海螺沟冰川冰下河堵溃问题

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 成都山地所知识仓储（2009年以前）

	海螺沟冰川冰下河堵溃问题
	吕儒仁; 钟祥浩
刊名	冰川冻土
	1996
卷号	18 期号:S1 页码:257-263
关键词	冰下河堵塞和溃决次数和水量年内变化
ISSN号	1000-0240
其他题名	Block and Burst of the Water Channels Inside Hailuogou Glacier
通讯作者	吕儒仁
合作状况	其它
中文摘要	1994年作者在海螺沟冰川水文站观测到水位陡降急升的现象。将全年自记水位曲线搜寻,共得到79组冰下河堵溃资料。冰下河堵溃水量(W,m~3)为流量减幅(△Q,m~3/s)与堵溃平均历时(t,mi)的乘积,即W=60△Qt·t和W还存在对数函数关系,即t=A+B lnW,冰下河堵溃次数与水量大小和年内气候变化的水热组合紧密联系,它对年内气候变化的响应上半年有滞后性,下半年有惯性滚动拖后特点。
英文摘要	The hydrologic station of Hailuogou Glacier at an elevation of 2 923 m is located at 101°59’ 20" E and 29° 34’ 16" N. The distance from the station to the glacial terminus is about 1 km. From the observation at the station in the summer of 1994, phenomenon is found, which shows that the water level of the river suddenly lowers, and then a rapidly rises again, and the fluctuation curve of the water level appears in a V-shape. When tracing back to the terminus, there was not abnormal change along the flow way of the river. It can be ex- plained by that the water channels inside ice are partially blocked up by the ice body carving in, then the discharge reduces and the water level lowers. Afterward, the ice-blocked water body bursts and the discharge increases. After the outburst, the water level moves back to the original posrition.The outburst water volume W(m3) of the ice-blocked water channels can be shown as follows:W= 60ΔQt (1)where ΔQ(m3 / s) is the discharge diffecence and t (minute) the duration of the ice block, t is related to the natural logarithm of W, for the V-shape curve, when t≤30 minutes,t= -14.056819+ 3.4624501nW (2)When 30 minutes
学科主题	P343
分类号	P343
收录类别	CSCD ; 北大中文核心
语种	中文
CSCD记录号	CSCD:521670
公开日期	2011-03-28
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/2874]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）中国科学院水利部成都山地灾害与环境研究所
作者单位	中国科学院水利部成都山地灾害与环境研究所
推荐引用方式 GB/T 7714	吕儒仁,钟祥浩. 海螺沟冰川冰下河堵溃问题[J]. 冰川冻土,1996,18(S1):257-263.
APA	吕儒仁,&钟祥浩.(1996).海螺沟冰川冰下河堵溃问题.冰川冻土,18(S1),257-263.
MLA	吕儒仁,et al."海螺沟冰川冰下河堵溃问题".冰川冻土 18.S1(1996):257-263.