Relation between the subducting plate and seismicity associated with the great 1964 Alaska earthquake
von Huene, R.; Klaeschen, D.; Fruehn, J. (1999). Relation between the subducting plate and seismicity associated with the great 1964 Alaska earthquake, in: Sauber, J. et al. Seismogenic and tsunamigenic processes in shallow subduction zones. Pure and Applied Geophysics, 154(3-4): pp. 575-591. https://dx.doi.org/10.1007/978-3-0348-8679-6_10
In: Sauber, J.; Dmowska, R. (Ed.) (1999). Seismogenic and tsunamigenic processes in shallow subduction zones. e-Book edition. Pure and Applied Geophysics, 154(3-4). Springer: Basel. ISBN 978-3-0348-8679-6. vi, 405-776 pp. https://dx.doi.org/10.1007/978-3-0348-8679-6, more
In: Pure and Applied Geophysics. Birkhäuser: Basel. ISSN 0033-4553; e-ISSN 1420-9136, more
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Alaska earthquakes tectonics earthquake segmentation |
| Authors | | Top |
- von Huene, R.
- Klaeschen, D.
- Fruehn, J.
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| Abstract |
Tectonic studies of the great 1964 Alaska earthquake have underappreciated the nature of the subducted plate in influencing seismicity. We compare seismological observations in the Prince William and Kodiak areas that ruptured during this earthquake with the corresponding morphology and structure of the subducting plate. The upper plate geology (Prince William Terrane) and velocity structure are the same in both areas. In the Prince William area where the Yakutat Terrane subducted the energy released and coupling were stronger than above the Kodiak subduction zone where thick trench sediment subducts. The conjecture that lower plate character or the amount of subducted sediment affects coupling helps explain variability in seismology, geodetic inversions and the horizontal velocity of GPS stations. |
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