本数据集针对阿尔泰山友谊峰地区，包括阿尔泰山友谊峰地区冰川及周边区域，利用遥感影像获取的2008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。只针对2008年当年冰川表面高程，故不进行补充和完善，采用完全开放共享。数据集包含DEM2008，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：2008年阿尔泰山友谊峰地区数字高程模型数据集：DEM2008——2008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可见光立体像对。
", "ds_process_way": "利用ASTER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": "2008-08-01 00:00:00", "ds_acq_end_time": "2008-08-31 00:00:00", "ds_acq_place": "阿尔泰山友谊峰", "ds_acq_lon_east": 88.01, "ds_acq_lat_south": 48.51, "ds_acq_lon_west": 86.94, "ds_acq_lat_north": 49.47, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 98579112, "ds_files_count": 3, "ds_format": "TIFF", "ds_space_res": "30.0m", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "2eb6943b-a239-4f65-890b-8ade07d8baec.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. 2008年阿尔泰山友谊峰地区数字高程模型数据集. 2019。刘时银, 魏俊锋，2008年阿尔泰山友谊峰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.0057.2020.db", "paper_ref_way": "", "ds_ref_instruction": "2008年阿尔泰山友谊峰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": "2020-12-14 16:36:24", "last_updated": "2023-05-16 17:34:42", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.DIMaC.2020.109", "i18n": { "en": { "title": "2008 Digital elevation model dataset for the Friendship Peak area of the Altai Mountains", "ds_format": "", "ds_source": "The main data source is aster.
", "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, Wei Junfeng, Wu Kunpeng, et al. Institute of environment and Engineering in cold and arid regions, Chinese Academy of Sciences. 2008 digital elevation model dataset of youyifeng area in Altai mountain. 2019. Liu Shiyin, Wei Junfeng, 2008 digital elevation model data set of youyifeng area in Altai mountain, China, national glacier, frozen soil and desert scientific data center（ www.ncdc.ac.cn )，2019，doi：10.12072/DIMaC.0057.2020.db", "ds_abstract": "This data set is aimed at the Youyi peak area of Altay Mountain, including the glacier and surrounding area in the Youyi peak area of Altay Mountain. The DEM of the area in 2008 is obtained 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. It is only aimed at the glacier surface elevation in 2008, so it is not necessary to supplement and improve it, and fully open sharing is adopted. The data set contains dem2008, a total of 1 band. Data set file name and band name are as follows: data set file name: 2008 Aertai mountain Youyi peak area digital elevation model data set: dem2008-2008 digital elevation model of this area, unit: meter (m).
", "ds_time_res": "", "ds_acq_place": "Altai Mountain friendship peak", "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 by using aster visible light stereo image pair and the principle of forward intersection.
", "ds_ref_instruction": "\nThe 2008 digital elevation model (DEM) data set of Youyi peak area in Altai mountain 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, "is_paper_in_submitting": false, "ds_topic_tags": [ "阿尔泰山友谊峰", "DEM", "立体像对" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "阿尔泰山友谊峰" ], "ds_time_tags": [ 2008 ], "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": "魏俊锋", "email": "weijunfeng@hnust.edu.cn", "work_for": "湖南科技大学地球科学与空间信息工程学院", "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" }