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1998年入夏以来,武汉告急,九江告急,人们不禁要问,长江,你怎么了? 消融中的冰川博物馆 8月19日中国女子长江源科学考察探险队,向长江源头—格拉丹冬雪山,姜古迪如冰川走去。海拔5400米,一片冰雪的世界,网状水系,牦牛当车,帐篷当房,这一切都深深地吸引着队里的每一个人。 通常说的长江源头,是指青藏高原上楚玛尔河口以上的通天河上段源流地区,流域面积约十多万平方公里,平均海拔在5500米以上。长江源区由三条支流组成:沱沱河、当曲河和楚玛尔河。这三条源流从长度看,当曲河与沱沱河相当,楚玛尔河最短;以流域面积而论,则当曲河居首,楚玛尔河次之,沱沱河最小;从水量来看,当曲河为沱沱河、楚玛尔河的5至6倍;以流向一致性来看,沱沱河较其它两河为优,横贯流域中部。因此,确定长江有三源,正源为沱沱河,南源当曲河,北源楚玛尔
Since the summer of 1998, Wuhan has been in an emergency and Jiujiang has been in an emergency. People can not but ask: “What’s wrong with the Yangtze?” Glacier Museum in Ablation August 19 The Women’s Yangtze River Source Expedition expedition to the Yangtze River - Ginger Gudi walked like a glacier. Elevation of 5400 meters, a world of ice and snow, mesh water, yak when the car, tent as a room, all this is deeply attracted to everyone in the team. Generally speaking, the source of the Yangtze River refers to the upper reaches of the upper part of the Tongtianhe River above the Chumar River estuary on the Qinghai-Tibet Plateau. The drainage area is about 100,000 square kilometers with an average elevation of more than 5,500 meters. The Yangtze River source area consists of three tributaries: Tuotuohe, Dangqu and Chumar rivers. The three source streams from the length of view, when the Qu River and Tuotuo River equivalent, the shortest Chumar River; watershed area, then Qu Qu head, the Chumar River, Tuotuohe smallest; from the amount of water Look, when the Qu River is Tuotuo River, the Chumar River 5 to 6 times; to flow consistency, the Tuotuo River superior to the other two rivers, traversing the central basin. Therefore, it is confirmed that there are three sources in the Yangtze River, the source is Tuotuo River, Nanyuan Dangqu River, Chuyuan North