数据集包括地表累计沉降量（time1_time2.tif）和形变速率（sentinel(2017年10月-2022年12月)形变速率监测结果.tif）。数据时间范围为（2017年10月—2022年12月），数据空间范围为（东经98.830°-100.888°，北纬29.200°-30.828°）。
", "ds_source": "来源于欧空局哨兵1号SAR数据。
", "ds_process_way": "通过影像配准、干涉像对组合、高相干点选取, 差分干涉、滤波、相位解缠、低频高频形变解算和地理编码等操作获取对应的地表形变速率和累计沉降量。
", "ds_quality": "大部分监测点形变值标准差均值为毫米级且符合正态分布，通过监测结果的内符合精度验证，表明监测结果都在亚厘米级别,监测结果的可靠性较高。
", "ds_acq_start_time": "2017-10-01 00:00:00", "ds_acq_end_time": "2022-12-31 00:00:00", "ds_acq_place": "理塘县域内", "ds_acq_lon_east": 100.88777777777779, "ds_acq_lat_south": 29.183333333333334, "ds_acq_lon_west": 98.83, "ds_acq_lat_north": 30.82777777777778, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 25082545375, "ds_files_count": 145, "ds_format": "GeoTIFF", "ds_space_res": "20米", "ds_time_res": "15天", "ds_coordinate": "WGS84", "ds_projection": "GCS_WGS_1984", "ds_thumbnail": "6b94acdc-993a-42d2-8225-48d8db884886.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "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 17:34:28", "last_updated": "2025-04-29 14:53:34", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.GLACIER.DB6691.2024", "i18n": { "en": { "title": "The deformation inversion dataset of Litang area based on Sentinel-1 (2017-2022)", "ds_format": "GeoTIFF", "ds_source": "Derived from the Sentinel-1 SAR data of the European Space Agency.
", "ds_quality": "The average standard deviation of deformation values at most monitoring points is in the millimeter range and follows a normal distribution. Through the internal consistency accuracy verification of the monitoring results, it indicates that the monitoring results are at the sub centimeter level and have high reliability.
", "ds_ref_way": "", "ds_abstract": "The dataset includes cumulative surface subsidence (time1_time2.tif) and deformation rate (sentinel (October 2017 December 2022) deformation rate monitoring results. tif). The data time range is from October 2017 to December 2022, and the data space range is from 98.830 ° E to 100.888 ° E and 29.200 ° N to 30.828 ° N.
", "ds_time_res": "15天", "ds_acq_place": "Within Litang County", "ds_space_res": "20米", "ds_projection": "GCS_WGS_1984", "ds_process_way": "The corresponding surface deformation rate and cumulative settlement are obtained through image registration, interferometric image pair combination, high coherence point selection, differential interferometry, filtering, phase unwrapping, low-frequency and high-frequency deformation calculation, and geographic coding operations.
", "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, "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": [ "四川", "甘孜", "理塘" ], "ds_time_tags": [ 2017, 2018, 2019, 2020, 2021, 2022 ], "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" }