{"id":"8be78218-8512-4064-9cbd-adce6b998e17","title":"黑河综合遥感联合试验：预试验期扁都口加密观测区地表粗糙度数据集","title_en":"WATER: Dataset of surface roughness measurements in the Biandukou foci experimental area during the Pre-observation Period","serial":"黑河综合遥感联合试验","user_limit":"本数据由“黑河综合遥感联合试验”产生，用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。","instructions":null,"description":"本数据包括上游寒区预试验时扁都口样方1和扁都口样方2中各采样点的粗糙度测量原始照片，及表面高度标准离差（cm）和相关长度（cm）的计算结果。每个采样点均按照南北向和东西向分别测量1次，粗糙度板长110cm，测量点间距1cm。扁都口各样方均为3Grid×3Grid，每个Grid均为30m×30m。\n粗糙度数据通过数码照相采集，然后在ArcView软件下，对照片中每根辐条的顶端以及板子的四角做手工数字化采样，获得其图像坐标值，经过几何校正后，计算得到每根辐条的高度，然后按公式计算表面高度标准离差和表面相关长度。其计算公式见《微波遥感》第二卷234-236页。\n粗糙度数据文件中，首先是样点名称，之后数据正文包括4列（编号、文件名、标准离差、相关长度）。每一个文件名，即txt文件对应一张采样照片，标准离差（cm）与相关长度（cm）即代表了粗糙度。之后是每张照片中101根辐条的长度，属于中间结果，用以检查校正。\n本数据可为发展和验证微波遥感算法提供基本数据。","doi":"10.3972/water973.0186.db","projection":"4326","language":"zh","share_type":"online","east":101.036,"west":100.881,"south":38.192,"north":38.312,"scale":null,"crs":null,"filesize":197.7,"share_policy":"a","ts_created":"2013-10-16T14:41:00+08:00","doi_type":null,"ts_updated":"2021-04-19T17:24:53.194445+08:00","time_description":null,"datas_group":3,"time_description_en":null,"data_format":"EXCEL","project":[10,11,15],"specials":["2ee7e876-6f20-43a7-9c6c-979840a33ef2","a287b225-86f7-4583-9e92-c05b6d3036bc","6740cd00-6d20-4855-a39b-863af216b0a2","4e7b97a6-ee1f-4b51-83e5-04a100993973"],"cite":"晋锐, 曹永攀, 钞振华, 车涛, 秦春, 吴月茹. 黑河综合遥感联合试验：预试验期扁都口加密观测区地表粗糙度数据集. 中国科学院寒区旱区环境与工程研究所. 2008. doi:10.3972/water973.0186.db [Jin Rui, Cao Yongpan, Chao Zhenhua, Che Tao, Qin Chun, Wu Yueru. WATER: Dataset of surface roughness measurements in the Biandukou foci experimental area during the pre-observation period. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences. 2008. doi:10.3972/water973.0186.db]","review_status":5,"review_invite":[],"review_editor":null,"data_sources":null,"temporal_resolution":null,"spatial_resolution":null,"license":null,"fund":[35,36],"subtopics":null,"username":"盖春梅","review_time":null,"protected_duration":6,"protected_describe":null,"is_important":false,"hit_count":11949}