气候变化领域集成服务门户(CCPortal): Combined Inversion of Land and Marine Electrical Resistivity Tomography for Submarine Groundwater Discharge and Saltwater Intrusion Characterization

CCPortal

DOI	10.1029/2019GL085877
	Combined Inversion of Land and Marine Electrical Resistivity Tomography for Submarine Groundwater Discharge and Saltwater Intrusion Characterization
	Hermans T.; Paepen M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	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. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Electric conductivity; Groundwater; Salt water intrusion; Submarines; combined inversion; Electrical conductivity; Electrical resistivity tomography; Freshwater discharge; Freshwater/saltwater; Pore waters; Resistivity distributions; Submarine groundwater discharge; Discharge (fluid mechanics); electrical conductivity; electrical resistivity; estuarine front; groundwater; saline intrusion
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170802
作者单位	Department of Geology, Ghent University, Ghent, Belgium
推荐引用方式 GB/T 7714	Hermans T.,Paepen M.. Combined Inversion of Land and Marine Electrical Resistivity Tomography for Submarine Groundwater Discharge and Saltwater Intrusion Characterization[J],2020,47(3).
APA	Hermans T.,&Paepen M..(2020).Combined Inversion of Land and Marine Electrical Resistivity Tomography for Submarine Groundwater Discharge and Saltwater Intrusion Characterization.Geophysical Research Letters,47(3).
MLA	Hermans T.,et al."Combined Inversion of Land and Marine Electrical Resistivity Tomography for Submarine Groundwater Discharge and Saltwater Intrusion Characterization".Geophysical Research Letters 47.3(2020).