青藏高原近30年现代雪线遥感调查  

Remote Sensing Survey of Existing Snowlines in the Past 30 Years in Qinghai-Tibet Plateau

作　　者：张瑞江[1] 赵福岳[1] 方洪宾[1] 曾福年[1] 

机构地区：[1]中国国土资源航空物探遥感中心,北京100083

出　　处：《国土资源遥感》2010年第B11期59-63,共5页Remote Sensing for Land & Resources

基　　金：中国地质调查局地质调查项目"青藏高原生态地质环境遥感调查与监测"(编号:1212010510218)

摘　　要：通过对青藏高原现代冰川分布区ETM遥感图像的分析研究，提出了利用遥感图像确定现代雪线高度的方法；基本查明了青藏高原各山系的现代雪线高度，以及近30a来现代雪线高度的变化状况。调查结果显示：青藏高原现代雪线高度在4000～6000m，并呈现自东向西逐渐升高的分布规律；青藏高原现代雪线有上升、下降和基本不变3种变化方式，以上升为主，且与现代冰川的演变关系密切。Based on the study and analysis of ETM images of glacier distribution in Qinghai - Tibet Plateau, this paper puts forward a new method for ascertaining the altitudes of existing snowlines. With this method, the altitudes of existing snowlines in different ridges of Qinghai - Tibet Plateau as well as the variations of existing snowlines from the middle of the 1960＇ s approximately to the 2000＇ s were detected. The investigation results show that the altitudes of existing snowlines in Qinghai - Tibet Plateau range between 4 000 m and 6 000 m. The snowlines ascend gradually from the east to the west of Qinghai - Tibet Plateau. There are three ways of the variation of existing snowlines in Qinghai -Tibet Plateau： rising, lowering and basic stableness, with the rising of the existing snowlines in Qinghai - Tibet Plateau being dominant. The change of existing snowlines is closely related to the evolution of existing glaciers.

关 键 词：现代雪线 遥感调查 青藏高原 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]