青藏高原水汽输送路径的探讨

青藏高原的水汽主要来源于印度洋,其水汽输送路径可分为东西两条,东线为印度洋暖湿气流自孟加拉湾沿布拉马普特拉河、雅鲁藏布江(或横断山三江河谷)伸入高原北部边缘地带,为念青唐古拉山冰川发育提供物质基础,另一支西线来自印度洋阿拉伯海,其输送路线因季节不同而有差异,云团或自印度半岛腾空跨入高原,或自印巴次大陆经帕米尔高原沿南疆盆地南縁进入西藏阿里,为西喜马拉雅山、喀喇昆仑山和昆仑山丰厚的冰川积累起着重要作用。

A PRELIMINARY ANALYSIS ABOUT THE TRACKS OF MOISTURE TRANSPORTATION ON THE QINGHAI-XIZANG PLATEAU

In this paper, the tracks of moisture transportation on the Qinghai-Xizang Plateau are discussed. It is found that the warm wet current in Tibet from Indian Ocean. There Are two tracks of moisture transportation, the one is east way, from Bay of Bengal, along the Brahmaputra, Yar-lungzangbo River northward into the northern region of the plateau and its tributaries are represent the form of "wet tongue"; the other is the west way, but it varies with the seasons, or from India direct leap over the Himalaya monutains into the plateau, or from Pakistan, Afghanistan through the Pamir plateau and gets into Ngari Region in Tibet.The relationship between the moisture transportation tracks and the distribution of modern mountain glaciers in Tibet are discussed too.