探索对降雨径流事件的控制:伊朗事件径流系数的空间动态

IF 2.8 3区环境科学与生态学 Q2 WATER RESOURCES

Hydrological Sciences Journal-Journal Des Sciences Hydrologiques Pub Date : 2023-03-23 DOI:10.1080/02626667.2023.2193297

A. Jahanshahi, M. Booij

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引用次数: 1

摘要

摘要基于比较水文学的概念，研究了影响径流系数空间变异的因素。我们分析了伊朗963个流域的18468次风暴事件，面积从101到8467 km2不等。由于长期水文气候条件和其他流域描述符(cd)，平均RCs在空间上存在差异。通过对RCs和cd的统计矩的相关分析，研究了RCs空间变异性的控制因素。结果表明:①在国家尺度上，流域海拔高度是控制RCs的最重要因素，年平均降水量、实际蒸发量与降水量之比、潜在蒸发量与降水量之比等水文气候属性也是控制RCs的重要因素;(2)在区域尺度上，集水区面积是控制RCs的主要因素，但在国家尺度上的重要性不及水文气候控制。

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Exploring controls on rainfall–runoff events: spatial dynamics of event runoff coefficients in Iran

ABSTRACT This study investigates the controls that influence the spatial variability of event runoff coefficients (RCs) based on the comparative hydrology concept. We analysed 18 468 storm events in 963 Iranian catchments ranging in size from 101 to 8467 km2. The mean RCs vary spatially due to long-term hydro-climate conditions and other catchment descriptors (CDs). The controls on spatial variability of RCs are investigated using a correlation analysis of the statistical moments of the RCs and CDs. The results indicate (1) catchment elevation is the most important control on RCs at the country scale, and hydro-climatic attributes such as mean annual precipitation, ratio of actual evaporation to precipitation, and the ratio of potential evaporation to precipitation are other important controls on RCs; and (2) at the regional scale, catchment area is a major control on RCs, although it is not as important as hydro-climatic controls at the national scale.

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来源期刊

Hydrological Sciences Journal-Journal Des Sciences Hydrologiques 环境科学-水资源

CiteScore

6.60

自引率

11.40%

发文量

144

审稿时长

9.8 months

期刊介绍： Hydrological Sciences Journal is an international journal focused on hydrology and the relationship of water to atmospheric processes and climate. Hydrological Sciences Journal is the official journal of the International Association of Hydrological Sciences (IAHS). Hydrological Sciences Journal aims to provide a forum for original papers and for the exchange of information and views on significant developments in hydrology worldwide on subjects including: Hydrological cycle and processes Surface water Groundwater Water resource systems and management Geographical factors Earth and atmospheric processes Hydrological extremes and their impact Hydrological Sciences Journal offers a variety of formats for paper submission, including original articles, scientific notes, discussions, and rapid communications.