摘要
1950年地震造成的大规模雪崩、冰崩及崩塌,堵塞古乡沟中游沟道,在降雨、气温及冰雪融水作用下,1953年溃决成特大冰川泥石流,流量达2.86万m^3/s。随着流域内补给物质的转移,古乡沟泥石流的规模、容重、暴发频率可能会减弱。
Through several field investigations to Guxiang Ravine in Xizang. The result showed that the catastrophic debris flow of Guxiang Ravine occurred in 1953,which caused by the earthquake in 1950. The earthquake caused catastrophic avalanches and collapses which,blocked the channel at the middle reaches of Guxiang Ravine by the influence of rainfall, temperature and ice-snow melt. The discharge reached 2. 86 × 104 m3/s- With the transportation of the materials in the catchment,the scale,unit weight and occurrence frequency of debris flow has a trend of decrease.
出处
《山地研究》
CSCD
1997年第4期296-299,共4页
关键词
西藏
古乡沟
泥石流
发展趋势
Xizang, Guxiang Ravine, debris flow, development trend
