摘要
通过野外地质调查和地球观测卫星同步跟踪预接收遥感信息资料,对察尔汗盐湖1989年夏秋之交暴发的特大洪水进行洪水特征、洪水效应、洪水周期以及洪水事件、洪水成盐、洪水控制等方面的系统研究,对盐湖地区的洪水评价及资源开发具有重要意义。
Charhan Salt lake,locating in the middle of Qaidamu basin,consists of the shallow de-pression which is fed by phreatic water and outside water system,and salt marsh.Its areas is5856km, and the highest ratio of solid/liquid of salt mineral resorces is 1/3.46,thelowest 1/1.28.The salt-out action is a typical process of charhan lake,and so it is a 'live'min-eral. In this paper,the property and effect of catastrophic flood that have occured in 1989 isstudied by satelliate remote image and field exploration.The flood is the largest one since thereare a hydrologic record and have made the lake expension,desalination and karst.Germu riverWhose 70%water flows into the lake is the cause of the flood. The data of hydrology and me-teorology in Germu river during past 28year shows that bigger flood (about 300±m/S) inthearea will occur with the interval of 7or8year,and the Catastrophic flood is about 300 year.The author Considers that the flood over 200m/S will occur for 2to 3times and that of500m/S occur 1 times in the next decade. The Suggestion of studing the dynamic balances of the flood-salt lake by using remoteSensing methods are proposed.
出处
《干旱区地理》
CSCD
北大核心
1991年第2期41-47,共7页
Arid Land Geography
