摘要
本文重点阐述中国近期冰川泥石流的区域分布、发育条件与类型特征。中国的冰川泥石流主要分布在东经102°以西、现代冰川急剧消退的10多座山系中,其中海洋型冰川区泥石流最发育,亚大陆型冰川区泥石流次之,极大陆型冰川区泥石流最弱。按成因划分泥石流类型有冰雪消融型、冰雪融水与雨水混合型及冰湖溃决型。泥石流的发生率与规模,也以海洋型冰川区泥石流为大,如西藏古乡泥石流1964年发生85次,最大流量2.86万立方米/秒。
This paper mainly elaborates the regional distribution, developingconditions and the typical characters of recent glacial debris flow in Chi-na. The glacial debris flow mainly distributes in more than ten modernmelting glacier mountain systems which locate at the west of 102°E, am-oung them, the glacial debris flow in maritime area develops extensively,in subcontinental areas takes a second place in developing extendity anddevelops weakest in extracontinental area. According to the causes, thedebris flows are classified as the type of melting ice and snow, the mix-ed type of melting ice and snow with rain and the type of bursting glacierlake. The frequences and scales of debris flow bursting are great in mari-time glacier area, for instance, Guxiang debris flow in Tibet bursted 85times in 1964, the maximum dischareg was 600m^3/s.
出处
《水土保持通报》
CSCD
北大核心
1989年第6期1-9,共9页
Bulletin of Soil and Water Conservation
