本数据以SRTM30米分辨率DEM数据为数据源，进行数据拼接、重采样等影像处理，再利用黄河流域区域边界裁剪，生成空间分辨率为30m的黄河流域区域DEM数据产品。该数据可为黄河流域区域科学研究提供基础地理数据支持。
", "ds_source": "黄河流域30m分辨率DEM数据来自NASA的SRTM v41 1s数据，该数据目前由USGS免费分发，可以从USGS FTP站点免费下载。
", "ds_process_way": "利用Python程序进行影像拼接、重采样；按照渭河流域边界为研究区域进行裁剪，生成黄河流域30米DEM数据产品。
", "ds_quality": "对源数据进行重采样，数据质量良好。SRTM DEM数据的垂直误差小于16 m。
", "ds_acq_start_time": "2000-01-01 00:00:00", "ds_acq_end_time": "2000-12-31 00:00:00", "ds_acq_place": "黄河流域", "ds_acq_lon_east": 119.345, "ds_acq_lat_south": 32.84166666666667, "ds_acq_lon_west": 95.88194444444444, "ds_acq_lat_north": 41.84388888888889, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 1220045029, "ds_files_count": 6, "ds_format": "栅格", "ds_space_res": "30米", "ds_time_res": "年", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "11a743d6-8340-4d14-a0ac-b5e6ab6224d5.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "b412fac3-1f10-4eb6-9d10-c51bcea30d0c", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.YRiver.db1677.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-02-24 14:33:33", "last_updated": "2025-05-29 11:43:01", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.YRiver.db1677.2022", "i18n": { "en": { "title": "Data of 30 meter resolution digital elevation model (DEM) in the Yellow River Basin", "ds_format": "Raster", "ds_source": "The 30m resolution DEM data of the Yellow River Basin is derived from NASA's SRTM v41 1s data, which is currently freely distributed by the USGS and can be downloaded for free from the USGS FTP site.
", "ds_quality": "The source data was resampled, and the data quality is good. The vertical error of the SRTM DEM data is less than 16 meters.
", "ds_ref_way": "", "ds_abstract": "This dataset uses SRTM 30-meter resolution DEM data as the data source. It undergoes image processing such as data mosaicking and resampling. Then, it is cropped using the regional boundary of the Yellow River Basin to generate a DEM data product for the Yellow River Basin region with a spatial resolution of 30m. This data can provide basic geographic data support for scientific research in the Yellow River Basin region.
", "ds_time_res": "年", "ds_acq_place": "Yellow River Basin", "ds_space_res": "30米", "ds_projection": "", "ds_process_way": "The Python program was used for image mosaicking and resampling. Clipping was performed according to the boundary of the Weihe River Basin as the study area to generate a 30-meter DEM data product for the Yellow River Basin.
", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 0, "license_type": "https://creativecommons.org/licenses/by/4.0/", "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": [ "黄河流域", "DEM" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黄河流域" ], "ds_time_tags": [ 2000 ], "ds_contributors": [ { "true_name": "张耀南", "email": "yaonan@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "李红星", "email": "lihongxing@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "敏玉芳", "email": "myf@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "基础地理" }