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 18 April 2003:
Vol. 300. no. 5618, pp. 478 - 480
DOI: 10.1126/science.1082205
Prev | Table of Contents | Next

Reports

Mantle Fault Zone Beneath Kilauea Volcano, Hawaii

Cecily J. Wolfe,1* Paul G. Okubo,2 Peter M. Shearer3

Relocations and focal mechanism analyses of deep earthquakes (>=13 kilometers) at Kilauea volcano demonstrate that seismicity is focused on an active fault zone at 30-kilometer depth, with seaward slip on a low-angle plane, and other smaller, distinct fault zones. The earthquakes we have analyzed predominantly reflect tectonic faultingin the brittle lithosphere rather than magma movement associated with volcanic activity. The tectonic earthquakes may be induced on preexisting faults by stresses of magmatic origin, although background stresses from volcano loading and lithospheric flexure may also contribute.

1 Hawaii Institute of Geophysics and Planetology, University of Hawaii at Manoa, Honolulu, HI96822, USA.
2 Hawaiian Volcano Observatory, U.S. Geological Survey, Hawaii National Park, HI96718, USA.
3 Scripps Institution of Oceanography, University of California at San Diego, La Jolla, CA 92093–0225, USA.

* To whom correspondence should be addressed. E-mail: wolfe{at}hawaii.edu

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Southern California Hypocenter Relocation with Waveform Cross-Correlation, Part 2: Results Using Source-Specific Station Terms and Cluster Analysis.
P. Shearer, E. Hauksson, and G. Lin (2005)
Bulletin of the Seismological Society of America 95, 904-915
   Abstract »    Full Text »    PDF »


To Advertise     Find Products

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