此数据集中包括了Amery冰架流速数据，时间是从1996年到2016年，采用Ｃ波段EnvisataSAR数据，波长为5.6cm，分辨率为30ｍ，幅宽100km×100kｍ。研究利用多源SAR数据提取Amery冰架地区高精度高分辨率表面冰流速方法。DInSAR方法基于传统的差分干涉测量技术，可以获得距离向的形变值，提取的流速结果分辨率和精度较高。偏移量跟踪方法能同时获取距离向和方位向的绝对形变值，对影像相干性要求低，在纹理缺乏的南极地区可以实现更大范围的冰流速测定。两种方法相互结合获取精确二维冰流速图。通过检查稳定的岩石点形变值以及已有流速产品中年流速小于5m/a的区域流速值，利用双线性多项式函数等方法拟合消除残差。
", "ds_source": "部分数据是下载、交换获得，数据是从欧空局下载，主要包括了ERS1、ERS2、ENVISAT和 Sentinel-1。", "ds_process_way": "
研究利用多源SAR数据提取Amery冰架地区高精度高分辨率表面冰流速方法。", "ds_quality": "
数据质量良好
", "ds_acq_start_time": "1996-01-01 00:00:00", "ds_acq_end_time": "2016-12-31 00:00:00", "ds_acq_place": "南极，Amery冰架", "ds_acq_lon_east": null, "ds_acq_lat_south": 66.5, "ds_acq_lon_west": 180.0, "ds_acq_lat_north": 90.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 8710585, "ds_files_count": 3, "ds_format": "Geotif", "ds_space_res": "200m*200m", "ds_time_res": "年", "ds_coordinate": "无", "ds_projection": "GCS_WGS_1984", "ds_thumbnail": "8d58b037-b7be-4135-a536-9fe192c00742.png", "ds_thumb_from": 0, "ds_ref_way": "周春霞，1996-2016年南极Amery冰架冰流速图，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.CCI.db0036.2020", "paper_ref_way": "", "ds_ref_instruction": "由于本数据集测定时间不尽一致，指标繁杂，如需要详细原始数据者，请联系数据管理者。\n 联系信息：\n 联系人姓名: 周春霞\n Email: zhoucx@whu.edu.cn \n Tel: 027-68778427\n", "ds_from_station": null, "organization_id": "b3c14ec7-0cc1-417f-8986-b6fc1352242f", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2020-12-03 08:55:50", "last_updated": "2021-01-04 11:50:28", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.CCI.2020.70", "i18n": { "en": { "title": "Ice velocity chart of Amery ice shelf 1996-2016", "ds_format": "", "ds_source": "Part of the data is downloaded and exchanged, and the data is downloaded from ESA, mainly including ers1, ers2, ENVISAT and sentinel-1.", "ds_quality": "
Good data quality
", "ds_ref_way": "", "ds_abstract": "", "ds_time_res": "年", "ds_acq_place": "Antarctic ice shelf, Amery", "ds_space_res": "200m*200m", "ds_projection": "", "ds_process_way": "This paper studies the method of extracting high-precision and high-resolution surface ice velocity from multi-source SAR data in Amery ice shelf area.", "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": [ "Amery冰架", "流速", "SAR数据" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "Amery冰架", "南极" ], "ds_time_tags": [ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 ], "ds_contributors": [ { "true_name": "周春霞", "email": "zhoucx@whu.edu.cn", "work_for": "武汉大学中国南极中心", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "周春霞", "email": "zhoucx@whu.edu.cn", "work_for": "武汉大学中国南极中心", "country": "中国" } ], "ds_managers": [ { "true_name": "周春霞", "email": "zhoucx@whu.edu.cn", "work_for": "武汉大学中国南极中心", "country": "中国" } ], "category": "冰川" }