本数据集包含1个阿姆河-锡尔河-楚河产流区数字高程数据；本数据是基于CGIAR-CSI 90m SRTM数据（第4版），经过重投影和格式转换处理得到的，空间分辨率90米，投影坐标为Pulkovo_1942_Transverse_Mercator，数据以img格式存储。数据反映了中亚阿姆河-锡尔河-楚河产流区范围内的高程分布和地形。
", "ds_source": "数据来自国际农业研究咨询组织空间咨询团体(CGIAR-CSI)(http://srtm.csi.cgiar.org/)的SRTM 90m Digital Elevation Data。SRTM 90m Digital Elevation Data数据集（第4版）是基于美国宇航局发布并由美国地质调查局通过ftp访问分发的3级弧秒SRTM数据制作的（ftp//edcsgs9.cr.usgs.gov/pub/data/srtm/version1/）。CGIAR-CSI SRTM数据集对NASA数据进行了后处理，以通过插值技术“填补”无数据空白。其结果是无缝、完整地覆盖全球的海拔。\nSRTM 90m Digital Elevation Data数据集引用方式：Jarvis A., H.I. Reuter, A. Nelson, E. Guevara, 2008, Hole-filled seamless SRTM data V4, International Centre for Tropical Agriculture (CIAT), available from https://srtm.csi.cgiar.org. 参考文献引用：Reuter H.I, A. Nelson, A. Jarvis, 2007, An evaluation of void filling interpolation methods for SRTM data, International Journal of Geographic Information Science, 21:9, 983-1008.\n
", "ds_process_way": "以5°×5°图块大小，Geo TIFF文件格式下载阿姆河-锡尔河-楚河产流区范围的DEM数据，数据地理坐标系-WGS84；使用ARCGIS软件工具对下载的数据进行重投影生成Pulkovo_1942_Transverse_Mercator的数据，结果数据以img格式存储。
", "ds_quality": "数据分类满足SWAT模拟需要，精度高，地形和水系勾画清晰，高程分布准确。
", "ds_acq_start_time": "2008-01-01 00:00:00", "ds_acq_end_time": "2008-12-31 00:00:00", "ds_acq_place": "阿姆河-锡尔河-楚河产流区", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 128830369, "ds_files_count": 1, "ds_format": "img", "ds_space_res": "90", "ds_time_res": "无", "ds_coordinate": "WGS84", "ds_projection": "Pulkovo_1942_Transverse_Mercator", "ds_thumbnail": "42be5167-6aed-4936-bd49-2b3fd1f7740e.jpg", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "a5877b42-96ea-4f13-af7e-246f355413d6", "doi_value": "", "subject_codes": [ "170.40" ], "quality_level": 1, "publish_time": "2025-03-27 17:55:02", "first_publish_time": null, "last_updated": "2025-03-27 17:55:02", "protected": false, "protected_to": null, "lang": "zh", "cstr": "33110.11.ariddc.00136", "license": null, "extra": null, "files_shape": [ { "name": "2008年中亚河流产流区DEM数据集.rar", "size": 128830369, "is_dir": false } ], "features": null, "data_level": 0, "i18n": { "en": { "title": "90-meter DEM dataset from the runoff area of the Central Asia River in 2008", "ds_abstract": "This dataset contains one digital elevation data of the Amu Darya-Syr Darya-Chu River current-producing area; this data is based on CGIAR-CSI 90m SRTM data (version 4), obtained through reprojection and format conversion. The spatial resolution is 90 meters, the projection coordinates are Pulkovo_1942_Transverse_Mercator, and the data is stored in img format. The data reflects the elevation distribution and topography within the Amu Darya-Syr Darya-Chu River current-producing area in Central Asia.
", "ds_source": "Data comes from SRTM 90m Digital Elevation Data from the Space Advisory Group of the International Agricultural Research Advisory Group (CGIAR-CSI)(http://srtm.csi.cgiar.org/). The SRTM 90m Digital Elevation Data dataset (version 4) is based on level 3 arc-second SRTM data released by NASA and distributed via ftp access by the U.S. Geological Survey (ftp//edcsgs9.cr.usgs.gov/pub/data/srtm/version1/). The CGIAR-CSI SRTM dataset post-processes NASA data to \"fill\" no data gaps through interpolation techniques. The result is seamless and complete coverage of global elevations.\nSRTM 90m Digital Elevation Data dataset referenced by Jarvis A., H.I. Reuter, A. Nelson, E. Guevara, 2008, Hole-filled seamless SRTM data V4, International Centre for Tropical Agriculture (CIAT), available from https://srtm.csi.cgiar.org References cited: Reuter H.I, A. Nelson, A. Jarvis, 2007, An evaluation of void filling interpolation methods for SRTM data, International Journal of Geographic Information Science, 21:9, 983-1008.\n
", "ds_process_way": "Download DEM data from the Amu Darya-Syr Darya-Chu River runoff area in a 5°×5° block size and Geo TIFF file format, with the data geographical coordinate system-WGS84; use the ARCGIS software tool to reproject the downloaded data to generate Pulkovo_1942_Transverse_Mercator data, and the resulting data is stored in img format.
", "ds_quality": "Data classification meets the needs of SWAT simulation, has high accuracy, clear terrain and water system delineation, and accurate elevation distribution.
", "ds_acq_place": "Amu Darya-Syr Darya-Chu River current-producing area", "ds_format": "img", "ds_projection": "Pulkovo_1942_Transverse_Mercator", "ds_space_res": "90", "ds_time_res": "no" } }, "license_type": null, "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "数字高程模型", "DEM" ], "ds_subject_tags": [ "地图学" ], "ds_class_tags": [], "ds_locus_tags": [ "阿姆河", "锡尔河", "楚河" ], "ds_time_tags": [ 2008 ], "ds_contributors": [ "罗毅", "陈曦" ], "ds_meta_authors": [ "罗毅" ], "ds_managers": [ "李锦" ], "category": "DEM数字高程" }