| Tiny earthquakes
hint at larger shocks
The timing of
carbon-copy microquakes tells when stress is building along the San
Andreas fault.
References:
Nadeau, R.M.,
and T.V. McEvilly. 1999. Fault slip rates at depth from recurrence
intervals of repeating microearthquakes. Science 285(July
30):718.
Further Readings:
Monastersky, R.
1997. The overdue quake. Science News 152(July 5):8.
Tullis, T.E. 1999.
Deep slip rates on the San Andreas fault. Science 285(July
30):671.
Sources:
William L.
Ellsworth
U.S. Geological Survey
345 Middlefield Road, MSC 977
Building 3A, Room 3A-109
Menlo Park, CA 94025
Thomas V.
McEvilly
University of California, Berkeley
Earth Sciences Division
Lawrence Berkeley National Laboratory
Berkeley, CA 94720
Robert M. Nadeau
University of California, Berkeley
Earth Sciences Division
Lawrence Berkeley National Laboratory
Berkeley, CA 94720
From Science
News, Vol. 156, No. 5, July 31, 1999, p. 71. Copyright © 1999,
Science Service. |