基于ICESat-2的纳木错湖泊变化监测

Monitoring of Lake Change in Namtso Based on ICESat-2

本研究旨在利用ICESat-2激光雷达数据和MODIS卫星数据,对纳木错湖泊的水位变化和湖泊面积进行监测和分析。通过对2018年10月至2020年11月期间的多个时间点的高程数据进行比对,发现纳木错湖泊的水位呈现缓慢上升趋势;此外,本研究利用MODIS数据分析了湖泊面积的时空变化,得出了在2018年到2020年的表面积变化;在细致研究中发现湖泊变化趋势具有季节性变化;通过深入分析发现,纳木错湖泊的变化受包括气候变化、降水量、融水量以及人类活动等因素影响。

In this study,ICESat-2 LiDAR data and MODIS satellite data were used to monitor and analyze the water level change and lake area of Namtso Lake.By comparing the elevation data of several time points from October 2018 to November 2020,it is found that the water level of Namtso Lake shows a slow rising trend.In addition,MODIS data is used to analyze the temporal and spatial changes of the lake area,and the surface area changes from 2018 to 2020 are obtained.In the detailed study,it is found that the trend of lake change has seasonal changes.Through in-depth analysis,it is found that the changes of Namtso Lake are caused by climate change,precipitation,meltwater and human activities.