1987-2017年青海湖水体边界数据集  

A dataset of Qinghai Lake water body periphery during 1987–2017

作　　者：郝美玉[1] 罗泽[1] HAO Meiyu;LUO Ze(Computer Network Information Center,Chinese Academy of Science,Beijing 100190,P.R.China)

机构地区：[1]中国科学院计算机网络信息中心,北京100190

出　　处：《中国科学数据（中英文网络版）》2021年第1期193-199,共7页China Scientific Data

基　　金：中国科学院信息化专项(XXH13505-03-205);国家科技部国家科技基础条件平台项目(DKA2019-12-02-18)。

摘　　要：本研究基于地理空间数据分析云平台Google Earth Engine(GEE),使用Landsat影像进行像元级融合,重构目标年份最小云量影像集。基于水体指数方法,经过人工修正和精度验证,获得了1987–2017年11期青海湖水体边界数据集。数据集时间序列较长且包含湖泊面积等属性信息,可作为湖泊时空变化、湖泊水量变化评估的基础数据,也可作为水资源变化、湖泊与气候变化相应等研究的重要依据。In terms of Google Earth Engine(GEE)platform,we adopted the method of image composite and use Landsat historical images to generate seasonal images with lowest cloud composite at the pixel level.Based on a water index method and correctness procedure,we obtained 11 series of Qinghai Lake water body periphery during 1987–2017 in this research through manual modification and validation by making use of generated seasonal image data.The dataset has a long time series and geometric properties of the lake,which can be used as the basic data for assessing the temporal-spatial changes of the lake and the changes in water capacity of the lake.In addition,it can also be used as an important reference for the research on changes of water resource,the relationship between climate change and lakes.

关 键 词：青海湖 水体边界 面积变化 

分 类 号：P343.3[天文地球—水文科学]