Modeling 3-D wave propagation and finite slip for the 1998 Balleny Islands earthquake
We simulate surface waves in a 3-D Earth model using a spectral element method for existing kinematic source models of the M_W 8.1, 25 March 1998 Balleny Islands earthquake. The 3-D model incorporates lateral variations in the crust and mantle on the basis of models Crust2.0 and S20RTS. Our objectiv...
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Language: | English |
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American Geophysical Union
2009
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ftcaltechauth:oai:authors.library.caltech.edu:15500 2023-05-15T15:37:24+02:00 Modeling 3-D wave propagation and finite slip for the 1998 Balleny Islands earthquake Hjörleifsdόttir, V. Kanamori, Hiroo Tromp, Jeroen 2009-03-04 application/pdf https://authors.library.caltech.edu/15500/ https://authors.library.caltech.edu/15500/1/Hjoerleifsdottir2009p61510.10292008JB005975.pdf https://resolver.caltech.edu/CaltechAUTHORS:20090831-145009485 en eng American Geophysical Union https://authors.library.caltech.edu/15500/1/Hjoerleifsdottir2009p61510.10292008JB005975.pdf Hjörleifsdόttir, V. and Kanamori, Hiroo and Tromp, Jeroen (2009) Modeling 3-D wave propagation and finite slip for the 1998 Balleny Islands earthquake. Journal of Geophysical Research B, 114 (b3). B03301. ISSN 0148-0227. doi:10.1029/2008JB005975. https://resolver.caltech.edu/CaltechAUTHORS:20090831-145009485 <https://resolver.caltech.edu/CaltechAUTHORS:20090831-145009485> other Article PeerReviewed 2009 ftcaltechauth https://doi.org/10.1029/2008JB005975 2021-11-11T18:42:49Z We simulate surface waves in a 3-D Earth model using a spectral element method for existing kinematic source models of the M_W 8.1, 25 March 1998 Balleny Islands earthquake. The 3-D model incorporates lateral variations in the crust and mantle on the basis of models Crust2.0 and S20RTS. Our objective is to investigate the fit of the observed and simulated long-period surface waves in the hope of improving on the existing source models. We modify a body wave model determined by Henry et al. (2000) to improve the fit of long-period surface waveforms. We demonstrate that adding a smooth component of slip extending over a fault that connects the two subevents determined by Henry et al. (2000), without invoking slip on multiple fault planes or on unconnected fault patches, provides reasonable fits to long-period surface waves as well as body waves. Article in Journal/Newspaper Balleny Islands Caltech Authors (California Institute of Technology) Balleny Islands Journal of Geophysical Research 114 B3 |
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Open Polar |
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Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
English |
description |
We simulate surface waves in a 3-D Earth model using a spectral element method for existing kinematic source models of the M_W 8.1, 25 March 1998 Balleny Islands earthquake. The 3-D model incorporates lateral variations in the crust and mantle on the basis of models Crust2.0 and S20RTS. Our objective is to investigate the fit of the observed and simulated long-period surface waves in the hope of improving on the existing source models. We modify a body wave model determined by Henry et al. (2000) to improve the fit of long-period surface waveforms. We demonstrate that adding a smooth component of slip extending over a fault that connects the two subevents determined by Henry et al. (2000), without invoking slip on multiple fault planes or on unconnected fault patches, provides reasonable fits to long-period surface waves as well as body waves. |
format |
Article in Journal/Newspaper |
author |
Hjörleifsdόttir, V. Kanamori, Hiroo Tromp, Jeroen |
spellingShingle |
Hjörleifsdόttir, V. Kanamori, Hiroo Tromp, Jeroen Modeling 3-D wave propagation and finite slip for the 1998 Balleny Islands earthquake |
author_facet |
Hjörleifsdόttir, V. Kanamori, Hiroo Tromp, Jeroen |
author_sort |
Hjörleifsdόttir, V. |
title |
Modeling 3-D wave propagation and finite slip for the 1998 Balleny Islands earthquake |
title_short |
Modeling 3-D wave propagation and finite slip for the 1998 Balleny Islands earthquake |
title_full |
Modeling 3-D wave propagation and finite slip for the 1998 Balleny Islands earthquake |
title_fullStr |
Modeling 3-D wave propagation and finite slip for the 1998 Balleny Islands earthquake |
title_full_unstemmed |
Modeling 3-D wave propagation and finite slip for the 1998 Balleny Islands earthquake |
title_sort |
modeling 3-d wave propagation and finite slip for the 1998 balleny islands earthquake |
publisher |
American Geophysical Union |
publishDate |
2009 |
url |
https://authors.library.caltech.edu/15500/ https://authors.library.caltech.edu/15500/1/Hjoerleifsdottir2009p61510.10292008JB005975.pdf https://resolver.caltech.edu/CaltechAUTHORS:20090831-145009485 |
geographic |
Balleny Islands |
geographic_facet |
Balleny Islands |
genre |
Balleny Islands |
genre_facet |
Balleny Islands |
op_relation |
https://authors.library.caltech.edu/15500/1/Hjoerleifsdottir2009p61510.10292008JB005975.pdf Hjörleifsdόttir, V. and Kanamori, Hiroo and Tromp, Jeroen (2009) Modeling 3-D wave propagation and finite slip for the 1998 Balleny Islands earthquake. Journal of Geophysical Research B, 114 (b3). B03301. ISSN 0148-0227. doi:10.1029/2008JB005975. https://resolver.caltech.edu/CaltechAUTHORS:20090831-145009485 <https://resolver.caltech.edu/CaltechAUTHORS:20090831-145009485> |
op_rights |
other |
op_doi |
https://doi.org/10.1029/2008JB005975 |
container_title |
Journal of Geophysical Research |
container_volume |
114 |
container_issue |
B3 |
_version_ |
1766367958847717376 |