| Abstract: | We have developed a community velocity model for the Pacific Northwest region from northern California to southern Canada and carried out the first 3D simulation of a Mw 9.0 megathrust earthquake rupturing along the Cascadia subduction zone using a parallel supercomputer. A long-period (<0.5 Hz) source model was designed by mapping the inversion results for the December 26, 2004 Sumatra–Andaman earthquake (Han et al., Science 313(5787):658–662, 2006) onto the Cascadia subduction zone. Representative peak ground velocities for the metropolitan centers of the region include 42 cm/s in the Seattle area and 8–20 cm/s in the Tacoma, Olympia, Vancouver, and Portland areas. Combined with an extended duration of the shaking up to 5 min, these long-period ground motions may inflict significant damage on the built environment, in particular on the highrises in downtown Seattle. |
| Genre: | Article |
| ProdID: | 70032133 |
| Citation Author: | Olsen, K. B.; Stephenson, W. J.; Geisselmeyer, A. |
| Citation Contributing Office: | Earthquake Hazards Program |
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| Citation End Page: | 159 |
| Citation Issue: | 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Seismology |
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| Citation Phsyical Description: | 15 p. |
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| Citation Publisher: | Springer |
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| Citation Search Results Text: | 3D crustal structure and long-period ground motions from a M9.0 megathrust earthquake in the Pacific Northwest region; 2008; Article; Journal; Journal of Seismology; Olsen, K. B.; Stephenson, W. J.; Geisselmeyer, A. |
| Citation Start Page: | 145 |
| Citation Volume: | 12 |
| Citation Year: | 2008 |
| Type: | citation/reference |
| Text: | 3D crustal structure and long-period ground motions from a M9.0 megathrust earthquake in the Pacific Northwest region; 2008; Article; Journal; Journal of Seismology; Olsen, K. B.; Stephenson, W. J.; Geisselmeyer, A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1007/s10950-007-9082-y |
| Date Other: | Tue, 1 Jan 2008 00:00 -0600 |
| Publisher: | Springer |
