IDENTIFICATION OF HOMOGENEOUS REGIONS FOR FLOOD FREQUENCY-ANALYSIS

被引：62

作者：

WILTSHIRE, SE ^{[1
]}

机构：

[1] INST HYDROL,WALLINGFORD OX10 8BB,OXON,ENGLAND

来源：

JOURNAL OF HYDROLOGY | 1986年 / 84卷 / 3-4期

关键词：

STATISTICAL METHODS - WATERSHEDS - Hydrology;

D O I：

10.1016/0022-1694(86)90128-9

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A procedure for classifying basins into distinct, homogeneous groups for regional flood frequency analysis is described. The scheme consists of an iterative search through the basin characteristic database which optimizes statistics that describe the efficiency of grouping. Application of the procedure to basins in Britain yields five groups formed on the basis of basin area, average rainfall and urban fraction. Four of these groups are homogeneous with respect to the coefficient of variation of the annual maximum flood series. The properties of these groups compare favorably with ten geographic regions hitherto used for flood analysis in Britain. A further procedure is described which eliminates edge effects present in quantile estimation close to region boundaries.

引用

页码：287 / 302

页数：16

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