排序方式: 共有3条查询结果,搜索用时 0 毫秒
1
1.
Dividing a catchment to subcatchment or hillslope scales allows for better scrutiny of the changes in spatial distribution of rainfall, soil attributes and plant cover across the catchment. An instantaneous unit hydrograph model is suggested for simulating runoff hydrographs for complex hillslopes. This model is able to estimate surface and subsurface flows of the catchment based on the Dunne-Black mechanism. For this purpose, a saturation model is used to separate the saturated and unsaturated zones in complex hillslopes. The profile curvatures (concave, straight and convex) and plan shapes (convergent, parallel and divergent) of complex hillslopes are considered, in order to compute the travel time of surface and subsurface flows. The model was used for prediction of the direct runoff hydrograph and subsurface flow hydrograph of Walnut Gulch No. 125 catchment in Arizona (USA). Based on results, the geometry of hillslopes can change the peak of the direct runoff hydrograph up to two-fold, either higher or lower. The divergent hillslopes show higher peaks in comparison with the parallel and convergent hillslopes. The highest and lowest peak flows correspond to divergent-concave and convergent-straight hillslopes, respectively. 相似文献
2.
Khosrojerdi Tooraj Moosavirad Seyed Hamed Ariafar Shahram Ghaeini-Hessaroeyeh Mahnaz 《Natural Resources Research》2019,28(3):1107-1124
Natural Resources Research - Efficient water allocation is one of the most prominent issues in water resources management. In this research, a two-stage interval-parameter stochastic fuzzy... 相似文献
3.
Prediction of temporal scour hazard at bridge abutment 总被引:2,自引:1,他引:1
Reza Mohammadpour Aminuddin Ab. Ghani Mohammadtaghi Vakili Tooraj Sabzevari 《Natural Hazards》2016,80(3):1891-1911
1