|
|
3rd International Youth Forum on Soil and Water Conservation
|
|
|
| عنوان فارسی |
|
|
| چکیده فارسی مقاله |
|
|
| کلیدواژه‌های فارسی مقاله |
|
|
| عنوان انگلیسی |
Modeling Hydrologic Responses Using Multi-Site and Single-Site Rainfall Generators in a Semi-Arid Watershed |
|
| چکیده انگلیسی مقاله |
Hydrologic response in a watershed is driven by precipitation. Multi-site rainfall generators can be used to model watersheds using spatially varied rainfall inputs to better analyze how the rainfall variability affects runoff generation. This study adopted both a single-site rainfall generator (CLIGEN) and a multi-site rainfall generator to generate two rainfall data sequences, which were then used to drive the Soil and Water Assessment Tool (SWAT) for runoff simulation. Three different sized watersheds in the 148 km2 Walnut Gulch Experimental Watershed were selected to evaluate the hydrologic response. Runoff calibration was done against measured runoff in the watershed. Statistics showed that the single-site and multi-site rainfall generators gave similar results regarding annual precipitation. However, the multi-site generator performed much better than the single-site generator in both mean summer flow and for different return period flows. The runoff derived from the single-site generator was significantly over-estimated in all three watersheds, whereas the multi-site generator performed satisfactorily in the smaller watersheds and overestimated in the largest watershed. This indicated that in small to medium sized watersheds, the spatial variability of rainfall could play an important role for hydrologic response because of the heterogeneity of convective rainfall in this semi-arid region, which makes the application of multi-site rainfall generator a better option then the single-site generator. |
|
| کلیدواژه‌های انگلیسی مقاله |
|
|
| نویسندگان مقاله |
zhao|nearing|phillip guertin |
|
| نشانی اینترنتی |
|
| فایل مقاله |
فایلی برای مقاله ذخیره نشده است |
| کد مقاله (doi) |
|
| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
|
| نوع مقاله منتشر شده |
|
|
|
|
برگشت به:
صفحه اول پایگاه |
دوره مرتبط |
کنفرانس مرتبط |
فهرست کنفرانس ها
|
