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沱沱河

沱沱河
河流
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沱沱河
国家  中华人民共和国
屬於 长江流域、长江源水系
河口 汇入长江源
长度 358 km(222 mi
流域面积 17,000 km²(6,564 mi²
流量
 - 平均流量 32 /s(1,130 ft³/s
支流 扎木曲

沱沱河又称托托河,曾被认为是长江的源头,經多年驗證測量与定义後,發現當曲才是長江正源。它发源于唐古拉山脉主峰格拉丹冬西南侧姜根迪如冰川,冰川海拔在5,500米以上。在源头附近的海拔6,000米以上的雪峰共有二十余座,雪线高达5,800米。河长358千米,流域面积17,000平方千米,年均流量32立方米每秒。[1]

沱沱河从姜根迪如冰川发源后首先向北流,并汇聚其它冰川小溪,在上流处山地里形成一些相当深的河谷,部分地方可以达20米深。在葫芦湖附近它开始转向东,这一段大约有130千米长,在它的终点沱沱河宽20米,深三米,已经有相当大的规模。在这里青藏公路跨过沱沱河。这座长江源大桥被看作是长江上的第一座桥。在离发源地375千米处沱沱河宽30米,改名为通天河

参考文献

[编辑]
  1. ^ 王杰等主编.长江大辞典. 1997, 武汉出版社.
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沱沱河
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