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Science 19 December 1980:
Vol. 210. no. 4476, pp. 1343 - 1345
DOI: 10.1126/science.210.4476.1343
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Articles

Rupture Zones of Great Earthquakes in the Alaska-Aleutian Arc, 1784 to 1980

LYNN R. SYKES 1, JEROME B. KISSLINGER 2, LEIGH HOUSE 3, JOHN N. DAVIES 2, and KLAUS H. JACOB 2

1 Lamont-Doherty Geological Observatory, Palisades, New York 10964 and Department of Geological Sciences, Columbia University, New York 10027
2 Lamont-Doherty Geological Observatory
3 Lamont-Doherty Geological Observatory, and Department of Geological Sciences, Columbia University

Historical documents indicate that great earthquakes ruptured at least a 500-kilometer-long segment of the plate boundary near the Alaska Peninsula in 1788 and 1847. At least half of a major seismic gap in the Shumagin Islands ruptured during those shocks but has not experienced a great earthquake for at least 77 years. Large shocks along this and other plate boundaries occur in bursts followed by several decades during which there is very little energy release.

Submitted on March 10, 1980
Revised on June 30, 1980


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Variable rupture mode of the subduction zone along the Ecuador-Colombia coast.
H. KANAMORI and K. C. MCNALLY (1982)
Bulletin of the Seismological Society of America 72, 1241-1253
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Science. ISSN 0036-8075 (print), 1095-9203 (online)