本数据集主要研究干旱区绿洲化和荒漠化过程，属于风沙环境力学范围。数据文件：民勤地区沙丘形态和沙漠扩展速度.xls，包含1个表：（1）Sheet1（沙丘高度及移动速度观测记录表），包含了民勤三号观测站沙丘形态和沙漠扩展速度的测定，同时包含了沙丘高度、沙丘移动速度等指标。本数据表共有二个字段：height，沙丘高度（精度0.001m）；dune migration speed，沙丘移动速度。度量单位：“fs”量纲：m，“dune migration speed”量纲：m/s。
", "ds_source": "高精度GPS测量。约1个月一次，沙尘暴频发期增加测量。
", "ds_process_way": "野外测量，数采自动记录
", "ds_quality": "严格按照仪器操作规范进行观测和数据采集。在加工生成数据表时，剔除了一些明显误差数据。
", "ds_acq_start_time": "2009-01-01 00:00:00", "ds_acq_end_time": "2010-01-01 00:00:00", "ds_acq_place": "巴丹吉林沙漠边缘", "ds_acq_lon_east": 102.99722222222222, "ds_acq_lat_south": 38.574444444444445, "ds_acq_lon_west": 102.99722222222222, "ds_acq_lat_north": 38.574444444444445, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 31744, "ds_files_count": 2, "ds_format": "Excel表格", "ds_space_res": null, "ds_time_res": "月", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "2539d8fe-592b-4987-bb26-02f64c5b7cf5.png", "ds_thumb_from": 0, "ds_ref_way": "薄天利，甘肃民勤地区沙丘形态和沙漠扩展速度观测数据集（2009-2010年），国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.973Desert.db0077.2020", "paper_ref_way": "", "ds_ref_instruction": "由于本数据集测定时间不尽一致，指标繁杂，如需要详细原始数据者，请联系数据管理者。", "ds_from_station": null, "organization_id": "eb2b3ac4-919d-433d-b987-bcee1ae83c9e", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2020-12-18 17:00:13", "last_updated": "2020-12-18 17:00:13", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.973Desert.2020.83", "i18n": { "en": { "title": "Observation data set of dune morphology and desert spreading velocity in Minqin area, Gansu Province (2009-2010)", "ds_format": "", "ds_source": "", "ds_quality": "The data acquisition and operation of the instrument are in strict accordance with the specifications. In the process of generating data table, some obvious error data are eliminated.
", "ds_ref_way": "", "ds_abstract": "This data set mainly studies the process of oasis and desertification in arid area, which belongs to the scope of Aeolian environmental mechanics. Data file: dune morphology and desert spreading speed in Minqin area. XLS, including a table: (1) Sheet1 (dune height and movement speed observation record table), including the measurement of dune morphology and desert expansion speed of Minqin No.3 observation station, and also including dune height, sand dune movement speed and other indicators. There are two fields in this data table: height, dune height (accuracy: 0.001M); dune migration speed, dune movement speed. Unit of measurement: \"Fs\" dimension: m, \"dune migration speed\" dimension: M / s.
", "ds_time_res": "月", "ds_acq_place": "Edge of Badain Jaran Desert", "ds_space_res": "", "ds_projection": "", "ds_process_way": "", "ds_ref_instruction": "" } }, "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": [ "沙丘移动速度", "沙丘高度", "沙漠" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "巴丹吉林沙漠边缘" ], "ds_time_tags": [ 2013 ], "ds_contributors": [ { "true_name": "薄天利", "email": "btl@lzu.edu.cn", "work_for": "兰州大学西部灾害与环境力学教育部重点实验室", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "薄天利", "email": "btl@lzu.edu.cn", "work_for": "兰州大学西部灾害与环境力学教育部重点实验室", "country": "中国" } ], "ds_managers": [ { "true_name": "王涛", "email": "wangtao@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "薄天利", "email": "btl@lzu.edu.cn", "work_for": "兰州大学西部灾害与环境力学教育部重点实验室", "country": "中国" } ], "category": "沙漠与荒漠化" }