Geological realism in hydrogeological and geophysical inverse modeling: A review

Details

Serval ID
serval:BIB_083188F68A76
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Geological realism in hydrogeological and geophysical inverse modeling: A review
Journal
Advances in Water Resources
Author(s)
Linde N., Renard P., Mukerji T., Caers J.
ISSN
0309-1708 (Print)
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
86
Pages
86-101
Language
english
Abstract
Scientific curiosity, exploration of georesources and environmental concerns are pushing the geoscientific research community toward subsurface investigations of ever-increasing complexity. This review explores various approaches to formulate and solve inverse problems in ways that effectively integrate geological concepts with geophysical and hydrogeological data. Modern geostatistical simulation algorithms can produce multiple subsurface realizations that are in agreement with conceptual geological models and statistical rock physics can be used to map these realizations into physical properties that are sensed by the geophysical or hydrogeological data. The inverse problem consists of finding one or an ensemble of such subsurface realizations that are in agreement with the data. The most general inversion frameworks are presently often computationally intractable when applied to large-scale problems and it is necessary to better understand the implications of simplifying (1) the conceptual geological model (e.g., using model compression); (2) the physical forward problem (e.g., using proxy models); and (3) the algorithm used to solve the inverse problem (e.g., Markov chain Monte Carlo or local optimization methods) to reach practical and robust solutions given today's computer resources and knowledge. We also highlight the need to not only use geophysical and hydrogeological data for parameter estimation purposes, but also to use them to falsify or corroborate alternative geological scenarios.
Create date
27/06/2016 10:05
Last modification date
20/08/2019 12:30
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