Rainfall‐discharge relationships for a monsoonal climate in the Ethiopian highlands
Rainfall‐discharge relationships for a monsoonal climate in the Ethiopian highlands
复制标题
埃塞俄比亚高地季风气候的降雨与流量关系
DOI：
10.1002/hyp.7022
复制
发表时间：
2008
影响因子：
3.2
通讯作者：
T. Steenhuis
中科院分区：
文献类型：
--
作者：
Benjamin M. Liu;A. Collick;G. Zeleke;E. Adgo;Z. Easton;T. Steenhuis
这项研究对埃塞俄比亚北部的Andit Tid、Anjeni和Maybar流域进行了简单的降雨流量分析。20世纪80年代，土壤保持研究计划(SCRP)在每个地点建立了监测站，至今仍在记录气候和溪流的测量。为了说明如何利用这些数据深入了解流域水平的径流机制，对每个流域的有效降雨量和径流量之间建立了简单的线性关系，得出的结论是，自入季以来累计有效季节性降雨量约为500毫米后，所有三个流域都表现出一致的水文行为。在达到500毫米的降雨量阈值后，这些流域的任何进一步降雨量中约有50%将直接构成集水区的径流。版权所有©2008 John Wiley&Sons，Ltd.
This study presents a simple rainfall‐discharge analysis for the Andit Tid, Anjeni, and Maybar watersheds of northern Ethiopia. The Soil Conservation Research Programme (SCRP) established monitoring stations in each of these sites during the 1980s, with climate and stream flow measurements being recorded up to the present. To show how these data could be used to provide insight into catchment‐level runoff mechanisms, simple linear relationships between effective precipitation and runoff are developed for each watershed, with the conclusion that all three watersheds exhibit consistent hydrologic behaviour after approximately 500 mm of cumulative effective seasonal rainfall has fallen since the beginning of season. After the 500 mm rainfall threshold is reached, approximately 50% of any further precipitation on these watersheds will directly contribute to catchment runoff. Copyright © 2008 John Wiley & Sons, Ltd.