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https://hdl.handle.net/2440/13699
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dc.contributor.author | Squire, S. | - |
dc.contributor.author | Hillis, R. | - |
dc.contributor.author | Rutty, M. | - |
dc.date.issued | 1995 | - |
dc.identifier.citation | Exploration Geophysics, 1995; 26(2-3):202-205 | - |
dc.identifier.issn | 0812-3985 | - |
dc.identifier.issn | 1834-7533 | - |
dc.identifier.uri | http://hdl.handle.net/2440/13699 | - |
dc.description.abstract | Abstract A seismic experiment was undertaken in order to investigate the effect of an observed (outcropping) fracture set on shear-wave propagation, and more specifically whether the observed fracture set induced shear-wave birefringence. The source for the experiment was a hammer swung to impact horizontally on a source block coupled to the ground by two large metal pins. Eight three-component geophones recorded arrivals up to 40m offset from the hammer source. Impacts of opposite polarity in the in-line and cross-line direction were differenced in order to maximise S-wave, and minimise P-wave energy. After vector gain, filtering and rotation of the recorded data into in-line and cross-line directions, Alford rotation was undertaken on selected windowed events in order to detect shear-wave birefringence. In-line and cross-line energy is maximised by a co-ordinate rotation to the north?south direction, parallel to the observed fracture direction, suggesting that the observed fracture direction results in an anisotropy that induces shear-wave birefringence. | - |
dc.language.iso | en | - |
dc.publisher | Australian Society Exploration Geophysicists - CSIRO | - |
dc.source.uri | http://www.publish.csiro.au/?act=view_file&file_id=EG995202.pdf | - |
dc.subject | Shear-wave birefringence | - |
dc.subject | fracture direction | - |
dc.subject | hammer source experiment | - |
dc.title | Hammer-induced seismic investigations in an area of observed anisotropy | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1071/EG995202 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Hillis, R. [0000-0002-5222-7413] | - |
Appears in Collections: | Aurora harvest 2 Geology & Geophysics publications |
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