{"id":"af0cfac0-a2e8-4cc6-b76d-46c6b4f38946","title":"九寨沟西番沟泥石流DEM数据（2019-2021）","title_en":"DEM data of Jiuzhaigou Xifan gully debris flow (2019-2021)","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":"文件命名：数据以.tif格式存储，文件的名称为“Xifangou_dem.tif”，其中Xifangou代表泥石流沟名称，dem代表数据类型，比如Xifangou_dem.tif就代表西番沟泥石流的DEM数据。\n\n数据读取方式：该数据集中的所有文件可以用ArcGIS、Photoshop等打开。","description":"该数据为九寨沟西番沟泥石流的DEM数据，采用飞马V10无人机搭载RIEGL VUX-1LR机载激光雷达系统获取，通过机载激光雷达技术去除植被后生成的DEM数据，能得到真实的地表形态为泥石流物源的识别与计算提供新的解决方案；数据采用芬兰 Arttu Soininen 工程师开发的TerraSolid软件，通过形成宏命令经点云去噪、滤波、分类后，获取研究区真实地表点云数据，进而利用分类出的地面点构建了高精度数字高程模型；获取的激光点云数据平均密度优于50点/m2，数字高程模型分辨率为0.5m，坐标系为CGCS2000国家坐标系，1985国家高程基准；基于机载LiDAR数据开展泥石流物源识别与计算工作，根据物源所处的位置以及在山体阴影图像上的色彩及纹理差异，将物源分为崩滑物源、坡面物源和沟道物源并建立各类型物源的机载LiDAR识别标志与遥感解译方法，为泥石流物源的精确计算提供理论参考和数据支撑，进一步服务于泥石流的防治与风险评价。","doi":"10.11888/RemoteSen.tpdc.272011","projection":"GCS_China_Geodetic_Coordinate_System_2000","language":"zh","share_type":"protected","east":104.17,"west":104.09,"south":33.25,"north":33.31,"scale":null,"crs":null,"filesize":1044.0,"share_policy":"a","ts_created":"2022-02-15T14:24:38.166223+08:00","doi_type":"拥有自主知识产权","ts_updated":"2022-02-15T16:03:37.558085+08:00","time_description":"2019.01-2021.12","datas_group":0,"time_description_en":"2019.01-2021.12","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"何思明","username":"何思明","email":"hsm@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":"--","spatial_resolution":"<= 1 m","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[],"subtopics":{"metadata":"af0cfac0-a2e8-4cc6-b76d-46c6b4f38946","three_pole":null,"third_pole":null},"username":"胡桂胜","review_time":null,"protected_duration":24,"protected_describe":null,"is_important":false,"hit_count":110}