| 基于水文-地球物理模型的地下水污染磁电阻率异常动态监测仿真 |
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| 引用本文： | 朱凯光,扬建文.基于水文-地球物理模型的地下水污染磁电阻率异常动态监测仿真[J].应用地球物理,2008,5(4):322-330. |
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| 作者姓名： | 朱凯光 扬建文 |
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| 作者单位： | 吉林大学仪器科学与电气工程学院，桂林工学院资源与环境工程系，温莎大学地球与环境科学系 |
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| 基金项目： | Supported by the Program to Sponsor Teams for Innovation in the Construction of Talent Highlands in Guangxi Institutions of Higher Learning （Grant No. 200508）, and Sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry （Grant No. 200889016）. |
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| 摘 要： | We present a forward-modeling investigation of time-dependent ground magnetometric resistivity （MMR） anomalies associated with transient leachate transport in groundwater systems. Numerical geo-electrical models are constructed based on the hydrological simulation results of leachate plumes from a highly conceptualized landfill system and the resultant MMR responses are computed using a modified finite difference software MMR2DFD. Three transmitter configurations （i.e., single source, MMR-TE, and MMR-TM modes） and two hydrological models （i.e., uniform and faulted porous media） are considered. Our forward modeling results for the uniform porous medium indicates that the magnetic field components perpendicular to the dominant current flow contain the most information of the underground targets and the MMR-TE mode is an appropriate configuration for detecting contaminant plumes. The modeling experiments for the faulted porous medium also confirm that the MMR method is capable of mapping and monitoring the extent of contaminant plumes in aroundwater systems.
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| 关 键 词： | 地球物理学 地下水 污染 研究 方法 |
Time-dependent magnetometric resistivity anomalies of groundwater contamination: Synthetic results from computational hydro-geophysical modeling |
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| Kaiguang?Zhu,Jianwen?Yang.Time-dependent magnetometric resistivity anomalies of groundwater contamination: Synthetic results from computational hydro-geophysical modeling[J].Applied Geophysics,2008,5(4):322-330. |
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| Authors: | Kaiguang Zhu Jianwen Yang |
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| Institution: | (1) College of Instrumentation and Electrical Engineering, Key Laboratory of Geo-Exploration Instrumentation, Ministry of Education, Jilin University, Changchun, 130026, China;(2) Department of Resources and Environmental Engineering, Guilin University of Technology, Guilin, 541004, China;(3) Department of Earth and Environmental Sciences, University of Windsor, Windsor, Ontario, N9B 3P4, Canada |
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| Abstract: | We present a forward-modeling investigation of time-dependent ground magnetometric resistivity (MMR) anomalies associated with transient leachate transport in groundwater systems. Numerical geo-electrical models are constructed based on the hydrological simulation results of leachate plumes from a highly conceptualized landfill system and the resultant MMR responses are computed using a modified finite difference software MMR2DFD. Three transmitter configurations (i.e., single source, MMR-TE, and MMR-TM modes) and two hydrological models (i.e., uniform and faulted porous media) are considered. Our forward modeling results for the uniform porous medium indicates that the magnetic field components perpendicular to the dominant current flow contain the most information of the underground targets and the MMR-TE mode is an appropriate configuration for detecting contaminant plumes. The modeling experiments for the faulted porous medium also confirm that the MMR method is capable of mapping and monitoring the extent of contaminant plumes in groundwater systems. |
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| Keywords: | time-dependent magnetometric resistivity leachate plumes hydro-geophysical modeling |
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