本数据集来源于2024年11月5日至12日在青藏高原东北部黄河源区开展的多年冻土及地下冰调查，旨在探测地下介质电性特征，为多年冻土区地下结构及地下冰分布研究提供地球物理数据。观测采用对置线圈瞬变电磁法（OCTEM），在花石峡、赫拉村、双岔沟和麻多乡4个地点各布设1条测线，测线长度均为100 m，测点间距为5 m。数据集包含原始瞬变电磁观测数据和处理后的数据，原始数据以.HPTEM格式存储，处理后的数据以.dat格式存储，文件名包含采样地点信息，例如“花石峡.HPTEM”和“花石峡.dat”。研究区位于青藏高原东北部黄河源区，地理范围为东经95°50′～98°55′、北纬33°32′～35°35′。本数据集包含原始观测记录及处理后的视电阻率数据，可用于瞬变电磁数据分析、地下介质电性特征研究及多年冻土和地下冰相关地球物理研究。\n
使用者应结合相应原始数据文件中的采集参数开展数据读取与分析，相关参数根据实地观测条件设置。处理后的数据可用于视电阻率特征分析及后续相关研究，具体使用时应结合研究目的判断其适用性。部分测点具有GPS坐标信息，但测线上其他测点的坐标信息不完整，使用时应注意空间定位信息的局限性。当前数据共享状态为暂不共享，未经数据提供方许可，不应擅自获取或使用未公开的数据。", "ds_source": "
本数据集来源于2024年11月在青藏高原东北部黄河源区开展的野外瞬变电磁观测，采用HPTEM-18瞬变电磁系统，配套HPTEM18_V2.3.0软件进行数据采集，并使用HPTEMDataProcess_Ribbon软件进行数据处理。观测采用对置线圈瞬变电磁法（OCTEM），在花石峡、赫拉村、双岔沟和麻多乡4个地点分别布设1条测线，测线长度均为100 m，沿测线的测点间距为5 m。测点坐标通过GPS测量获取，目前仅有部分测点的坐标信息。数据集包含原始瞬变电磁观测数据和处理后的视电阻率数据，原始数据以.HPTEM格式存储，处理后的数据以.dat格式存储，文件名包含采样地点信息，例如“花石峡.HPTEM”和“花石峡.dat”。数据处理包括数据质量控制、异常值剔除和视电阻率反演。采集参数根据实地情况设置，可从相应的原始数据文件中读取。本数据集包含上述野外观测获取的原始数据及其处理成果，不涉及外部数据集的购买、下载或交换。", "ds_process_way": "
本数据集以野外瞬变电磁观测获取的原始数据为基础，采用HPTEM-18瞬变电磁系统及配套HPTEM18_V2.3.0软件进行数据采集，原始数据以.HPTEM格式存储。数据整理过程中保留原始瞬变电磁观测记录，并依据测线所在地点对数据文件进行整理和命名。测点坐标通过GPS测量获取，目前仅有部分测点的坐标信息。不同测线的采集参数根据实地情况设置，可从相应的原始数据文件中读取。数据处理采用HPTEMDataProcess_Ribbon软件，主要包括重复观测数据的质量检查与整理、原始电压响应中的异常值剔除和噪声抑制，以及结合发射电流、线圈参数和仪器标定参数开展视电阻率反演，获得各测点的视电阻率。随后，根据测点空间位置绘制视电阻率剖面，并通过插值形成连续的二维视电阻率剖面。处理后的视电阻率数据以.dat格式存储，文件名依据采样地点命名，例如“花石峡.dat”。本数据集同时提供原始瞬变电磁观测数据及处理后的视电阻率数据。", "ds_quality": "
本数据集的数据质量控制主要体现在原始数据记录的保留、采集参数的可追溯性和空间位置信息的记录。原始瞬变电磁观测记录予以保留，采集参数可从相应的原始数据文件中读取。部分测点具有GPS坐标信息，可用于确定相应测点的空间位置，但测线上其他测点的坐标信息并不完整。数据集包含原始瞬变电磁观测数据及经过质量控制、异常值剔除和视电阻率反演处理的数据，处理成果以.dat格式存储。目前尚未提供处理后数据的定量精度评价指标，使用者可结合视电阻率剖面特征及相关辅助信息，对数据质量和反演结果进行进一步分析与评价。", "ds_acq_start_time": "2024-11-05 00:00:00", "ds_acq_end_time": "2024-11-12 00:00:00", "ds_acq_place": "青藏高原东北部黄河源区", "ds_acq_lon_east": 98.92, "ds_acq_lat_south": 33.53, "ds_acq_lon_west": 95.83, "ds_acq_lat_north": 35.580000000000005, "ds_acq_alt_low": 4197.0, "ds_acq_alt_high": 5151.0, "ds_share_type": "apply-access", "ds_total_size": 4662325, "ds_files_count": 11, "ds_format": "*.HPTEM,*.dat", "ds_space_res": "5m", "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "33ca68fd-2616-425d-bac4-a94f922ce4b3.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "e7579b46-aade-4090-80a4-cbf0d8a8eb69", "ds_serv_man": null, "ds_serv_phone": null, "ds_serv_mail": null, "doi_value": "", "subject_codes": [ "170" ], "quality_level": 0, "publish_time": "2026-10-15 10:20:44", "last_updated": "2026-10-15 10:20:44", "protected": false, "protected_to": "2028-10-13 00:00:00", "lang": "zh", "cstr": "11738.11.ncdc.db7845.2026", "i18n": { "en": { "title": "Opposing-Coils Transient Electromagnetic Dataset