Statistical features of the drainage network in the Qinghai-Tibet Plateau and the effect of the uplift
LIU Le1, WANG Zhaoyin1, YU Guoan2, LI Teng3
1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;
2. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
3. Hanergy Holding Group Limited, Beijing 100107, China
Abstract：The continued uplift of the Qinghai-Tibet Plateau since the Late Cenozoic Era has not only tremendously influenced the plateau topography, but has also resulted in unique river networks in this area. The features of the stream networks and the influence of the plateau uplift on the river morphology were studied by measuring the number of streams, stream lengths, slopes and areas of the drainage basins for the Yalutsangpo, Jinsha, Yalong, Lancang, Nujiang, and upper Yellow River from shuttle radar topography mission (SRTM) data. The networks of the 6 rivers were mapped and analyzed by comparisons with the Horton Laws. The networks are represented by the Horton Laws for the streams from the first to sixth orders but deviate dramatically at the highest order. The results show that the plateau uplift is uniform in the inner part but the very different uplift speed at the plateau edge disrupts the stream networks.
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LIU Le, WANG Zhaoyin, YU Guoan, LI Teng. Statistical features of the drainage network in the Qinghai-Tibet Plateau and the effect of the uplift. Journal of Tsinghua University(Science and Technology), 2015, 55(9): 964-970.
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