本数据集针对慕士塔格地区，包括慕士塔格地区冰川及周边区域，利用遥感影像获取的2014年该地区数字高程模型。数据集包含1个波段，主要利用可见光立体像对，基于时差和摄影角度差异，通过前方交会的原理在erdas软件中，获取的冰川区数字高程模型。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数字高程模型，时间为2014年3月。采用完全开放共享。数据集包含DEM2014，共1个波段。数据集文件名及波段名称对应如下：数据集文件名：2014年慕士塔格地区数字高程模型数据集，DEM2014——2014年该地区数字高程模型，单位：米(m)。
", "ds_source": "本数据集主要为解译数据，数据主要来源为ASTER光学立体像对遥感数据。
", "ds_process_way": "利用可见光立体像对，基于时差和摄影角度差异，通过前方交会的原理在erdas软件中，获取的冰川区数字高程模型。
", "ds_quality": "采用ENVI 4.7 软件中的“DEM Extraction”模块，对立体像对进行DEM数据提取。利用 数据源中的辐射校正参数对立体像对进行校正，从而消除 影像中的条带效应，提高DEM 数据提取的稳定性和可靠性。在DEM 数据提取过程中，按照典型研究区的分布对立体像对进行分区块处理覆盖每个典型研究区的立体像对至少采用20 个GCP，且均匀分布在非冰川区，其中高程控制点提取自中国历史地形图数据，平面控制点提取自同时期的LandSat TM+影像。
", "ds_acq_start_time": "2014-03-01 00:00:00", "ds_acq_end_time": "2014-03-31 00:00:00", "ds_acq_place": "慕士塔格", "ds_acq_lon_east": 75.75, "ds_acq_lat_south": 37.91, "ds_acq_lon_west": 74.88, "ds_acq_lat_north": 38.61, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 9844560, "ds_files_count": 3, "ds_format": "TIFF", "ds_space_res": "30.0m", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "70b6c9e6-cab3-4490-9446-f1d3a70fe018.jpg", "ds_thumb_from": 2, "ds_ref_way": "刘时银, 张震, 吴坤鹏， 等. 中科院寒区旱区环境与工程研究所. 2014年慕士塔格地区数字高程模型数据集. 2019。刘时银, 张震，2014年慕士塔格地区数字高程模型数据集，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2019，doi：10.12072/DIMaC.0055.2020.db", "paper_ref_way": "", "ds_ref_instruction": "2014年慕士塔格地区数字高程模型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": "2020-12-17 17:14:33", "last_updated": "2023-05-16 17:34:59", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.DIMaC.2020.98", "i18n": { "en": { "title": "2014 digital elevation model data set of Mostag area", "ds_format": "", "ds_source": "This data set is mainly interpreted data, and the main data source is aster optical stereo image remote sensing data.
", "ds_quality": "The DEM extraction module of Envi 4.7 software is used to extract DEM data from stereo image pairs. In order to eliminate the stripe effect and improve the stability and reliability of DEM data extraction, the radiometric correction parameters in the data source are used to correct the stereo image pair. In the process of DEM data extraction, according to the distribution of typical research areas, the stereo image pairs are divided into blocks, covering at least 20 GCPs in each typical research area, and evenly distributed in non glacial areas. The elevation control points are extracted from the historical topographic map data of China, and the plane control points are extracted from the Landsat TM + image of the same period.
", "ds_ref_way": "\nLiu Shiyin, Zhang Zhen, Wu Kunpeng, et al. Institute of environment and Engineering in cold and arid regions, Chinese Academy of Sciences. 2014 digital elevation model dataset of mustag area. 2019. Liu Shiyin, Zhang Zhen, 2014 digital elevation model data set of MUZTAG area, national glacier frozen soil desert scientific data center（ www.ncdc.ac.cn )，2019，doi：10.12072/DIMaC.0055.2020.db", "ds_abstract": "This data set aims at the mustag area, including the glacier and its surrounding areas, and obtains the DEM of the area in 2014 by using remote sensing images. The data set contains one band, which is mainly based on the difference of time difference and camera angle, and the digital elevation model of glacier area is obtained in ERDAS software based on the principle of forward intersection. The data set is mainly the data extracted from remote sensing images, which only represents the acquisition time of remote sensing images. The date is March 2014. Fully open sharing is adopted. The data set contains dem2014, a total of 1 band. Data set file name and band name are as follows: data set file name: 2014 MUZTAG area digital elevation model data set, dem2014-2014 digital elevation model of the region, unit: meter (m).
", "ds_time_res": "", "ds_acq_place": "Mostag", "ds_space_res": "30.0m", "ds_projection": "", "ds_process_way": "Based on the difference of time difference and photography angle, the digital elevation model of glacier area is obtained in ERDAS software based on the principle of forward intersection.
", "ds_ref_instruction": "\nThe 2014 digital elevation model (DEM) data set of MUZTAG area is derived from the special project of basic scientific and technological work \"investigation 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. 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": [ "慕士塔格", "DEM", "立体像对" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "慕士塔格" ], "ds_time_tags": [ 2014 ], "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": "张震", "email": "", "work_for": "中国科学院西北生态环境资源研究院", "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": "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" }