Combined Inversion of Land and Marine Electrical Resistivity Tomography for Submarine Groundwater Discharge and Saltwater Intrusion Characterization
Combined Inversion of Land and Marine Electrical Resistivity Tomography for Submarine Groundwater Discharge and Saltwater Intrusion Characterization
复制标题
陆地和海洋电阻率层析成像联合反演用于海底地下水排放和盐水入侵表征
DOI：
10.1029/2019gl085877
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发表时间：
2020
影响因子：
5.2
通讯作者：
M. Paepen
中科院分区：
文献类型：
--
作者：
T. Hermans;M. Paepen
电阻率层析成像（ERT）特别适合于表征盐水入侵和海底淡水排放，因为它对孔隙水的电导率很敏感。一项全面的调查可能会结合联合收割机在低潮期间收集的陆地ERT和海洋ERT，由于海水层的存在，海洋ERT的灵敏度较低，最常见的是，分别倒置。在这方面的贡献，我们提出了一种新的方法来联合反演陆地和海洋ERT收购沿着相同的配置文件，使他们在高潮的共同情况。我们首先估计了地面剖面下的电阻率分布。然后，我们计算陆地ERT的校正数据集，模拟在与海洋ERT相同的水位下收集的数据集。最后，陆地和海洋ERT数据集联合反演。我们表明，该方法可以更好地反映整个海岸线的淡水/盐水分布。
Electrical resistivity tomography (ERT) is particularly suited for the characterization of saltwater intrusion and submarine freshwater discharge, given its sensitivity to the electrical conductivity of pore water. A comprehensive survey might combine land ERT collected during low tide and marine ERT acquired with lower sensitivity due to the presence of a seawater layer, most often, inverted separately. In this contribution, we propose a new methodology to jointly invert land and marine ERT acquired along a same profile, bringing them to a common situation at high tide. We first estimate the electrical resistivity distribution under the land profile. Then, we compute a corrected data set for land ERT, simulating a data set collected with the same level of water as the marine ERT. Finally, both land and marine ERT data sets are inverted jointly. We show that the approach allows to better image the freshwater/saltwater distribution across the shoreline.
影响因子：
2
作者：
Loke, M. H.;Chambers, J. E.;Wilkinson, P. B.
通讯作者：
Wilkinson, P. B.