本数据集基于SRTM（2000年）和ZY3-02（2019年）数据，利用不同时期DEM数据，获取了喀喇昆仑山地区Rimo冰川表面高程变化。2000-2019年，喀喇昆仑山Rimo冰川表面高程呈显著减薄状态，平均变化为 -5.04±0.89 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": "2000-01-01 00:00:00", "ds_acq_end_time": "2019-12-31 00:00:00", "ds_acq_place": "喀喇昆仑山Rimo冰川", "ds_acq_lon_east": 77.75, "ds_acq_lat_south": 35.0, "ds_acq_lon_west": 77.0, "ds_acq_lat_north": 35.75, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 5902473, "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": "c2fd5878-cb5e-4de2-98bb-44dcc7102245.png", "ds_thumb_from": 2, "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 17:55:41", "last_updated": "2023-06-20 17:29:06", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB2843.2023", "i18n": { "en": { "title": "Data Set on Surface Elevation Changes of Rimo Glacier in the Karakoram Mountains (2000-2019)", "ds_format": "", "ds_source": "
<p> 1. Name of Data\n DH_Karakoram_Rimo_20002019.tif\n2. Data description of attribute items \n XY Coordinate System: WGS_1984_UTM_Zone_43N\n Resolution: 30m", "ds_quality": "
<p> the mean elevation difference in non-glaciated regions decreased from 8.76 m to 0.76 m.\n <p> The data set is surface elevation change of Rimo Glacier in Karakoram, which acquired from SRTM and ZY3-02 images, using DEM differencing. The surface elevation of glaciers in the Hunza basin in the Karakoram decreased significantly from 2000 to 2019, with an average change of -5.04±0.89 m.The current data set provided fundamental data for water resource evaluation, and gacier hydrology research in the Karakoram.\n <p> 1. DEM extraction：\n Based on a tri-epipolar method, the ZY3-02 DEMs were generated through dense tri-stereo matching by the Space Data Processor software\n2. DEM co-registration：\n According to the cosinusoidal relationship between elevation difference, terrain slope and terrain aspect in non-glaciated regions, relative horizontal and vertical shift between SRTM DEM and ZY3-02 DEM were corrected.\n formula: dh=a * cos(b-φ)*tan(α)+ dh ̅", "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": [ "冰川表面高程变化", "喀喇昆仑山", "Rimo冰川" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "喀喇昆仑山" ], "ds_time_tags": [ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 ], "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" } ], "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" }