{"id":"7b522375-213f-460d-a569-2dd6f3e8b09c","title":"三江源、普尔河、育空河流域1960s锁眼卫星水体解译产品","title_en":"Surface water products based on Keyhole satellite about 1960s in The Three River Headwater region, Pul and Yukon River Basins","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":"本数据产品为矢量文件（.shp），可使用Arcgis 10.0以上版本打开。属性表中包含有分类类别（classID:11、12、13，依次对应className：河流、湖泊、冰川。）命名格式为：流域缩写_1960s，三江源（SJY）、普尔河（Sib）、育空河（Yuk）流域，采用UTM-WGS84投影，依次对应N47、N43、N7分区。","description":"基于20世纪60年代的锁眼卫星数据，采用面向对象的监督分类，结合人工目视解译修正，生产出水体数据产品。总解译面积64.5万km2，占研究区96.28%，其中三江源研究区影像缺失18844 km2，阿拉斯加育空流域研究区影像缺失4220 km2，西西伯利亚普尔河流域研究区影像缺失1954 km2。解译最小线状地物图上宽度大于8米，最小面状地物图上面积大于100平方米，描迹精度2个象元，一级类解译精度达到95%以上。获取的高空间分辨率水体数据产品，为上世纪70年代水体变化研究提供有效数据，也为冻土变化研究提供可靠依据。","doi":"10.11888/Hydro.tpdc.270956","projection":"WGS84","language":"zh","share_type":"online","east":104.0,"west":89.0,"south":31.0,"north":37.0,"scale":null,"crs":null,"filesize":460.0,"share_policy":"a","ts_created":"2019-10-28T21:59:45.564687+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-11-02T16:10:23.645809+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":null,"project":[10,11],"specials":["1832ecb3-70d0-4b5e-bdb5-2e9ff4ad1efe"],"cite":null,"review_status":5,"review_invite":[],"review_editor":{"id":21056,"last_login":"2022-02-09T12:02:24.544987+08:00","username":"huxiaoli","email":"huxiaoli@lzb.ac.cn","is_active":true,"is_staff":true,"user_name":"胡晓利"},"data_sources":"","temporal_resolution":"1 year < x < 10 year","spatial_resolution":"m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[5],"subtopics":{"metadata":"7b522375-213f-460d-a569-2dd6f3e8b09c","three_pole":"XDA19070204","third_pole":null},"username":"苏阳","review_time":"2019-10-28T22:40:56.497166+08:00","protected_duration":24,"protected_describe":"内部共享之后正式共享","is_important":false,"hit_count":2713}