{"id":"e467c201-87e3-43ba-a4b1-ec6458e44550","title":"黑河流域高程地貌-坡向（2013-2016）","title_en":"Elevation geomorphology slope direction of Heihe river  (2013-2016)","serial":"黑河计划","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":"数据以栅格tif格式存储，可用Arcgis、Qgis等遥感软件打开读取","description":"采用黑河计划数据管理中心提供的黑河流域30米分辨率的ASTER GDEM数据和90米分辨率的SRTM数据两组栅格数据，以及多来源的点数据。利用HASM升尺度算法，将不同来源和不同精度的栅格数据与高程点数据进行融合，获得黑河流域的高精度坡向数据。首先利用各种点数据对两组栅格数据进行精度验证，根据精度验证的结果，在不同的区域，采用不同的栅格数据作为数据融合的趋势面。计算各样点数据与趋势面的残差，运用HASM算法进行插值获得残差曲面，将趋势面与残差曲面叠加，从而获得最终的坡向曲面。空间分辨率为500米。","doi":"","projection":null,"language":"zh","share_type":"offline","east":101.5,"west":98.0,"south":38.0,"north":42.0,"scale":null,"crs":null,"filesize":1.0,"share_policy":"b","ts_created":"2016-12-22T19:23:31+08:00","doi_type":"国际公开共享数据","ts_updated":"2021-04-19T22:25:09.821203+08:00","time_description":"","datas_group":0,"time_description_en":"","data_format":"img","project":[10,11],"specials":[],"cite":null,"review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":"Yearly","spatial_resolution":"100m - 1km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"e467c201-87e3-43ba-a4b1-ec6458e44550","three_pole":null,"third_pole":null},"username":"盖春梅","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":3287}