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A comparison of crosshole electrical and seismic data in fractured rock.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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A comparison of crosshole electrical and seismic data in fractured rock. / Herwanger, J.; Worthington, M. H.; Lubbe, R. et al.
In: Geophysical Prospecting, Vol. 52, No. 2, 03.2004, p. 109-121.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Herwanger, J, Worthington, MH, Lubbe, R, Binley, AM & Khazanehdari, J 2004, 'A comparison of crosshole electrical and seismic data in fractured rock.', Geophysical Prospecting, vol. 52, no. 2, pp. 109-121. https://doi.org/10.1046/j.1365-2478.2003.00402.x

APA

Herwanger, J., Worthington, M. H., Lubbe, R., Binley, A. M., & Khazanehdari, J. (2004). A comparison of crosshole electrical and seismic data in fractured rock. Geophysical Prospecting, 52(2), 109-121. https://doi.org/10.1046/j.1365-2478.2003.00402.x

Vancouver

Herwanger J, Worthington MH, Lubbe R, Binley AM, Khazanehdari J. A comparison of crosshole electrical and seismic data in fractured rock. Geophysical Prospecting. 2004 Mar;52(2):109-121. doi: 10.1046/j.1365-2478.2003.00402.x

Author

Herwanger, J. ; Worthington, M. H. ; Lubbe, R. et al. / A comparison of crosshole electrical and seismic data in fractured rock. In: Geophysical Prospecting. 2004 ; Vol. 52, No. 2. pp. 109-121.

Bibtex

@article{604dccdd8eb9488f81709e67ed7a12c0,
title = "A comparison of crosshole electrical and seismic data in fractured rock.",
abstract = "Cross-hole anisotropic electrical and seismic tomograms of fractured metamorphic rock have been obtained at a test site where extensive hydrological data were available. A strong correlation between electrical resistivity anisotropy and seismic compressional-wave velocity anisotropy has been observed. Analysis of core samples from the site reveal that the shale-rich rocks have fabric-related average velocity anisotropy of between 10% and 30%. The cross-hole seismic data are consistent with these values, indicating that observed anisotropy might be principally due to the inherent rock fabric rather than to the aligned sets of open fractures. One region with velocity anisotropy greater than 30% has been modelled as aligned open fractures within an anisotropic rock matrix and this model is consistent with available fracture density and hydraulic transmissivity data from the boreholes and the cross-hole resistivity tomography data. However, in general the study highlights the uncertainties that can arise, due to the relative influence of rock fabric and fluid-filled fractures, when using geophysical techniques for hydrological investigations.",
author = "J. Herwanger and Worthington, {M. H.} and R. Lubbe and Binley, {Andrew M.} and J. Khazanehdari",
year = "2004",
month = mar,
doi = "10.1046/j.1365-2478.2003.00402.x",
language = "English",
volume = "52",
pages = "109--121",
journal = "Geophysical Prospecting",
issn = "0016-8025",
publisher = "Wiley-Blackwell",
number = "2",

}

RIS

TY - JOUR

T1 - A comparison of crosshole electrical and seismic data in fractured rock.

AU - Herwanger, J.

AU - Worthington, M. H.

AU - Lubbe, R.

AU - Binley, Andrew M.

AU - Khazanehdari, J.

PY - 2004/3

Y1 - 2004/3

N2 - Cross-hole anisotropic electrical and seismic tomograms of fractured metamorphic rock have been obtained at a test site where extensive hydrological data were available. A strong correlation between electrical resistivity anisotropy and seismic compressional-wave velocity anisotropy has been observed. Analysis of core samples from the site reveal that the shale-rich rocks have fabric-related average velocity anisotropy of between 10% and 30%. The cross-hole seismic data are consistent with these values, indicating that observed anisotropy might be principally due to the inherent rock fabric rather than to the aligned sets of open fractures. One region with velocity anisotropy greater than 30% has been modelled as aligned open fractures within an anisotropic rock matrix and this model is consistent with available fracture density and hydraulic transmissivity data from the boreholes and the cross-hole resistivity tomography data. However, in general the study highlights the uncertainties that can arise, due to the relative influence of rock fabric and fluid-filled fractures, when using geophysical techniques for hydrological investigations.

AB - Cross-hole anisotropic electrical and seismic tomograms of fractured metamorphic rock have been obtained at a test site where extensive hydrological data were available. A strong correlation between electrical resistivity anisotropy and seismic compressional-wave velocity anisotropy has been observed. Analysis of core samples from the site reveal that the shale-rich rocks have fabric-related average velocity anisotropy of between 10% and 30%. The cross-hole seismic data are consistent with these values, indicating that observed anisotropy might be principally due to the inherent rock fabric rather than to the aligned sets of open fractures. One region with velocity anisotropy greater than 30% has been modelled as aligned open fractures within an anisotropic rock matrix and this model is consistent with available fracture density and hydraulic transmissivity data from the boreholes and the cross-hole resistivity tomography data. However, in general the study highlights the uncertainties that can arise, due to the relative influence of rock fabric and fluid-filled fractures, when using geophysical techniques for hydrological investigations.

U2 - 10.1046/j.1365-2478.2003.00402.x

DO - 10.1046/j.1365-2478.2003.00402.x

M3 - Journal article

VL - 52

SP - 109

EP - 121

JO - Geophysical Prospecting

JF - Geophysical Prospecting

SN - 0016-8025

IS - 2

ER -