Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 21 October 1983:
Vol. 222. no. 4621, pp. 322 - 325
DOI: 10.1126/science.222.4621.322
Prev | Table of Contents | Next

Articles

Tilt and Seismicity Changes in the Shumagin Seismic Gap

J. BEAVAN 1, E. HAUKSSON 1, S. R. MCNUTT 2, R. BILHAM 3, and K. H. JACOB 3

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

Changes in the ground surface tilt and in the rate of seismicity indicate that an aseismic deformation event may have occurred between 1978 and 1980 along the plate boundary in the eastern Aleutians, Alaska, within the Shumagin seismic gap. Pavlof Volcano was unusually quiescent during this period. The proposed event would cause an increase of stress on the shallow locked portion of the plate boundary, bringing it closer to rupture in a great earthquake.

Submitted on March 4, 1983
Revised on May 27, 1983


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
14 February 1983 earthquake sequence in the Shumagin Islands, Alaska.
J. J. TABER and J. BEAVAN (1986)
Bulletin of the Seismological Society of America 76, 1588-1596
   Abstract »    PDF »
Strain Accumulation in the Shumagin and Yakataga Seismic Gaps, Alaska.
J. C. Savage, J. C. SAVAGE, M. LISOWSKI, and W. H. PRESCOTT (1986)
Science 231, 585-587
   Abstract »    PDF »
Seismicity patterns (1963-1983) as stress indicators in the Shumagin seismic gap, Alaska.
E. HAUKSSON, J. ARMBRUSTER, and S. Dobbs (1984)
Bulletin of the Seismological Society of America 74, 2541-2558
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)