天然含水层可能包含多尺度介质非均质性，但其对溶质运移的共同影响尚不清楚。为了填补这一知识空白，本数据集选择了一个冲积含水层作为代表性介质，其中多个水相的空间分布(每个相内的典型非均匀水力导率(K))可以代表区域尺度(大尺度)和亚水相尺度(局部尺度)的非均质性。为了获得第一手资料，在中国北京通州地区的冲积含水层进行了现场示踪试验，在不同含水层深度获得的突破曲线(btc)表明，区域和次水相尺度的非均质性对溶质运移都有显著影响。进一步的数值分析表明，区域尺度非均质性对溶质输运的影响随着相邻水相间K值差异的增大而增大。相比之下，当相邻水相的平均Ks值越接近时，各水相内嵌的亚水相尺度非均质性对溶质运移起着重要的控制作用。早期的双峰输运主要受多尺度优先流动路径的影响，而后期的溶质保留主要受后期输运的不动区影响。由多尺度非均质性引起的异常输运可由双非均质域模型(DHDM)捕获，而双平流-色散方程(DADE)和分形移动-不移动(fMIM)模型只能分别在前期和后期提供合理的预测。本研究揭示了多尺度非均质性对溶质输运的控制机制。", "ds_source": "
数据由现场实验仪器测得。", "ds_process_way": "
现场示踪试验结合数值分析。", "ds_quality": "
数据质量较好。", "ds_acq_start_time": "2014-09-27 00:00:00", "ds_acq_end_time": "2014-10-10 00:00:00", "ds_acq_place": "北京市通州区", "ds_acq_lon_east": 116.91666666666667, "ds_acq_lat_south": 39.6, "ds_acq_lon_west": 116.5, "ds_acq_lat_north": 40.0, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 92242724, "ds_files_count": 2, "ds_format": "mat,xlsx,bas", "ds_space_res": "", "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "c91e725b-32af-452d-b62c-b2a05d7c7f86.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "0a4269e1-65f4-45f1-aeba-88ea3068eebf", "ds_serv_man": "敏玉芳", "ds_serv_phone": "09314967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.55" ], "quality_level": 3, "publish_time": "2023-09-25 14:49:35", "last_updated": "2026-01-14 11:06:46", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.ZENODO.DB4019.2023", "i18n": { "en": { "title": "Competitive control dataset of multi-scale aquifer heterogeneity on solute transport in alluvial aquifers", "ds_format": "mat,xlsx,bas", "ds_source": "
The data was measured by on-site experimental instruments.", "ds_quality": "
The data quality is good.", "ds_ref_way": "", "ds_abstract": "
Natural aquifers may contain multi-scale media heterogeneity, but their combined impact on solute transport is still unclear. To fill this knowledge gap, this dataset selected an alluvial aquifer as a representative medium, where the spatial distribution of multiple water phases (typical non-uniform hydraulic conductivity (K) within each phase) can represent heterogeneity at the regional scale (large-scale) and sub water phase scale (local scale). In order to obtain first-hand information, field tracing experiments were conducted in the alluvial aquifer of Tongzhou area, Beijing, China. Breakthrough curves (BTC) obtained at different depths of the aquifer showed that regional and sub water phase scale heterogeneity had a significant impact on solute transport. Further numerical analysis shows that the influence of regional heterogeneity on solute transport increases with the increase of the difference in K values between adjacent water phases. In contrast, when the average Ks values of adjacent water phases are closer, the heterogeneity of the sub water phase scale embedded in each water phase plays an important controlling role in solute transport. Early bimodal transport was mainly influenced by multi-scale preferential flow paths, while later solute retention was mainly affected by the stationary zone of later transport. Anomalous transport caused by multiscale heterogeneity can be captured by the Dual Heterogeneous Domain Model (DHDM), while the Dual Advection Dispersion Equation (DADE) and Fractal Movement Non Movement (fMIM) models can only provide reasonable predictions in the early and late stages, respectively. This study reveals the control mechanism of multiscale heterogeneity on solute transport.
", "ds_time_res": "", "ds_acq_place": "Tongzhou District, Beijing", "ds_space_res": "", "ds_projection": "", "ds_process_way": "On site tracing experiments combined with numerical analysis.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_outside", "cstr_reg_from": "reg_outside", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "地下水", "多尺度异质性", "示踪剂测试", "溶质运移", "洪积含水层" ], "ds_subject_tags": [ "水文学" ], "ds_class_tags": [], "ds_locus_tags": [ "北京市", "通州区" ], "ds_time_tags": [ 2014 ], "ds_contributors": [ { "true_name": "马瑞", "email": "rma@cug.edu.cn", "work_for": "中国地质大学", "country": "" } ], "ds_meta_authors": [ { "true_name": "马瑞", "email": "rma@cug.edu.cn", "work_for": "中国地质大学", "country": "" } ], "ds_managers": [ { "true_name": "马瑞", "email": "rma@cug.edu.cn", "work_for": "中国地质大学", "country": "" } ], "category": "水文" }