西藏东南部米堆冰湖面积和水量变化及其对溃决灾害发生的影响
Study on the Variations of Lake Area & Volume and Their Effect on the Occurrence of Outburst of MUDUI Glacier Lake in Southeastern Tibet
查看参考文献30篇
|
文摘
|
冰湖溃决灾害是青藏高原地区主要的灾害之一。详细了解冰湖的面积和水量变化及其原因,有助于更准确地确定其溃决的可能性和产生破坏的程度和范围。米堆冰湖为一个典型的冰碛物阻塞冰湖,1988年7月15日曾发生溃决。本研究利用1980年1∶5万地形图和DEM、1988年TM影像、2001年IKONOS影像以及2001、2007、2009、2010年ALOS影像,提取冰湖溃决前后的面积变化,结合野外实地测得的冰湖水深,获得冰湖不同时期的水量及其变化。同时,利用自动水位计,监测湖泊相对水深的变化及其原因。结果显示,米堆溃决前面积达到64×10~4m~2,水量为699×10~4m~3,溃决使得601.83×10~4m~3的水量溃出,水位下降了17.18 m,但溃决口并未达到冰湖最低处,溃决后仍有97.17×10~4m~3的水量。近年来,气温升高融水增加使得冰湖面积和水量不断增加,按照目前的水量增加速率,冰湖再次发生溃决的可能性较小,而在由于其他原因使得冰湖发生堵塞或大量外来物质(冰川断裂、滑坡等)填充进冰湖时,可能导致冰湖水位急剧上升,再次发生溃决。 |
|
其他语种文摘
|
Glacial lake outburst is one of the main hazards on the Tibetan Plateau.It is very important to understand the detailed information of variations and reasons of glacial lake area & volume for evaluating the possibility of glacial lake outburst and its damage degree.Midui Glacial Lake is a typical moraine-dammed lake,which had an outburst on July 15th in 1988.In this study the authors extract this lake areas in different stages from the topographic map(1:5000) taken in 1980 and TM images in 1988,IKONOS in 2001,ALOS in 2001/2007/2009/ 2010.The lake volumes in different stages are calculated by using the lake areas and the bathymetric survey results.Meanwhile,the authors monitor the relative lake water level changes by using automatic water gauges.Results show that the area and water volume of Midui glacial lake were 64×10~4m~2and 699×10~4m~3,respectively before its outburst on June 15th in 1988.There was a water loss of 601.83×10~4 m~3 due to this outburst and the relative lake level decreased by 17.18 m.However,the out flow bed was still higher than the lake bottom so that there were still 97.17×10~4m~3 water volume in the lake after the outburst.In recent years,the lake area and volume have been continually increasing due to the increase of glacial melting water caused by climate warming.There is a less possibility of lake outburst according to present increasing rate of the lake area & volume.However,if the outflow of the lake is blocked or a large amount of external materials(glacier breakdown,landslide) were filled into the lake,the lake level will rise sharply and a new outburst will occur. |
|
来源
|
地理科学进展
,2012,31(9):1133-1140 【核心库】
|
|
关键词
|
藏东南
;
米堆冰湖
;
溃决
;
面积和水量
;
遥感
|
|
地址
|
1.
中国科学院青藏高原研究所, 中国科学院青藏高原环境变化与地表过程重点实验室, 北京, 100085
2.
西藏高原大气环境科学研究所, 拉萨, 850000
|
|
语种
|
中文 |
|
ISSN
|
1007-6301 |
|
学科
|
地球物理学;灾害及其防治 |
|
基金
|
中科院青藏高原环境变化与地表过程重点实验室开放课题
;
中国科学院知识创新工程重要方向项目
;
国家自然科学基金重点项目
|
|
文献收藏号
|
CSCD:4631697
|
参考文献 共
30
共2页
|
|
1.
Bajracharya B. Glacial lake outburst floods in the Sagarmatha region.
Mountain Research and Development,2007,27(4):336-344
|
被引
8
次
|
|
|
|
|
2.
Richardson S D. An overview of glacial hazards in the Himalayas.
Quaternary International,2000,65/66(1):31-47
|
被引
64
次
|
|
|
|
|
3.
铁永波. 冰湖溃决评价体系研究进展.
水科学进展,2009,20(3):448-452
|
被引
9
次
|
|
|
|
|
4.
姚治君. 青藏高原冰湖研究进展及趋势.
地理科学进展,2010,29(1):10-14
|
被引
14
次
|
|
|
|
|
5.
崔鹏. 冰湖溃决泥石流的形成、演化与减灾对策.
第四纪研究,2003,23(6):621-628
|
被引
55
次
|
|
|
|
|
6.
Osti R. Hydrodynamic characteristics of the Tam Pokhari Glacial Lake outburst flood in the Mt. Everest region, Nepal.
Hydrological Processes,2009,23(20):2943-2955
|
被引
9
次
|
|
|
|
|
7.
刘淑珍. 西藏自治区洛扎县冰湖溃决危险度评价.
山地学报,2003,21(B12):128-132
|
被引
10
次
|
|
|
|
|
8.
王欣. 我国喜马拉雅山区冰碛湖溃决危险性评价.
地理学报,2010,64(7):782-790
|
被引
1
次
|
|
|
|
|
9.
McKillop R J. Statistical, remote sensing-based approach for estimating the probability of catastrophic drainage from moraine-dammed lakes in southwestern British Columbia.
Global and Planetary Change,2007,56(1/2):153-171
|
被引
21
次
|
|
|
|
|
10.
McKillop R J. A procedure for making objective preliminary assessments of outburst flood hazard from moraine-dammed lakes in southwestern British Columbia.
Natural Hazards,2007,41(1):131-157
|
被引
12
次
|
|
|
|
|
11.
车涛. 近20 a来西藏朋曲流域冰湖变化及潜在溃决冰湖分析.
冰川冻土,2004,26(4):397-402
|
被引
46
次
|
|
|
|
|
12.
Chalise S R. Glacio-hydrological aspects of climate change in the Himalayas: mitigation of glacial lake outburst floods in Nepal.
Regional Hydrological Impacts of Climatic Change-Impact Assessment and Decision Making. 295,2005:309-316
|
被引
1
次
|
|
|
|
|
13.
Harrison S. A glacial lake outburst flood associated with recent mountain glacier retreat, Patagonian Andes.
Holocene,2006,16(4):611-620
|
被引
6
次
|
|
|
|
|
14.
Ng F. Climatic control on the peak discharge of glacier outburst floods.
Geophysical Research Letters,2007,34:L21503
|
被引
3
次
|
|
|
|
|
15.
程尊兰. 藏东南冰湖溃决泥石流灾害及其发展趋势.
冰川冻土,2008,30(6):954-959
|
被引
30
次
|
|
|
|
|
16.
徐道明. 西藏喜马拉雅山区危险冰湖及其溃决特征.
地理学报,1989,44(3):343-352
|
被引
54
次
|
|
|
|
|
17.
吕儒仁.
西藏泥石流与环境,1999:69-105
|
被引
19
次
|
|
|
|
|
18.
李德基. 西藏波密米堆冰湖溃决浅议.
山地学报,1992,10(4):219-224
|
被引
8
次
|
|
|
|
|
19.
余忠水. 西藏波密天摩沟"9·4"特大泥石流形成的气象条件.
山地学报,2009,27(1):82-87
|
被引
6
次
|
|
|
|
|
20.
刘晶晶. 西藏冰湖溃决主要特征.
灾害学,2008,23(1):55-60
|
被引
15
次
|
|
|
|
|
了解气象卫星更多信息，请访问