2), 105-20. Oliveira, V. (2016) Urban Morphology (Springer International Publishing, Switzerland), 102-111. Scheer, B. C. (2016) ‘The epistemology of urban morphology’, Urban Morphology 20, 5-17.
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Reports on the topic "Chel river basin"

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Sharp, Jeremy, Locke Williams, Duncan Bryant, Jake Allgeier, Kevin Pigg, Gary Bell, and Dana Moses. Rough River Outlet Works physical model study. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/41043.

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The US Army Corps of Engineers, Louisville District, requested the support and assistance of the US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory (CHL), in the evaluation of the hydraulic performance of the replacement Outlet Works for Rough River Dam. To support the design effort, CHL constructed a 1:25.85 scale physical model. The proposed features of the model in the domain are the curved approach channel, intake structure, transition, curved conduit, stilling basin, concrete apron, and retreat channel. Tests performed to evaluate the hydraulic performance illuminated a few design concerns. To address these issues, several key design changes were made. These included the retreat channel slope, end sill design, and transition design.
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Harris, Kathleen, and Christopher Haring. Tar-Pamlico and Neuse River Basins, North Carolina, geomorphic summary report. Engineer Research and Development Center (U.S.), June 2022. http://dx.doi.org/10.21079/11681/44600.

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The Tar-Pamlico and Neuse River Basins are neighboring basins in eastern North Carolina, both originating in the piedmont physiographic region, transitioning to coastal plains, and emptying into Pamlico Sound. The Pittsburgh District is responsible for the continued efforts to assist local sponsors with managing these basins and submitted a Water Operations Technical Support (WOTS) request. The WOTS program, funded by Headquarters, US Army Corps of Engineers, provides funding for the Coastal and Hydraulics Laboratory (CHL) to provide technical assistance to develop innovative solutions to water resource problems. The objectives of this study are to identify flood risk management alternatives to address the accumulation of woody debris in the channel systems. CHL compiled existing conditions information and researched current and potential new methods for managing woody debris to provide a comprehensive list of recommendations. The results and recommendations are provided in this document.
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