本数据集针对纳木那尼峰地区，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1974-2006年纳木那尼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ElevationChange1974-2000和ElevationChange2000-2006，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1974-2000和2000-2006两期。
", "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": "1974-01-01 00:00:00", "ds_acq_end_time": "2006-12-31 00:00:00", "ds_acq_place": "纳木那尼峰", "ds_acq_lon_east": 81.76666666666667, "ds_acq_lat_south": 30.066666666666666, "ds_acq_lon_west": 81.0, "ds_acq_lat_north": 31.266666666666666, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 295798, "ds_files_count": 3, "ds_format": "TIFF", "ds_space_res": "30.0m", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "fd92b45e-7a07-4465-bbba-b03e80e5e23c.jpg", "ds_thumb_from": 2, "ds_ref_way": "使用申明：1974-2006年纳木那尼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）”。 引用方式： 1.Ye, Q., T. Bolch, R. Naruse, et al. (2015). Glacier mass changes in Rongbuk catchment on Mt. Qomolangma from 1974 to 2006 based on topographic maps and ALOS PRISM data. Journal of Hydrology, 530, 273-280.DOI:10.1016/j.jhydrol.2015.09.014 2.叶庆华,程维明,赵永利,等.青藏高原冰川变化遥感监测研究综述[J].地球信息科学学报,2016,18(7):920-930. [Ye Q H, Cheng W M, Zhao Y L, et al. 2016. A review on the research of glacier changes on the Tibetan Plateau by remote sensing technologies. Journal of Geo-information Science, 18(7):920-930 ] DOI:10.3724/SP.J.1047.2016.00920。叶庆华, 宗继彪，1974-2006年纳木那尼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.0004.2020.db", "paper_ref_way": "", "ds_ref_instruction": "数据产权属于中国科学院青藏高原研究所。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 11:32:52", "last_updated": "2023-05-16 17:35:52", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.DIMaC.2020.149", "i18n": { "en": { "title": "Data set of glacier surface elevation changes in Namunani mountain area from 1974 to 2006", "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": "Application statement: the data set of glacier surface elevation change in Namunani mountain area from 1974 to 2006 is from the special project of basic scientific and technological work \"survey of ice quantity change of major glaciation centers in Western China (2013fy111400)\". Citation: 1. Ye, Q., t. Bolch, R. Naruse, et al. (2015). Glacier mass changes in Rongbuk catchment on Mt. Qomolangma from 1974 to 2006 based on topographical maps and alos prism data. Journal of hydrology, 530, 273-280 DOI:10.1016/j.jhydrol.2015.09.014 2. Ye Qinghua, Cheng Weiming, Zhao Yongli, [ye QH, Cheng WM, Zhao Y L, et al. 2016. A review on the research of glacier changes on the Tibetan Plateau by remote sensing technologies. Journal of geo information science, 18 (7): 920-930] DOI:10.3724/SP.J.1047.2016.00920 。 Ye Qinghua, Zong Jibiao, 1974-2006 data set of glacier surface elevation change in namunani mountain area, national glacier frozen soil desert scientific data center（ www.ncdc.ac.cn )，2019，doi：10.12072/DIMaC.0004.2020.db", "ds_abstract": "In this data set, the elevation changes of glacier surface in the center of glaciation is obtained by using DEM from topographic map, SRTM (2000) and DEM extracted from remote sensing image. Only for the glacier surface elevation changes in the Namunani peak area from 1974 to 2006, so no additions and refinements are made, and full open sharing is used. \nThe dataset contains two bands, elevation change 1974-2000 and elevationchange 2000-2006. 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 1974-2000 and 2000-2006.
", "ds_time_res": "", "ds_acq_place": "Namunanib peak", "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": " \nThe property right of the data belongs to the Institute of Qinghai Tibet Plateau, Chinese Academy of Sciences. This system can be used to visualize the data set." } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "ds_topic_tags": [ "纳木那尼峰", "DEM", "冰面高程变化" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "纳木那尼峰" ], "ds_time_tags": [ 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 ], "ds_contributors": [ { "true_name": "叶庆华", "email": "yeqh@itpcas.ac.cn", "work_for": "中国科学院青藏高原研究所", "country": "" }, { "true_name": "宗继彪", "email": "", "work_for": "中国科学院青藏高原研究所", "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": "叶庆华", "email": "yeqh@itpcas.ac.cn", "work_for": "中国科学院青藏高原研究所", "country": "" } ], "category": "冰川" }