本数据为2012年6月采用瑞典Mala ProEx探地雷达设备获取的冰下地形数据；天线采用100MHz绳状天线，深度计算的波速设定为0.17m/ns，采集软件为Groundvision2。数据格式为Excel文件格式，记录内容包括序号，经度，纬度，厚度v=0.17m/ns;数据条数为5161条。采用协议共享方式。数据集包括2012年冬克玛底冰下地形测量成果，格式为文本数据文件。数据文件中的要素：序号；经度（单位：度（°）），精确到小数点后8位；纬度（单位：度（°）），精确到小数点后8位；厚度（单位：米(m)），v=0.17m/ns，精确到小数点后2位。
", "ds_source": "自主产生。
", "ds_process_way": "本数据为利用2012年6月瑞典Mala ProEx探地雷达获取的冰下地形数据，参考《冰川观测与研究方法》（科学出版社2012年）实地测量的数据；天线采用100MHz绳状天线，深度计算的波速设定为0.17m/ns，采集软件Groundvision2，数据经纬度坐标系 UTM WGS84。
", "ds_quality": "用探地雷达测量前，先进行雷达波速在冰川冰内传播速度的测量，并对探地雷达相关参数进行修改，确保获取对应冰川最精确的厚度数据。
", "ds_acq_start_time": "2012-06-01 00:00:00", "ds_acq_end_time": "2012-06-30 00:00:00", "ds_acq_place": "冬克玛底", "ds_acq_lon_east": 92.26666666666667, "ds_acq_lat_south": 32.78, "ds_acq_lon_west": 91.74, "ds_acq_lat_north": 33.330000000000005, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 68495, "ds_files_count": 3, "ds_format": "TXT", "ds_space_res": "1.0m", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "e95d7ee8-edf1-40b2-a781-8e2aed649d36.tif", "ds_thumb_from": 2, "ds_ref_way": "上官冬辉. 中国科学院寒区旱区环境与工程研究所.2012年冬克玛底地区冰下地形数据集,2019。上官冬辉, 杜二计，2012年冬克玛底冰川冰下地形数据集，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2019，doi：10.12072/DIMaC.0071.2020.db", "paper_ref_way": "", "ds_ref_instruction": "“2012年冬克玛底地区冰下地形数据集”来源于科技基础性工作专项“中国西部主要冰川作用中心冰量变化调查（2013FY111400）”；产权归属中国科学院寒区旱区环境与工程研究所，联系人：上官冬辉，甘肃省兰州市城关区东岗西路320#，730000，0931-4967396,dhguan@lzb.ac.cn。", "ds_from_station": "中国西部主要冰川作用中心冰量变化调查", "organization_id": "75b2f6d5-c7ed-438c-b7be-98672c057ed5", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "lihongxing@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2020-12-18 11:23:46", "last_updated": "2023-05-16 17:35:44", "protected": false, "protected_to": "2022-12-06 00:00:00", "lang": "zh", "cstr": "11738.11.ncdc.DIMaC.2020.145", "i18n": { "en": { "title": "2012 Dongkemadi glacier subglacial topographic data sets", "ds_format": "", "ds_source": "Self generated.
", "ds_quality": "Before using ground penetrating radar (GPR), the propagation velocity of radar wave velocity in glacier ice is measured, and the parameters of GPR are modified to ensure the most accurate thickness data of corresponding glacier.
", "ds_ref_way": "\nShangguan Donghui. Institute of environment and Engineering in cold and arid regions, Chinese Academy of Sciences. Data set of subglacial topography in Dongkemadi area, 2012, 2019. Shangguan Donghui, Du Erji, 2012 Dongkemadi glacier subglacial terrain data set, national glacier frozen soil desert scientific data center（ www.ncdc.ac.cn )，2019，doi：10.12072/DIMaC.0071.2020.db", "ds_abstract": "This data is the terrain data under ice obtained by Mala PROEX ground penetrating radar equipment of Sweden in June 2012; the antenna adopts 100MHz rope antenna; the wave velocity of depth calculation is set to 0.17m/ns; the acquisition software is groundvision2. The data format is excel file format, including serial number, longitude, latitude, thickness, v = 0.17m/ns; the number of data is 5161. Protocol sharing is adopted. The data set includes the 2012 dongkema subglacial topographic survey results in the format of text data file. Features in data file: serial number; longitude (unit: Degree (°)), accurate to 8 decimal places; latitude (unit: Degree (°)), accurate to 8 decimal places; thickness (unit: meter (m)), v = 0.17m/ns, accurate to 2 decimal places.
", "ds_time_res": "", "ds_acq_place": "Dongkemadi ", "ds_space_res": "1.0m", "ds_projection": "", "ds_process_way": "Under-ice terrain data obtained by Mala PROEX ground penetrating radar of Sweden in June 2012, referring to the field survey data of glacier observation and research methods (Science Press, 2012); the antenna adopts 100MHz rope antenna, the wave speed of depth calculation is set to 0.17m/ns, the acquisition software groundvision2, data longitude and latitude coordinate system UTM WGS84.
", "ds_ref_instruction": "\n\"2012 Dongkemadi area subglacial terrain data set\" is derived from the scientific and technological basic work special project \"investigation of ice change in major glaciation centers in Western China (2013fy111400)\"; the property right belongs to the Institute of environment and Engineering in cold and arid regions, Chinese Academy of Sciences, and contact person: Donggang West Road, Chengguan District, Lanzhou City, Gansu Province, 0931-4967396,dhguan@lzb.ac.cn 。" } }, "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": [ "GPR", "冰厚", "冬克玛底" ], "ds_subject_tags": [ "几何大地测量学" ], "ds_class_tags": [], "ds_locus_tags": [ "冬克玛底" ], "ds_time_tags": [ 2012 ], "ds_contributors": [ { "true_name": "上官冬辉", "email": "dhguan@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "" }, { "true_name": "杜二计", "email": "duerji@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "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": "上官冬辉", "email": "dhguan@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "" } ], "category": "冰川" }