نتایج جستجو برای: soil conservation service curve number scs cn
تعداد نتایج: 1821329 فیلتر نتایج به سال:
Understanding hydrological behavior is an important part of effective watershed management and planning. Runoff resulted from rainfall a component that needed for efficient water resource In this paper, GIS based SCS-CN runoff simulation model was applied to estimate in Awash river basin. Global Curve Number (GCN250), Maximum Soil Water Retention (S) Rainfall used as input model. The final surf...
در سالهای اخیر مدل هیدروگراف واحد لحظهای ژئومورفولوژی (GIUH) به منظور تخمین پاسخ حوضه آبریز به بارش مازاد مقبولیت گستردهای کسب کرده است. این مدل بر اساس انتگرال پیچشی حاصلضرب بارش مؤثر در مؤلفه‌های هیدروگراف واحد لحظهای (IUH) استوار است. در این پژوهش با استفاده از خصوصیات مورفومتری حوضه آبریز کشکان، شبیهسازی بارش-رواناب در مقیاس روزانه توسط مدل تلفیقی GIUH و چهار روش شماره منحنی اصلاح‌شده...
The process of infiltration is one of the most important components of the hydrological cycle. On the other hand, the direct measurement of infiltration process is difficult, time spending and expensive. Infiltration models play a main role in managing water resources. Therefore, different types of models with various degrees of complexity were developed to reach this aim. So, this research ca...
In this research, The boundaries of the Koya catchment area have been delineated, and valley paths in region were drawn by using Water Modeling System (WMS) software, Analysis morphometric information indicated that characteristics watersheds contribute to floods. average surface runoff depth depends on curve number values are determined based types soil cover class according Harmonized World S...
The study area located on the east of Duhok city, it is divided into three sub-basins: Hishkero in east, Semel middle, and Gregewr west, covers about 487 km2. historical record rainfall data Duhok-Semel from Seismology Directorate Meteorological Stations were used to calculate water balance parameters for period 2005-2006 2020-2021. It receives 559.6 mm rain during rainy months. This occurs acr...
natural ecosystems provide many goods and services for human beings via their multiple functionalities. one of these important functions is the role of natural ecosystems in regulation of hydrologic cycle and increasing the infiltarion and retention of water in soil context and preventing from water runoff which may cause in unfavorable consequences like soil erosion and flooding. quantificatio...
The lack of water in arid and semi-arid areas has become a serious crisis, endangering living conditions. Sloping lands in the geographical and natural areas of Central Province have always been critical areas as sources of sediment production and erosion. Meanwhile, these areas provide valuable capacity for productive employment and conservation of water and soil resources through the construc...
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