本数据集针对天山托木尔峰地区，包括天山托木尔峰地区冰川及周边区域，利用地形图DEM、SRTM（2000）与遥感影像提取的DEM，通过差值计算，获取冰川作用中心冰川表面高程变化。只针对1971-2012年天山托木尔峰地区冰川表面高程变化，故不进行补充和完善，采用完全开放共享。数据集包含ElevationChange1971-2000和ElevationChange2000-2012，共2个波段。字段度量单位：米（m）。数据集主要为遥感影像提取资料，仅表示遥感影像获取时间的冰川表面高程变化，时间为1971-2000和2000-2012两期。
", "ds_source": "本数据集主要为解译数据，数据主要来源为地形图DEM、SRTM（2000）与遥感影像提取的DEM。
", "ds_process_way": "利用地形图DEM、SRTM（2000）与遥感影像提取的DEM，通过差值计算，获取冰川作用中心冰川表面高程变化。
", "ds_quality": "对不同时期的DEM进行精度检验后，利用坡度坡向与高程差的余弦关系，进行平面与高程校正；然后利用最大曲率与高程差的关系，降低因不同分辨率带来的误差，对两期DEM进行配准和相对精度评价，得到不同时期的冰川高程变化。
", "ds_acq_start_time": "1971-01-01 00:00:00", "ds_acq_end_time": "2012-12-31 00:00:00", "ds_acq_place": "天山托木尔峰", "ds_acq_lon_east": 80.46000000000001, "ds_acq_lat_south": 41.63, "ds_acq_lon_west": 79.73, "ds_acq_lat_north": 42.24, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 9050315, "ds_files_count": 3, "ds_format": "TIFF", "ds_space_res": "30.0m", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "9b6ac4b2-87fa-4bc7-974a-6e6aab069b77.jpg", "ds_thumb_from": 2, "ds_ref_way": "刘时银, 魏俊锋, 吴坤鹏， 等. 中科院寒区旱区环境与工程研究所. 1971-2012年天山托木尔峰地区冰川表面高程变化数据集. 2019。刘时银, 蒋宗立，1971-2012年天山托木尔峰地区冰川表面高程变化数据集，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2019，doi：10.12072/DIMaC.0042.2020.db", "paper_ref_way": "", "ds_ref_instruction": "1971-2012年天山托木尔峰地区冰川表面高程变化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）”。数据产权属于中科院寒区旱区环境与工程研究所。本数据集可用地理信息系统软件进行图形可视化。", "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": "2021-01-07 11:19:45", "last_updated": "2023-05-16 17:35:23", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.DIMaC.2020.126", "i18n": { "en": { "title": "Data set of glacier surface elevation changes in Tomur peak area of Tianshan Mountains from 1971 to 2012", "ds_format": "", "ds_source": "This data set is mainly interpreted data. The main data sources are DEM of topographic map, SRTM (2000) and DEM extracted from remote sensing image.
", "ds_quality": "After checking the accuracy of DEM in different periods, we use the cosine relationship between slope aspect and elevation difference to carry out plane and elevation correction; then we use the relationship between maximum curvature and elevation difference to reduce the error caused by different resolutions, carry out registration and relative accuracy evaluation on the two periods of DEM, and get the glacier elevation changes in different periods.
", "ds_ref_way": "Liu Shiyin, Wei Junfeng, Wu Kunpeng, et al. Institute of environment and Engineering in cold and arid regions, Chinese Academy of Sciences. Data set of glacier surface elevation changes in the Tuomuer mountain area, Tianshan Mountains, 1971-2012. 2019. Liu Shiyin, Jiang Zongli, 1971-2012 data set of glacier surface elevation change in Tomur peak area, Tianshan Mountains, China（ www.ncdc.ac.cn )，2019，doi：10.12072/DIMaC.0042.2020.db", "ds_abstract": "In this data set, the elevation changes of glacier surface at the center of glaciation is obtained by using DEM of topographic map, SRTM (2000) and DEM extracted from remote sensing images for tuomu'er peak area in Tianshan Mountains. It only aims at the glacier surface elevation change in the Tuomuer peak area of Tianshan Mountains from 1971 to 2012, so it is not supplemented and improved, and the fully open sharing is adopted. The dataset contains two bands, elevation change 1971-2000 and elevationchange 2000-2012. Field measurement unit: meter (m). The data set is mainly extracted from remote sensing images, and only represents the change of glacier surface elevation at the time of remote sensing image acquisition. The time is 1971-2000 and 2000-2012.
", "ds_time_res": "", "ds_acq_place": "Mount Tomur, Tianshan", "ds_space_res": "30.0m", "ds_projection": "", "ds_process_way": "Based on DEM of topographic map, SRTM (2000) and DEM extracted from remote sensing image, the elevation change of glacier surface at the center of glaciation was obtained by difference calculation.
", "ds_ref_instruction": " \nFrom 1971 to 2012, the data set of glacier surface elevation change in Tuomuer peak area of Tianshan Mountain is derived from the special project of basic scientific and technological work \"survey of ice change in major glaciation centers in Western China (2013fy111400)\". The property right of the data belongs to the Institute of environment and Engineering in cold and arid areas of Chinese Academy of Sciences. This system can be used to visualize the data set." } }, "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": [ "天山托木尔峰", "冰面高程变化", "DEM" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "天山托木尔峰" ], "ds_time_tags": [ 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 ], "ds_contributors": [ { "true_name": "刘时银", "email": "liusy@lzb.ac.cn", "work_for": "云南大学国际河流与生态安全研究院", "country": "中国" }, { "true_name": "蒋宗立", "email": "jiangzongli@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": "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" }, { "true_name": "刘时银", "email": "liusy@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" }