Self-potential Inversion for the Estimation of Permeability Structure
Self-potential Inversion for the Estimation of Permeability Structure
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DOI：
10.2113/jeeg19.3.193
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发表时间：
2013-03
影响因子：
1
通讯作者：
Yusuke Ozaki;H. Mikada;T. Goto;J. Takekawa
中科院分区：
文献类型：
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作者：
Yusuke Ozaki;H. Mikada;T. Goto;J. Takekawa
自然电位法是一种估算地下水流性质的地球物理方法。渗透率异常对自然电位剖面的影响已在文献中讨论过，但利用自然电位测量来估计渗透率结构的可行性以及自然电位剖面反演结果的分辨率都没有得到太多的关注。在这项研究中，我们开发了一个二维反演代码的渗透率结构估计。我们应用这种反演的一个合成的SP剖面上的地面渗透性结构的影响，以评估SP反演的分辨率。四个模型，其中包括一个渗透率异常位于中心的斜坡，被用来评价反演性能。先验数据，包括分布的流动电流系数，电导率和流量体积在放电和充电，输入到反演。高渗透率水平带。
ABSTRACT The self-potential (SP) method is one geophysical method useful for estimating properties of groundwater flow. The effect of a permeability anomaly on a SP profile has been discussed in the literature, but neither the feasibility of using SP measurements to estimate the permeability structure nor the resolution of the inversion results of an SP profile have been given much attention. In this study, we developed a two-dimensional inversion code for the estimation of permeability structure. We applied this inversion to a synthetic SP profile on the ground surface affected by the permeability structure to evaluate the resolution of the SP inversion. Four models, which include a permeability anomaly located in the center of a slope, are used for the evaluation of the inversion performance. A priori data, including the distribution of the streaming current coefficient, electrical conductivity and flux volume at the discharge and recharge, are input to the inversion. A horizontal zone with high permeab...