PRELIMINARY STUDY ON THE RIVER RUNOFF DISTRIBUTION IN NORTHWEST REGION OF CHINA

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  • Institute of Geography, Academia Sinica, Beijing

Online published: 1986-01-20

Abstract

According to feature of hydrology in northwest region of China,three paramers α,β and γ can be used to study river runoff distribution,α= W4-8/W7-9 here W4-8—total runoff volume from April to June,W7-9—total runoff volume from July to Sept..α can be explained as a ratio of volume of season snow melt to glacial melt at high mountains and rain volume in total annual runoff.
β=W4-8/W10-3
here W4-9—total runoff volume from April to Sept.,W10-3—total run off volume from Oct.to next March..β can be explained as a ratio of flood runoff volume to non flood runoff volume,also a ratio of supply of ground water tototal annual runoff volume. The parameter γ,can be estimated by
γ=(α-α)/σα
here α—long term average annual αα—mean square error of α. The paper used the three parameters to make preliminary an approach to the classification of rivers in northwest region of China.

Cite this article

Tang Qicheng . PRELIMINARY STUDY ON THE RIVER RUNOFF DISTRIBUTION IN NORTHWEST REGION OF CHINA[J]. SCIENTIA GEOGRAPHICA SINICA, 1986 , 6(1) : 48 -55 . DOI: 10.13249/j.cnki.sgs.1986.01.48

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