Areas of Interest :
Seismology; Earthquake
sources; Earthquake effects; Hazard mitigation.
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Research Groups :
Seismology
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Education :
Ph.D. : University of Colorado, Boulder; 1992
M.S. : Humboldt State University; 1981
B.A. : University of California San Diego; 1975
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Background :
I manage the Pacific
Northwest Seismic Network, a Tier-1 Regional Seismic Network that is
the authoritative source for information about active seismicity in the
states of Oregon and Washington.
The PNSN (www.pnsn.org) consists of approximately 250 seismic stations
(short period, strong-motion, and broadband) throughout the PacNW. This
venerable and storied network is being upgraded and strengthened, with
new sensors, communication technologies, acquisition and processing
software and hardware, to meet the region's public safety and
scientific needs will into the 21st century.
I came to this position recently, after a dozen years as a professor at
the University of Memphis, in Memphis, TN. In mid-continent I studied
intraplate earthquakes and hazards associated with low-probability
high-impact earthquakes. Much of my effort is currently spent on the
PNSN upgrade, so currently do not teach classes, but hope to find time
to do this when the current frenzy has subsided! I do work with
graduate students individually; a singularly rewarding experience.
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Current Research :
I study earthquakes and their effects. In part with the goal of trying
to mitigate their consequences, and in part with the goal of trying to
understand the physics that govern their occurrence. I am an
observationalist, and never met a data set I couldn't find something of
interest in.
Research projects I am working on currently:
1. Swarm seismicity (field studies of Enola, AR, and Maupin, OR, sequences)
2. Seismic observations of building damage (the Natural Resources Building, in Olympia, WA)
3. Non-linear wave propagation effects during strong ground shaking
4. Aftershock probabilities in the Pacific Northwest
5. Seismicity and seismic wave propagation within the Pacific Northwest
6. Tremor (especially triggered tremor)
7. Combining geodetic and seismic observations
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Graduate Students :
- Andrea Raphael (University of Memphis Ph.D. 2006, now at Exxon-Mobile, Houston)
- Zach Lawrence (University of Memphis Ph.D. 2008, now at Exxon-Mobile, Houston)
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Recent Publications :
Lawrence, Z., P. Bodin, C. A. Langston, F. Pearce, J. Gomberg, P.A. Johnson,
F. Y. Menq, and T. Brackman, 2008, Induced dynamic nonlinear ground response
at Garner Valley, California. Bulletin of the Seismological Society of America,
Vol. 98, No. 3, pp. --, doi: 10.1785/0120070124.
Delorey, A., J. Vidale, J. Steim, P. Bodin, 2008, Broadband Sensor
non-linearity during moderate shaking. Bulletin of the Seismological Society
of America, Vol. 98, No. 3, pp. --.
Gomberg,J., J. L. Rubinstein, Z. Peng, K. C. Creager, J. E. Vidale, P. Bodin,
2008, Widespread Triggering of Nonvolcanic Tremor in California, Science,
Vol. 319. no. 5860, p. 173. DOI: 10.1126/science.1149164. (Originally
published in Science Express on 22 November 2007)
Rubinstein, J. L., J. E. Vidale, J. Gomberg, P. Bodin, K. C. Creager, and
S. D. Malone, 2007, Non-volcanic tremor driven by large transient shear
stresses, Nature 448, 579-582, doi:10.1038/nature06017.
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Last
Modified : 10/09/2008
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