{"id":"cb61c04f-91f5-4eb8-927b-56db8af5811a","title":"南极地表覆盖图（1999-2003）","title_en":"Surface cover map in the Antarctic (1999-2003)","serial":"地球大数据科学工程专项时空三极环境项目","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":"","description":"全南极高分辨率遥感影像镶嵌图利用美国陆地卫星7号于1999-2003年间拍摄的1073幅影像以及覆盖南纬82.5度以南的中分辨率MODIS影像（拍摄于2005年）处理合成得到。基于该镶嵌图，结合南极科研需求，采用计算机自动解译和人工辅助相结合的方法，将南极洲地表覆盖划分为6大类：蓝冰、裂隙、裸岩、水体、冰碛、粒雪。经统计得到上述各类的面积和所占比例分别为：225207.29平方千米（1.651%），7153.36平方千米（0.052%），72958.04平方千米（0.535%），189.43平方千米（0.001%），310.76平方千米（0.003%），13337392.66平方千米（97.758%）。该地图为近似真彩色合成的卫星影像图，各地表覆盖类型采用不同的色块表示。该图主要为极地各学科科学研究、地理教育及科普等提供参考。","doi":"10.11888/GlaciolGeocryo.tpe.00000049.file","projection":"","language":"zh","share_type":"online","east":360.0,"west":null,"south":-90.0,"north":-60.0,"scale":null,"crs":"","filesize":143.5,"share_policy":"a","ts_created":"2018-02-13T14:47:56+08:00","doi_type":"沿用数据已有DOI","ts_updated":"2021-04-19T21:46:48.819747+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":"shape","project":[10,11],"specials":["b4b306da-eab1-47ef-ae5d-be2556298efd"],"cite":"惠凤鸣. 南极地表覆盖图. 时空三极环境大数据共享与集成平台. 2018","review_status":5,"review_invite":[],"review_editor":{"id":21057,"last_login":"2022-04-02T11:43:37.753860+08:00","username":"gecm","email":"gechm@lzb.ac.cn","is_active":true,"is_staff":true,"user_name":"盖春梅"},"data_sources":"","temporal_resolution":"Yearly","spatial_resolution":"","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[5],"subtopics":{"metadata":"cb61c04f-91f5-4eb8-927b-56db8af5811a","three_pole":"XDA19070100","third_pole":null},"username":"","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":2321}