| CASC2D模型与GSSHA模型在栾川流域的径流模拟 |
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| 引用本文： | 李致家,屈晨阳,黄鹏年,姚成. CASC2D模型与GSSHA模型在栾川流域的径流模拟[J]. 河海大学学报(自然科学版), 2017, 45(1): 1-6 |
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| 作者姓名： | 李致家 屈晨阳 黄鹏年 姚成 |
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| 作者单位： | 河海大学水文水资源学院,江苏 南京 210098,河海大学水文水资源学院,江苏 南京 210098,河海大学水文水资源学院,江苏 南京 210098,河海大学水文水资源学院,江苏 南京 210098 |
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| 基金项目： | 国家自然科学基金(41130639, 51179045);水利部公益性行业科研专项(201501022,201401034) |
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| 摘 要： | 为研究半干旱半湿润流域复杂产流机制下不同模型结构对于径流模拟的影响,选取栾川流域为研究对象,在采用相同的DEM、土地覆盖以及土壤资料的前提下,利用基于超渗产流机制的CASC2D模型以及在其模型结构基础上改Green-Ampt方程为理查德方程计算下渗并增加地下水径流的GSSHA模型对1964—2000年间的8场洪水进行径流模拟。结果表明,GSSHA模型在栾川流域获得较好的模拟效果,除峰现时差外,GSSHA模型在洪峰、径流深模拟以及确定性系数方面均比CASC2D模型有较大提升。
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| 关 键 词： | 分布式水文模型 CASC2D模型 GSSHA模型 半干旱半湿润流域 理查德方程 地下水径流 栾川流域 |
| 收稿时间： | 2016-05-25 |
Simulation of runoff in Luanchuan Basin using CASC2D and GSSHA models |
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| LI Zhiji,QU Chenyang,HUANG Pengnian and YAO Cheng. Simulation of runoff in Luanchuan Basin using CASC2D and GSSHA models[J]. Journal of Hohai University (Natural Sciences ), 2017, 45(1): 1-6 |
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| Authors: | LI Zhiji QU Chenyang HUANG Pengnian YAO Cheng |
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| Affiliation: | College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China,College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China,College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China and College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China |
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| Abstract: | In order to investigate the influence of different model structures on runoff simulation in semi-arid andsemi-humid basins with complex runoff generation mechanisms,the CASC2D model and GSSHA model were used tosimulate eight flood events from 1964 to 2000 in the Luanchuan Basin using the same digital elevation model(DEM) data,land cover data,and soil data. The CASC2D model is based on the excess-infiltration mechanism,andthe GSSHA model is based on the CASC2D model through addition of groundwater runoff and transformation of theGreen-Ampt equation into the Richards equation to calculate the infiltration. The runoff simulation results show thatthe GSSHA model performs well in the Luanchuan Basin. Compared with the CASC2D model,the simulation offlood peak,runoff depth,and the deterministic coefficient are highly improved by the GSSHA model except for peaktime error. |
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| Keywords: | distributed hydrological model CASC2D model GSSHA model semi-arid and semi-humid basin Richards equation groundwater runoff Luanchuan Basin |
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