{"id":"a0c9b7cb-3184-4214-990d-76dc27aa2722","title":"InSAR识别的青藏高原泛三江并流区活动性滑坡（2007-2019）","title_en":"Active landslides by InSAR recognition in Three-River-Parallel territory of  Qinghai-Tibet Plateau (2007-2019)","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"数据以KMZ格式存储，命名为规则：区域名称+获取方式+灾害数据类型+\".KMZ\"后缀。\n使用方法：该格式为开发共享格式，Google Earth；ArcGIS等 网络或单机的GIS软件均可调用。","description":"针对青藏高原泛三江并流区的17.9万km2的区域，通过Sentinel-1升降轨，以及Palsar-1升轨三种SAR数据进行InSAR变形观测，根据获取的InSAR变形图像，结合地貌和光学影像特征进行综合解译。共识别得到海拔4000m以下的活动性滑坡949处。需要注意的是，因不同SAR数据的观测角度、敏感度和观测时相的差异，同一滑坡用不同数据解译存在一定的差异，在滑坡的范围、边界方面需要借助地面和光学影像进行修正。滑坡InSAR识别比例尺的概念与传统空间分辨率不同，主要依靠变形强度，因此一些规模较小，但与背景相比变形特征突出，整体性强，与地物具有逻辑空间关系的滑坡也能得以解译（配合SAR的强度图、地形阴影图、光学遥感影像为地物参照）。本次最小解译区域可达几个像素，如参考怒江沿江公路解译了一处只有4个像素的公路边坡滑坡。","doi":"10.11888/Atmos.tpdc.272162","projection":"WGS84","language":"zh","share_type":"offline","east":101.0,"west":96.0,"south":26.0,"north":32.0,"scale":null,"crs":null,"filesize":0.19,"share_policy":"c","ts_created":"2022-03-19T14:55:50.358117+08:00","doi_type":"拥有自主知识产权","ts_updated":"2022-03-21T16:11:42.758432+08:00","time_description":"2007-2019","datas_group":0,"time_description_en":"2007-2019","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"胡桂胜","username":"2018YFC1505202","email":"huguisheng@imde.ac.cn","is_cancel_expert":false}],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"10m - 100m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[789],"subtopics":{"metadata":"a0c9b7cb-3184-4214-990d-76dc27aa2722","three_pole":null,"third_pole":null},"username":"姚鑫","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":90}