本数据以SRTM 30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，再利用渭河流域区域边界裁剪，生成空间分辨率为30m的渭河流域区域DEM数据产品。\n
\n该数据可为渭河流域区域科学研究提供基础地理数据支持。", "ds_source": "
渭河流域30 m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，生成渭河流域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": "渭河流域", "ds_acq_lon_east": 110.27444444444444, "ds_acq_lat_south": 33.69611111111111, "ds_acq_lon_west": 103.9713888888889, "ds_acq_lat_north": 37.40833333333333, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 246356566, "ds_files_count": 2, "ds_format": "tif", "ds_space_res": "30米", "ds_time_res": "年", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "3fb2de30-3b6f-4cab-9635-661b5fc836dd.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "0d5fea4e-6fd7-4c70-b28b-3f91204c579a", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2021-09-28 17:34:02", "last_updated": "2025-05-29 11:35:55", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.WRiver.2021.7", "i18n": { "en": { "title": "Digital Elevation Model (DEM) data with 30-meter resolution for the Weihe River Basin", "ds_format": "tif", "ds_source": "
The 30 m resolution DEM data for the Weihe River Basin are from NASA's SRTM v41 1s data, which is currently distributed free of charge by the USGS and can be downloaded for free from the USGS FTP site.", "ds_quality": "
The source data were resampled and the data quality is good. the vertical error of the SRTM DEM data is less than 16 m. The data were resampled and the data quality was good.", "ds_ref_way": "", "ds_abstract": "
This data uses SRTM 30-meter resolution DEM data as the data source, performs image processing such as data splicing and resampling, and then utilizes the Weihe River Basin regional boundary cropping to generate the Weihe River Basin regional DEM data product with a spatial resolution of 30m.\n
\nThis data can provide basic geographic data support for scientific research in the Weihe River Basin region.
", "ds_time_res": "年", "ds_acq_place": "Weihe River Basin", "ds_space_res": "30米", "ds_projection": "", "ds_process_way": "The Python program was used for image stitching and resampling; cropping was performed according to the Weihe River Basin boundary for the study area, and the Weihe River Basin 30-meter DEM data products were generated.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "ds_topic_tags": [ "渭河流域", "DEM" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "渭河流域" ], "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" }