Inversion of multiple intersecting high-resolution crosshole GPR profiles for hydrological characterization at the Boise Hydrogeophysical Research Site

Détails

ID Serval
serval:BIB_D1BEC4620885
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Inversion of multiple intersecting high-resolution crosshole GPR profiles for hydrological characterization at the Boise Hydrogeophysical Research Site
Périodique
Journal of Applied Geophysics
Auteur(s)
Dafflon B., Irving J., Barrash W.
ISSN-L
0926-9851
Statut éditorial
Publié
Date de publication
2011
Peer-reviewed
Oui
Volume
73
Pages
305-314
Langue
anglais
Notes
Dafflon2011
Résumé
The integration of geophysical data into the subsurface characterization
problem has been shown in many cases to significantly improve hydrological
knowledge by providing information at spatial scales and locations
that is unattainable using conventional hydrological measurement
techniques. In particular, crosshole ground-penetrating radar (GPR)
tomography has shown much promise in hydrology because of its ability
to provide highly detailed images of subsurface radar wave velocity,
which is strongly linked to soil water content. Here, we develop
and demonstrate a procedure for inverting together multiple crosshole
GPR data sets in order to characterize the spatial distribution of
radar wave velocity below the water table at the Boise Hydrogeophysical
Research Site (BHRS) near Boise, Idaho, USA. Specifically, we jointly
invert 31 intersecting crosshole GPR profiles to obtain a highly
resolved and consistent radar velocity model along the various profile
directions. The model is found to be strongly correlated with complementary
neutron porosity-log data and is further corroborated by larger-scale
structural information at the BHRS. This work is an important prerequisite
to using crosshole GPR data together with existing hydrological measurements
for improved groundwater flow and contaminant transport modeling.
Mots-clé
GPR, Hydrogeophysics, Crosshole tomography, Inversion
Création de la notice
25/11/2013 18:31
Dernière modification de la notice
20/08/2019 16:51
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