of the Yellow River Source Region(November 2024)", "ds_format": "*.HPTEM,*.dat", "ds_source": "This dataset originates from field transient electromagnetic surveys conducted in the Yellow River source area, northeastern Tibet Plateau, in November 2024. The surveys were carried out using the HPTEM-18 transient electromagnetic system, with data collection performed using the HPTEM18_V2.3.0 software. Data processing was conducted using the HPTEMDataProcess_Ribbon software. The survey method employed was the Opposite-Coil Transient Electromagnetic Method (OCTEM). Four sites were selected for surveying: Huashi Xia, Hela Village, Shuangcha Gou, and Mado Township. Each survey line had a length of 100 meters, with points spaced 5 meters apart along the lines. The coordinates of the survey points were obtained through GPS measurement; however, only some of the coordinates are currently available. The dataset includes both raw transient electromagnetic data and processed visual resistivity data. The raw data is stored in.HPTEM format, while the processed data is stored in.dat format. File names contain information about the survey locations, such as “Huashi Xia.HPTEM” and “Huashi Xia.dat”. Data processing involves quality control, removal of outliers, and inversion of visual resistivity values. Survey parameters were set according to field conditions and can be retrieved from the corresponding raw data files. This dataset contains the raw data obtained from these field surveys, along with any processed results. It does not involve the purchase, download, or exchange of external datasets.", "ds_quality": "
The data quality control of this dataset is primarily reflected in the preservation of original data records, the traceability of acquisition parameters, and the recording of spatial location information. Original transient electromagnetic observation records are kept intact, and acquisition parameters can be retrieved from the corresponding raw data files. Some measurement points have GPS coordinates, which can be used to determine their spatial locations. However, the coordinate information for other points along the measurement line is not complete. The dataset includes both original transient electromagnetic observation data, as well as data that has undergone quality control, outlier removal, and inverse resistivity inversion processing. The processed data is stored in.dat format. Currently, no quantitative accuracy metrics for the processed data are provided. Users can analyze and evaluate the data quality and inversion results by considering the characteristics of the inverse resistivity profiles and relevant auxiliary information.
