نتایج جستجو برای: physical characteristics of watershed
تعداد نتایج: 21220890 فیلتر نتایج به سال:
Estimation of floods in a basin with various return periods is one of the effective management strategies for reducing flood damage. One of the methods for estimating flood discharge is to make synthetic unit hydrograph using the physical characteristics of the basin. The more accurate inputs of the model, the more validated results. Hence, in basins in which Instantaneous peak discharge is rec...
Remote Sensing & GIS technique was used for extracting geomorphological characteristics of watersheds. Its application provides an efficient and accurate means evaluation these characteristics. Drainage system delineation is important to better understand hydrologic system, water resource management its planning. Morphometric analysis any drainage basin in a systematic method has great importan...
Impoundments can drastically change the physical and biological characteristics of fluvial systems. Changes in characteristics, such as reductions flow, increased sediment deposition, surface area, often influence system’s components, including plant, macroinvertebrate, fish assemblages. In addition to having direct effects on impounded waterbodies, impoundments also have wide-ranging at waters...
The occurrence trend of floods in recent years shows that the most of Iran regions located in attacks of destructive floods and loss of life and property of flood damages is increasing. Watershed management practices (WMPs) are one of the superior and appropriate solutions for flood hazards mitigation. The impact of WMPs can be investigated using different approaches. In this study, the direct ...
The Indo-Pacific humpback dolphin ( Sousa chinensis ) has been reported to prefer estuary habitats. This study explored the environmental factors affecting a critically endangered population off coast of Yunlin, Taiwan. We measured sighting rates and characteristics affected by watershed, including seven physical (watershed rainfall, watershed runoff, estuarine turbidity, pH, salinity, temperat...
This research aims to analysis the biophysical characteristics of watershed of Deli River to know potential flooding in Medan. The research is conducted at Deli River, which is located in 3 locations in North Sumatera namely Karo Regency, Deli Serdang and Medan City. Indonesia. This research used field survey method, survey activity in the form of observation and verification of characterizatio...
Boreal stream networks are embedded in a mosaic of wetlands and lakes interspersed in the forest landscape. This mosaic results in complex and dynamic water chemistry that varies depending on stream size, catchment characteristics, season and flow. Spatiotemporal variations in stream acidity are however frequently predictable based on spatial patterns in the terrestrial watershed, and acidity h...
In this paper, the relationship between rainfall and runoff is examined according to SCS-CN method based on DEM, soil land use maps over Ballikaya Watershed. For applicability of method, firstly, basin physical characteristics are compiled in Arc-GIS environment. Then, parameters related properties processed via HEC-GeoHMS, continuous rainfall-runoff simulations estimated by HEC-HMS. The simula...
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
objective: the aim of this study is to provide a management plan for the sykan watershed of darre shahr city located in ilam province using gis in land use planning. methods: for land using of sykan watershed of ilam province with about 9 hectares area, map of classes, elevation, percent slope, geographical aspects, soil characteristics, vegetation density and the final map units were combined ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید