• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of the American Water Resources Association >PHYSICALLY BASED, HYDROLOGIC MODEL RESULTS BASED ON THREE PRECIPITATION PRODUCTS
【24h】

PHYSICALLY BASED, HYDROLOGIC MODEL RESULTS BASED ON THREE PRECIPITATION PRODUCTS

机译：基于三种沉淀产品的基于物理的水力学模型结果

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The main objective of the study is to examine the accuracy of and differences among simulated streamflows driven by rainfall estimates from a network of 22 rain gauges spread over a 2,170 km~2 watershed, NEXRAD Stage III radar data, and Tropical Rainfall Measuring Mission (TRMM) 3B42 satellite data. The Grid-ded Surface Subsurface Hydrologic Analysis (GSSHA), a physically based, distributed parameter, grid-structured, hydrologic model, was used to simulate the June-2002 flooding event in the Upper Guadalupe River watershed in south central Texas. There were significant differences between the rainfall fields estimated by the three types of measurement technologies. These differences resulted in even larger differences in the simulated hydrologic response of the watershed. In general, simulations driven by radar rainfall yielded better results than those driven by satellite or rain-gauge estimates. This study also presents an overview of effects of land cover changes on runoff and stream discharge. The results demonstrate that, for major rainfall events similar to the 2002 event, the effect of urbanization on the watershed in the past two decades would not have made any significant effect on the hydrologic response. The effect of urbanization on the hydrologic response increases as the size of the rainfall event decreases.
机译：该研究的主要目的是检验由22个分布在2170 km〜2分水岭上的雨量计网络，NEXRAD第三阶段雷达数据和热带雨量测量任务（TRMM）的降雨估算驱动的模拟水流的准确性和差异。 ）3B42卫星数据。基于网格的地表地下水文分析（GSSHA）是一种基于物理的，分布式参数，网格结构的水文模型，用于模拟德克萨斯州中南部的瓜达卢佩河上游流域的2002年6月洪水事件。三种测量技术估算的降雨场之间存在显着差异。这些差异导致流域模拟水文响应的差异更大。通常，由雷达降雨驱动的模拟比由卫星或雨量计估计驱动的模拟产生更好的结果。这项研究还概述了土地覆盖变化对径流和河流流量的影响。结果表明，对于类似于2002年的重大降雨事件，过去二十年来城市化对流域的影响不会对水文响应产生任何重大影响。随着降雨事件规模的减小，城市化对水文响应的影响增加。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号