Geomorphic Characteristic Of The Himalayan Mountains And Its Tectonic Implications

Introduing the basic concept and the development and the application of digital elevation model(DEM).Presenting the development and the working of apatite fission track(AFT).GTO-PO30 and SRTM3 digital elevation model data were used to build up DEMs of Qinghai-Tibet plateau and Himalayan mountains,and the morphotectonic issues,such as elevation and slope, were subsequently discussed.The figures of elevation and slope could contribute to the demonstration of the larger fault systems within south of Tibet and the Himalayan orogen.Annual precipitation data of about 55 years from the meteorological stations within Tibetan plateau were analyzed.In combination with annual precipitation data of the south Himalaya from recent references, these precipitation data and DEM illustrated that from east to west and from south to north across the Qinghai-Tibet plateau and the Himalaya,the precipitation decreased,the elevation increased with the decrease of relief.Fission track data of apatite from Himalaya and south Tibet also showed that from east to west and from south to north,the denudation rates decreased,couple with the precipitation data.This clearly suggested that the regions with high annual precipitation underwent stronger erosion,indicative of the coupled of long-term landscape denudation with short-term precipitation observations within Qinghai-Tibet plateau and the Himalaya.