", "ds_ref_way": "", "ds_abstract": "This dataset was collected between November 5th and 12th, 2024, in the region near the source of the Yellow River in the northeastern part of the Tibetan Plateau. The purpose of this survey is to characterize the electrical properties of the underground medium, thereby providing geophysical data for studies related to the underground structure and distribution of underground ice in permafrost regions. The survey utilized the Transverse Coil TEM method. At four locations—Hua Shi Xia, Hela Village, Shuang Cha Gou, and Ma Du Township—one measurement line was established at each site. Each measurement line consisted of 100 meters in length, with a spacing of 5 meters between points. The dataset includes both raw TEM observation data and processed data. The raw data is stored in.HPTEM format, while the processed data is stored in.dat format. File names contain information about the sampling locations, such as “Hua Shi Xia.HPTEM” and “Hua Shi Xia.dat”. The study area is located in the region near the source of the Yellow River in the northeastern part of the Tibetan Plateau, within the geographical coordinates of 95°50′E to 98°55′E and 33°32′N to 35°35′N. This dataset contains both raw observation records and processed visual resistivity data, which can be used for TEM data analysis, research on the electrical properties of underground media, and geophysical studies related to permafrost and underground ice.\r\n\r\n
Users should read and analyze the data in conjunction with the acquisition parameters specified in the corresponding raw data files. These parameters are adjusted according to actual field conditions. The processed data can be used for analyzing visual resistivity characteristics and other related studies. However, its applicability should be determined based on the research objectives. Some measurement points have GPS coordinates, but the coordinate information for other points along the measurement lines is incomplete. Therefore, users must be aware of the limitations of spatial positioning information when using this data. Currently, the data is not shared publicly. Without permission from the data provider, it is not recommended to access or use this data.
", "ds_time_res": "", "ds_acq_place": "The source area of the Yellow River in the northeastern part of the Tibetan Plateau", "ds_space_res": "5m", "ds_projection": "", "ds_process_way": "This dataset is based on raw data obtained from field transient electromagnetic surveys. The data was collected using the HPTEM-18 transient electromagnetic system and the corresponding HPTEM18_V2.3.0 software. The raw data is stored in .HPTEM format. During the data processing step, the original transient electromagnetic observation records were retained, and the data files were organized and named according to the location of each survey line. The coordinates of the survey points were obtained through GPS measurements; currently, only the coordinates of some survey points are available. The acquisition parameters for different survey lines were set according to actual conditions, and these parameters can be retrieved from the corresponding raw data files. Data processing was performed using the HPTEMDataProcess_Ribbon software. This software primarily involves quality checking and organizing duplicate observations, removing outliers and reducing noise from the raw voltage responses. Additionally, inversion techniques using emission current, coil parameters, and instrument calibration parameters were employed to obtain the visual resistivity values at each survey point. Subsequently, visual resistivity profiles were created based on the spatial locations of the survey points, and continuous two-dimensional visual resistivity profiles were generated through interpolation. The processed visual resistivity data is stored in .dat format, with file names corresponding to the sampling locations, such as “Huashi Xia.dat”. This dataset provides both the raw transient electromagnetic observation data and the processed visual resistivity data.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 0, "license_type": "https://creativecommons.org/licenses/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, "belong_to_nieer": false, "allow_update_data": false, "created_from": "admin", "ds_topic_tags": [ "瞬变电磁", "多年冻土", "地下冰" ], "ds_subject_tags": [ "地球科学" ], "ds_class_tags": [], "ds_locus_tags": [ "黄河源区", "青藏高原多年冻土区" ], "ds_time_tags": [ 2024 ], "ds_contributors": [ { "true_name": "许民", "email": "xumin@lzb.ac.cn", "work_for": "中科院西北生态环境资源研究院", "country": "中国" }, { "true_name": "罗维斌", "email": "lwb210521@lzre.edu.cn", "work_for": "兰州资源环境职业技术大学", "country": "中国" }, { "true_name": "韩海东", "email": "hhd@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "" }, { "true_name": "王武", "email": "wangwu@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": "张溪", "email": "zhangxi22@mails.ucas.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "许民", "email": "xumin@lzb.ac.cn", "work_for": "中科院西北生态环境资源研究院", "country": "中国" }, { "true_name": "罗维斌", "email": "lwb210521@lzre.edu.cn", "work_for": "兰州资源环境职业技术大学", "country": "中国" }, { "true_name": "韩海东", "email": "hhd@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "" }, { "true_name": "王武", "email": "wangwu@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": "张溪", "email": "zhangxi22@mails.ucas.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "许民", "email": "xumin@lzb.ac.cn", "work_for": "中科院西北生态环境资源研究院", "country": "中国" }, { "true_name": "罗维斌", "email": "lwb210521@lzre.edu.cn", "work_for": "兰州资源环境职业技术大学", "country": "中国" }, { "true_name": "陈薇", "email": "chenw6677@163.com", "work_for": "兰州交通大学", "country": "中国" } ], "category": "其他" }