库雷-楚佳古堰塞湖的湖岸堤反映的湖面波动历史  

The History of Lake Surface Fluctuations Reflected in the Kulei-Chujia Ancient Dammed Lakeshore Levees

作　　者：姜胜凡 刘维明[2] 赖忠平 JIANG Sheng-fan;LIU Wei-ming;LAI Zhong-ping(School of Geographical Sciences,Qinghai Normal University,Xining 810008;Key Laboratory of Mountain Hazards and Surface Processes,Institute of Mountain Hazards and Environment,CAS,Chengdu 610041)

机构地区：[1]青海师范大学地理科学学院,西宁810008 [2]中国科学院水利部成都山地灾害与环塊研究所山地灾害与地表过程重点实验室,成都610041

出　　处：《四川地质学报》2021年第1期19-26,共8页Acta Geologica Sichuan

摘　　要：阿尔泰山高能洪水是地球上已知的最大的陆地淡水排放,洪水起源于库雷-楚佳盆地,至少发生过3次规模较大的高能洪水,卡通河下游广泛存在的洪水沉积物和库雷-楚佳盆地内的沙波等洪水沉积物,提供了大量的洪水证据。同时盆地内广泛存在大量的湖岸堤,如库雷盆地东南部和楚佳盆地北部,表明了库雷-楚佳冰堰湖复杂的湖面波动历史。本研究利用遥感解译、ArcGIS工具和Python编程对盆地内的湖岸堤进行海拔标定和库容计算,共解译湖岸堤123级,其中,楚佳盆地湖岸堤75级,库雷盆地55级,第一级湖岸堤海拔1534m,库容3.64km^(3);最高湖岸堤海拔2112m,代表湖泊的历史最高水位,库容691.322km^(3)。Altay high-energy floods are the largest known land freshwater discharge on the Earth.The floods were started in the Kulei-Chujia basin where there have been at least three large-scale high-energy floods.Widespread flood deposits in the lower Katong River and sand wave and other flood sediments in the Kulei-Chujia basin provides plenty of flood evidence.A large number of lakeshore levees exist widely in the basin which reflects complicated history of lake surface fluctuations of the Kulei-Chujia ancient dammed lake.This study estimates the elevation above sea level and storage capacity of 123 levels of lakeshore levees based on remote sensing interpretation,ArcGIS and Python programming.The first level of the lakeshore levees is 1534 m above sea level and has a capacity of 3.64 km^(3) and the highest level of the lakeshore levees is 2112 m above sea level and has a capacity of 691.322 km^(3).

关 键 词：库雷-楚佳古堰塞湖 湖岸堤 遥感解译 库容 晚更新世 

分 类 号：K903[历史地理—人文地理学]