摘要
珠穆朗玛峰东侧东绒布冰川积累区的降水主要是由印度夏季风环流带来的.根据东绒布冰芯记录恢复的净积累量与印度中北部和印度半岛东部地区的夏季风降水量具有基本一致的周期,三者有着较好的相关性,因此可以通过冰芯净积累量来反映更长时间序列印度某些地区夏季风降水量的变化趋势.东绒布冰芯净积累量的相对变化幅度大于印度夏季风降水量的变化,表明高海拔地区的降水比低海拔地区具有更高的敏感性.
The precipitation in the accumulation zone of the East Rongbuk Glacier on the east slope of the Mount Qomolangma is mostly brought on by Indian summer monsoon. It is found that there is a coincidence in period between the net accumulation rate derived from the East Rongbuk ice core and the summer monsoon rainfall of North Central India and East Peninsular India, together with a fine correlation between them. Thus, the series of Indian summer monsoon rainfall of the regions mentioned above could be extrapolated from the net accumulation rate of the East Rongbuk Glacier. Variation of the net accumulation rate of the East Rongbuk Glacier is appreciably earlier than that of the Indian summer monsoon rainfall, and the changing magnitude of the former is larger than that of the later, which means sensitivity of precipitation increase with elevation.
出处
《冰川冻土》
CSCD
北大核心
2004年第2期129-134,共6页
Journal of Glaciology and Geocryology
基金
中国科学院知识创新工程重大项目(KZCX1 10 02
KZCX1 10 09
KZCX2 SW 118)
国家自然科学基金项目(40205007
49901004)
国际合作项目"中美珠穆朗玛峰绒布冰川冰芯合作研究"
中国气象科学研究院博士启动基金资助
关键词
东绒布冰芯
净积累量
印度夏季风降水
冰川
East Rongbuk ice core
net accumulation
Indian summer monsoon rainfall
