地理学报 ›› 1955, Vol. 21 ›› Issue (3): 259-271.doi: 10.11821/xb195503003

• 论文 • 上一篇    下一篇

汉江上游丹江口至白河间的河谷地貌

朱震达   

  1. 中国科学院地理研究所
  • 出版日期:1955-07-15 发布日期:1955-07-15
  • 基金资助:

THE VALLEY FORM OF THE UPPER HAN RIVER, FROM PAI-HO TO TAN-CHIANG-KOU

CHU CHEN-TA   

  1. Institute of Geography, Academia Sinica
  • Online:1955-07-15 Published:1955-07-15

摘要: 汉江全长1,497公里,流域面积174,000平方公里,包括陕西南部、四川东北一小部、河南西南部以及湖北大部:是长江中游最大的支流。

关键词:

Abstract: The Han river above Tan-chiang-kou flows in a W-E direction, cutting obli-quely the NW-trending strata composed mainly of Sinian schists and limestones and tertiary red beds. The alternation of resistant and soft rocks allows the development of basin and gorge in this stretch of the valley, so that it may narrow at places to about 100 m and broaden at others 18 times as wide. The gradient, varying from 0.13呱to 0.48呱,is interrupted by rapids of all sorts. Favourable sites for reservoirs are numerous.