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Science 22 May 1998:
Vol. 280. no. 5367, pp. 1245 - 1249
DOI: 10.1126/science.280.5367.1245
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Reports

Viscosity of Oceanic Asthenosphere Inferred from Remote Triggering of Earthquakes

Fred F. Pollitz, Roland Bürgmann, Barbara Romanowicz

A sequence of large interplate earthquakes from 1952 to 1965 along the Aleutian arc and Kurile-Kamchatka trench released accumulated stresses along nearly the entire northern portion of the Pacific Plate boundary. The postseismic stress evolution across the northern Pacific and Arctic basins, calculated from a viscoelastic coupling model with an asthenospheric viscosity of 5 × 1017 pascal seconds, is consistent with triggering of oceanic intraplate earthquakes, temporal patterns in seismicity at remote plate boundaries, and space-based geodetic measurements of anomalous velocity over an area 7000 by 7000 kilometers square during the 30-year period after the sequence.

F. F. Pollitz and R. Bürgmann, Department of Geology, University of California, Davis, Davis, CA 95616, USA.
B. Romanowicz, University of California Seismological Laboratory, 475 McCone Hall, Berkeley, CA 94720, USA.

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Long-Term Influence of Giant Earthquakes: Backward Empirical Evidence and Forward Test.
W. Marzocchi and J. Selva (2008)
Bulletin of the Seismological Society of America 98, 1102-1112
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Late Holocene Rupture of the Northern San Andreas Fault and Possible Stress Linkage to the Cascadia Subduction Zone.
C. Goldfinger, K. Grijalva, R. Burgmann, A. E. Morey, J. E. Johnson, C. H. Nelson, J. Gutierrez-Pastor, A. Ericsson, E. Karabanov, J. D. Chaytor, et al. (2008)
Bulletin of the Seismological Society of America 98, 861-889
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Global kinematics in deep versus shallow hotspot reference frames.
M. Cuffaro and C. Doglioni (2007)
Geological Society of America Special Papers 430, 359-374
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Geodynamic connection between the indentation of Arabia and the Neogene tectonics of the central-eastern Mediterranean region.
E. Mantovani, M. Viti, D. Babbucci, C. Tamburelli, and D. Albarello (2006)
Geological Society of America Special Papers 409, 15-41
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The westward drift of the lithosphere: A rotational drag?.
B. Scoppola, D. Boccaletti, M. Bevis, E. Carminati, and C. Doglioni (2006)
Geological Society of America Bulletin 118, 199-209
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Stress Distribution along the Fairweather-Queen Charlotte Transform Fault System.
C. G. Bufe (2005)
Bulletin of the Seismological Society of America 95, 2001-2008
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Evidence for a Global Seismic-Moment Release Sequence.
C. G. Bufe and D. M. Perkins (2005)
Bulletin of the Seismological Society of America 95, 833-843
   Abstract »    Full Text »    PDF »
Stress Transfer to the Denali and Other Regional Faults from the M 9.2 Alaska Earthquake of 1964.
C. G. Bufe (2004)
Bulletin of the Seismological Society of America 94, S145-S155
   Abstract »    Full Text »    PDF »
Stress Triggering of the 1999 Hector Mine Earthquake by Transient Deformation Following the 1992 Landers Earthquake.
(2002)
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Science. ISSN 0036-8075 (print), 1095-9203 (online)