A fully coupled hydrogeophysical inversion strategy for the calibration of groundwater models using geophysical data

A. Gonzalez Quiros, J. Comte

Research output: Chapter in Book/Report/Conference proceedingPublished conference contribution

1 Citation (Scopus)

Abstract

The scarcity of direct hydrogeological data, such as hydraulic levels measured in boreholes, is an important limitation for the calibration of groundwater models. By using geophysical data it is possible to use additional datasets to inform hydrogeological models. However, it has been observed that the use of indirect geophysical-derived data has practical limitations derived from the characteristics of the stand-alone geophysical inversion and the selection and application of the petrophysical relationships. A proposed way forward is the use of fully coupled modelling and inversion strategy where both problems are solved simultaneously finding better correspondence in the resolved distribution of geological properties. In this work we present a fully coupled and inversion strategy implemented using PEST and COMSOL Multiphysics. Following this approach it is possible to calibrate a groundwater model with multiple hydrogeological and geophysical datasets, such as from electromagnetic or gravity surveys. As an example we apply the methodology for the calibration of an heterogeneous coastal aquifer with a saltwater intrusion problem using electrical resistivity data.

Original languageEnglish
Title of host publication26th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience 2020
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Pages1-5
ISBN (Electronic)9789462823556
DOIs
Publication statusPublished - 7 Dec 2020
Event26th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience 2020 - Virtual, Online
Duration: 7 Dec 20208 Dec 2020

Publication series

Name26th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience 2020

Conference

Conference26th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience 2020
CityVirtual, Online
Period7/12/208/12/20

Bibliographical note

Publisher Copyright:
© 2019 EAGE.

Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.

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