基于2021年1月至2021年12月间覆盖目标区域典型冰川的Sentinel-1干涉宽幅（IW）SAR影像, 采用偏移量跟踪技术，对斯瓦尔巴德群岛的冰川表面流速开展监测与分析，得到了2021年Svalbard 冰川表面平均流速数据（冰川表面平均速度.tif）、距离累积形变数据(time1_time2.real.tif)和方位累积形变数据(time1_time2.imag.tif)，数据空间范围为东经10.000°-29.999°，北纬76.000°-81.000°。
", "ds_source": "来源于欧空局哨兵1号SAR数据。
", "ds_process_way": "基于欧空局哨兵1号SAR数据的轨道信息、外部地形数据以及SAR成像几何关系模型，分别计算得到复杂地形对距离向和方位向拟合残差的影响, 在包含冰川运动信息的距离向和方位向拟合残差中分别消除计算得到的地形影响，进而得到准确的冰川表面运动分布信息。
", "ds_quality": "数据质量良好。
", "ds_acq_start_time": "2021-01-01 00:00:00", "ds_acq_end_time": "2021-12-31 00:00:00", "ds_acq_place": "斯瓦尔巴德群岛", "ds_acq_lon_east": 29.99888888888889, "ds_acq_lat_south": 76.0, "ds_acq_lon_west": 10.0, "ds_acq_lat_north": 81.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 66970245589, "ds_files_count": 179, "ds_format": "GeoTIFF", "ds_space_res": "20米", "ds_time_res": "15天", "ds_coordinate": "WGS84", "ds_projection": "GCS_WGS_1984", "ds_thumbnail": "93f907f8-ae52-439c-a584-e16007048ae2.jpg", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "2021年Svalbard 冰川表面InSAR数据结果存储格式为32 位浮点型 GeoTiff栅格数据， ArcMap等GIS软件或ENVI、PIE等软件均支持该数据的读取和操作，其中冰川流速数据单位为m/d。", "ds_from_station": null, "organization_id": "52b7b79b-860c-49a5-9083-9a70cf8bed5a", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "lihongxing@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170", "170.35", "170.3599" ], "quality_level": 3, "publish_time": "2024-12-23 17:37:24", "last_updated": "2025-04-29 14:53:34", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.GLACIER.DB6693.2024", "i18n": { "en": { "title": "Svalbard Glacier Surface Velocity and Deformation Remote Sensing Retrieval Dataset (2021)", "ds_format": "GeoTIFF", "ds_source": "Derived from the Sentinel-1 SAR data of the European Space Agency.
", "ds_quality": "The data quality is good.
", "ds_ref_way": "", "ds_abstract": "Based on Sentinel-1 interferometric wide swath (IW) SAR images covering typical glaciers in the target area from January 2021 to December 2021, offset tracking technology was used to monitor and analyze the surface flow velocity of glaciers in the Svalbard archipelago. The 2021 Svalbard glacier surface average flow velocity data (glacier surface average velocity. tif), distance cumulative deformation data (time1_time2. real. tif), and azimuth cumulative deformation data (time1_time2. imag. tif) were obtained, with a spatial range of 10.000 ° -29.999 ° E and 76.000 ° -81.000 ° N, respectively.
", "ds_time_res": "15天", "ds_acq_place": "Svalbard Archipelago", "ds_space_res": "20米", "ds_projection": "GCS_WGS_1984", "ds_process_way": "Based on the orbital information, external terrain data, and SAR imaging geometric relationship model of the European Space Agency Sentinel-1 SAR data, the influence of complex terrain on the fitting residuals in the distance and azimuth directions was calculated. The calculated terrain influence was eliminated in the fitting residuals in the distance and azimuth directions containing glacier motion information, and accurate glacier surface motion distribution information was obtained.
", "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" ], "ds_subject_tags": [ "地球科学", "大地测量学", "大地测量学其他学科" ], "ds_class_tags": [], "ds_locus_tags": [ "斯瓦尔巴德群岛" ], "ds_time_tags": [ 2021 ], "ds_contributors": [ { "true_name": "闫傲", "email": "yanao_99@163.com", "work_for": "中国地质大学（北京）", "country": "中国" }, { "true_name": "杨红磊", "email": "yanghonglei226@126.com", "work_for": "中国地质大学（北京）", "country": "中国" }, { "true_name": "刘友奉", "email": "jasonliuyf@163.com", "work_for": "中国地质大学（北京）", "country": "中国" }, { "true_name": "王泽平", "email": "447626218@qq.com", "work_for": "中国地质大学（北京）", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "闫傲", "email": "yanao_99@163.com", "work_for": "中国地质大学（北京）", "country": "中国" } ], "ds_managers": [ { "true_name": "赵国辉", "email": "zhgh@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": "冰川" }