本数据集基于SRTM（2000年）和ZY3-02（2020年）数据，利用不同时期DEM数据，获取了喀喇昆仑山地区洪扎河流域冰川表面高程变化。2000-2020年，喀喇昆仑山洪扎河流域冰川表面高程呈显著减薄状态，平均变化为-5.48±0.39 m。本数据集为喀喇昆仑山地区水资源评价、冰川水文研究提供了基础数据。", "ds_source": "
1. SRTM\n 空间分辨率为1″的SRTM DEM数据，下载地址:http://imagico.de/map/demsearch.php。\n
2. 资三立体像对\n 采购的地面分辨率为3.5 m的前视和后视影像，以构成立体像对，提取DEM。", "ds_process_way": "
1. DEM提取：\n 资三立体相对提取DEM\n
2. DEM配准：\n 不同DEM之间的配置。\n 公式: dh=a * cos(b-φ)*tan(α)+ dh ̅", "ds_quality": "
通过DEM配准，非冰川区高程差从8.76m降低到0.76m。", "ds_acq_start_time": null, "ds_acq_end_time": null, "ds_acq_place": "喀喇昆仑山洪扎河流域", "ds_acq_lon_east": 75.75, "ds_acq_lat_south": 35.75, "ds_acq_lon_west": 72.5, "ds_acq_lat_north": 37.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 107509977, "ds_files_count": 5, "ds_format": "tif", "ds_space_res": "30m", "ds_time_res": "年", "ds_coordinate": "无", "ds_projection": "WGS_1984_UTM_Zone_43N", "ds_thumbnail": "76d5982d-6e9b-4159-8fd5-c4aa6d70215c.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "c6ac5c3c-eb4f-4119-86fb-c4534a9bd7fb", "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": "2023-05-05 17:55:35", "last_updated": "2025-05-29 16:26:13", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB2842.2023", "i18n": { "en": { "title": "Dataset of Glacier Surface Elevation Changes in the Hongzha River Basin of the Karakoram Mountains (2000-2020)", "ds_format": "tif", "ds_source": "
1. SRTM\nSRTM DEM data with a spatial resolution of 1 \", download link: http://imagico.de/map/demsearch.php .\n
2. Three dimensional image pairs\nProcure front and rear view images with a ground resolution of 3.5 meters to form a stereo image pair and extract DEM.", "ds_quality": "
Through DEM registration, the elevation difference in non glacial areas decreased from 8.76m to 0.76m.", "ds_ref_way": "", "ds_abstract": "
This dataset is based on SRTM (2000) and ZY3-02 (2020) data, and uses DEM data from different periods to obtain the surface elevation changes of glaciers in the Hongzha River Basin in the Karakoram Mountains region. From 2000 to 2020, the surface elevation of glaciers in the Hongzha River Basin of the Karakoram Mountains showed a significant thinning state, with an average change of -5.48 ± 0.39 m. This dataset provides basic data for water resource assessment and glacier hydrological research in the Karakoram Mountains region.
", "ds_time_res": "年", "ds_acq_place": "the Hunza basin in the Karakoram", "ds_space_res": "30m", "ds_projection": "WGS_1984_UTM_Zone_43N", "ds_process_way": "1. DEM extraction:\nRelative extraction of DEM from three-dimensional data\n
2. DEM registration:\nConfiguration between different DEMs.\nFormula: dh=a * cos (b - φ) * tan (α)+dh ̅", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 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": [ "冰川表面高程变化", "喀喇昆仑山", "洪扎河流域" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "喀喇昆仑山" ], "ds_time_tags": [ 2000, 2020 ], "ds_contributors": [ { "true_name": "吴坤鹏", "email": "wukunpeng2008@lzb.ac.cn", "work_for": "云南大学国际河流与生态安全研究院", "country": "中国" }, { "true_name": "刘时银", "email": "liusy@lzb.ac.cn", "work_for": "云南大学国际河流与生态安全研究院", "country": "中国" }, { "true_name": "朱钰", "email": "", "work_for": "中国科学院西北生态环境资源研究院", "country": "" } ], "ds_meta_authors": [ { "true_name": "吴坤鹏", "email": "wukunpeng2008@lzb.ac.cn", "work_for": "云南大学国际河流与生态安全研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "吴坤鹏", "email": "wukunpeng2008@lzb.ac.cn", "work_for": "云南大学国际河流与生态安全研究院", "country": "中国" } ], "category": "冰川" }