THE EFFECT OF RAINFALL INTENSITY ON SURFACE RUNOFF AND SEDIMENT YIELD IN THE GRAY DUNES ALONG THE DUTCH COAST UNDER CONDITIONS OF LIMITED RAINFALL ACCEPTANCE

被引：22
|
作者：
JUNGERIUS, PD
TENHARKEL, MJ
机构：
[1] Landscape and Environmental Research Group, University of Amsterdam, 1018 VZ Amsterdam
来源：
CATENA | 1994年 / 23卷 / 3-4期
关键词：
D O I：
10.1016/0341-8162(94)90072-8
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Surface runoff and sediment yield in the grey dunes along the Dutch coast are rare events restricted to conditions of water repellency in summer. The sediment moves in mudflow-like tongues. From March 1989 to December 1990, weekly surface runoff and sediment yield have been measured on an experimental plot, along with a number of meteorological parameters. Rainfall intensity is more important than total amount of precipitation for the production of runoff and sediment. Rainfall intensity affects the erosion process in two ways: by supplying the large amount of water needed for the high water: sand ratio in the sand flow, and by providing the high frequency drop impact needed to maintain a high hydraulic pressure in the sand flow.
引用
收藏
页码：269 / 279
页数：11
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