The Mw 6.7 George Sound earthquake of October 15, 2007
Item
Title (Dublin Core)
en-US
The Mw 6.7 George Sound earthquake of October 15, 2007
Description (Dublin Core)
en-US
The Mw 6.7 George Sound earthquake of October 15, 2007, occurred only a few kilometres offshore of Fiordland, within a region where the subduction zone of the Australian Plate beneath the Pacific Plate intersects the offshore extension of the Alpine Fault. Rapid response deployments of portable seismographs, a strong motion recorder and GPS receivers relatively close to the epicentre soon after the main shock allowed us to relate the event to thrusting at the subduction interface. The main shock moment tensor solution places the event at a shallow depth of 21 km. The sequence of aftershocks that followed the main event presents predominantly reverse faulting mechanisms with depths of 20 to 25 km. Earthquake re-locations using data recorded by the portable seismometers reveal a cluster of aftershocks at 17 to 25 km. This cluster defines a steeply SE-dipping plane, while another cluster at about 7-12 km depth images a NW-dipping plane within the overlying plate. Preliminary results from the seismic, geodetic and near-field strong motion geophysical data are consistent with rupture on an east dipping fault plane, presumed to be the subduction interface.
Creator (Dublin Core)
Petersen, Tanja
Ristau, John
Beavan, John
Denys, Paul
Denham, Mike
Field, Bryan
François-Holden, Caroline
McCaffrey, Rob
Palmer, Neville
Reyners, Martin
Samsonov, Sergey
The GeoNet team
Publisher (Dublin Core)
en-US
New Zealand Society for Earthquake Engineering
Date (Dublin Core)
2009-06-30
Type (Dublin Core)
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
en-US
Article
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
https://bulletin.nzsee.org.nz/index.php/bnzsee/article/view/307
10.5459/bnzsee.42.2.129-141
Source (Dublin Core)
en-US
Bulletin of the New Zealand Society for Earthquake Engineering; Vol 42 No 2 (2009); 129-141
2324-1543
1174-9857
Language (Dublin Core)
eng
Relation (Dublin Core)
https://bulletin.nzsee.org.nz/index.php/bnzsee/article/view/307/293
Rights (Dublin Core)
en-US
Copyright (c) 2009 Tanja Petersen, John Ristau, John Beavan, Paul Denys, Mike Denham, Bryan Field, Caroline François-Holden, Rob McCaffrey, Neville Palmer, Martin Reyners, Sergey Samsonov, The GeoNet team
en-US
https://creativecommons.org/licenses/by/4.0
