本数据集针对冷龙岭地区，利用地形图DEM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1972-2016年冷龙岭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ElevationChange1972-2016，共1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1972-2016。
", "ds_source": "本数据集主要为解译数据，数据主要来源为地形图DEM与遥感影像提取的DEM。
", "ds_process_way": "利用地形图DEM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": "1972-01-01 00:00:00", "ds_acq_end_time": "2016-12-31 00:00:00", "ds_acq_place": "冷龙岭", "ds_acq_lon_east": 102.2, "ds_acq_lat_south": 37.36666666666667, "ds_acq_lon_west": 101.2, "ds_acq_lat_north": 37.766666666666666, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 219081, "ds_files_count": 3, "ds_format": "TIFF", "ds_space_res": "30.0m", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "7c03e5e6-063f-493b-ad4c-5e97bc254d7f.jpg", "ds_thumb_from": 2, "ds_ref_way": "曹泊, 潘保田, 王杰， 等. 兰州大学. 1972-2016年冷龙岭地区冰川冰面高程变化数据集. 2019。曹泊，1972-2016年冷龙岭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.0006.2020.db", "paper_ref_way": "", "ds_ref_instruction": "1972-2016年冷龙岭地区冰川冰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）”。数据产权属于兰州大学。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 11:24:45", "last_updated": "2023-05-16 17:35:55", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.DIMaC.2020.130", "i18n": { "en": { "title": "Data set of glacier surface elevation changes in Lenglongling area, 1972-2016", "ds_format": "", "ds_source": "This data set is mainly interpreted data, and the main data sources are DEM from topographic map and DEM extracted from remote sensing image.
", "ds_quality": "After checking the accuracy of DEM in different periods, the plane and elevation are corrected by using the cosine relationship between slope aspect and elevation difference. Then, the relationship between the maximum curvature and elevation difference is used to reduce the error caused by different resolutions. The DEM registration and relative accuracy evaluation of the two periods are carried out, and the glacier elevation changes in different periods are obtained
", "ds_ref_way": "Cao Po, Pan Baotian, Wang Jie, et al. Lanzhou University. Data set of glacier and ice surface elevation change in Lenglongling area from 1972 to 2016. 2019. Caopo, 1972-2016 Lenglongling glacier surface elevation change data set, national glacier frozen soil desert scientific data center（ www.ncdc.ac.cn )，2019，doi：10.12072/DIMaC.0006.2020.db", "ds_abstract": "This data set is aimed at Lenglongling area. Using DEM from topographic map and DEM extracted from remote sensing image, the elevation changes of glacier surface at the center of glaciation is obtained through the difference calculation. It only aims at the glacier surface elevation change in Lenglongling area from 1972 to 2016, so it will not be supplemented and improved, and fully open sharing is adopted. The dataset contains one band, elevationchange 1972-2016. 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, which is from 1972 to 2016.
", "ds_time_res": "", "ds_acq_place": "Lenglongling", "ds_space_res": "30.0m", "ds_projection": "", "ds_process_way": "Using DEM from topographic map and DEM extracted from remote sensing image, the elevation changes of glacier surface in the center of glaciation is obtained by calculating the difference.
", "ds_ref_instruction": " \nThe data set of glacier and ice surface elevation change in Lenglongling area from 1972 to 2016 is derived from the \"survey of ice quantity change in major glaciation centers in Western China (2013fy111400)\". The property right of data belongs to Lanzhou University. The data set can be visualized by GIS software." } }, "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, "ds_topic_tags": [ "冷龙岭", "DEM", "冰面高程变化" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "冷龙岭" ], "ds_time_tags": [ 1972, 2016 ], "ds_contributors": [ { "true_name": "曹泊", "email": "caobo@lzu.edu.cn", "work_for": "兰州大学", "country": "" } ], "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": "曹泊", "email": "caobo@lzu.edu.cn", "work_for": "兰州大学", "country": "" } ], "category": "冰川" }