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2009 Portland GSA Annual Meeting (18-21 October 2009)

Session No. 83
Monday, 19 October 2009: 8:00 AM-12:00 PM
A105 (Oregon Convention Center)

T75. Slow Slip and Non-Volcanic Seismic Tremor in Cascadia and Beyond: Observations, Models, and Hazard Implications

GSA Structural Geology and Tectonics Division

 

M. Maceira, J. Rubinstein, E. Roeloffs and C. Larmat, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:05 AM
SLEUTHING SLOW SLIP PHENOMENA
GOMBERG, Joan, USGS, Seattle, WA 98195, SCHULZ, William, U.S. Geological Survey, Box 2504 MS 966, Denver, CO 80225, BODIN, Paul, Earth & Space Sciences, University of Washington, Seattle, WA 98195, WECH, Aaron, Alaska Volcano Observatory, U.S. Geological Survey, 4230 University Drive, Anchorage, AK 99508, BÜRGMANN, Roland, Univ California - Berkeley, 385 McCone Hall, Berkeley, CA 94720-4768, KEAN, Jason W., U.S. Geological Survey, P.O. Box 25046, Denver Federal Center, Denver, CO 80225, MACQUEEN, Patricia, University of Oregon, Eugene, OR 97403 and FOSTER, Katherine, University of California San Diego, San Dielgo, CA 92093, gomberg@usgs.gov, gomberg@usgs.gov
2
8:25 AM
CASCADIA ETS CONSTRAINTS FROM GPS AND SEISMIC ARRAYS
MELBOURNE, Timothy, Geological Sciences, Central Washington University, 400 E University Way, Ellensburg, WA 98926, tim@geology.cwu.edu, tim@geology.cwu.edu
3
8:45 AM
SPATIAL AND TEMPORAL RELATIONSHIP OF SLOW-SLIP AND NON-VOLCANIC TREMOR IN CASCADIA
MCCAFFREY, Robert1, KING, Robert W.2, BRUDZINSKI, Michael3 and BOYARKO, Devin3, (1)Earth & Environmental Sciences, Rensselaer Polytechnic Institute, Troy, NY 12180, (2)EAPS, Massachusetts Institute of Technology, Cambridge, MA 02139, (3)Geology Department, Miami University, 114 Shideler Hall, Oxford, OH 45056, mccafr@rpi.edu, mccafr@rpi.edu
4
9:00 AM
TREMOR PATCHES AND STREAKS IN CASCADIA
GHOSH, Abhijit1, VIDALE, John E.2, SWEET, Justin R.1, CREAGER, Kenneth C.1 and WECH, Aaron G.1, (1)Earth & Space Sciences, University of Washington, Seattle, WA 98195-1310, (2)Earth & Space Sciences, University of Washington, Johnson Hall Rm-070 Box 351310, 4000 15th Avenue NE, Seattle, WA 98195, aghosh.earth@gmail.com, aghosh.earth@gmail.com
5
9:15 AM
MAPPING THE JUAN DE FUCA SLAB BENEATH THE CASCADIA MARGIN
MCCRORY, Patricia A.1, BLAIR, J. Luke1 and WALDHAUSER, Felix2, (1)U.S. Geological Survey, Menlo Park, CA 94025, (2)Lamont-Doherty Earth Observatory, Palisades, NY 10964, pmccrory@usgs.gov, pmccrory@usgs.gov
6
9:30 AM
DETAILS OF TRANSIENT STRAIN DURING AND BETWEEN NORTHERN CASCADIA EPISODIC TREMOR AND SLIP EVENTS FROM PLATE BOUNDARY OBSERVATORY BOREHOLE STRAINMETERS
ROELOFFS, Evelyn1, MCCAUSLAND, Wendy1 and SILVER, Paul G.2, (1)U.S. Geological Survey, Vancouver, WA 98693, (2)Department of Terrestrial Magnetism, Carnegie Institution of Washington, 5241 Broad Branch Road, NW, Washington, DC 20015, evelynr@usgs.gov, evelynr@usgs.gov
7
9:45 AM
ESTIMATED EFFECTS OF EPISODIC SLOW SLIP ON THE OCCURRENCE AND PROBABILITY OF GREAT EARTHQUAKES IN CASCADIA
BEELER, N.M., US Geological Survey, Cascades Observatory, 1300 Cardinal Court, Bldg 10 Suite 100, Vancouver, WA 98683, nbeeler@usgs.gov, nbeeler@usgs.gov
 
10:05 AM
Break
8
10:20 AM
EPISODIC TREMOR AND SLIP ALONG THE OAXACA SEGMENT OF THE MIDDLE AMERICA SUBDUCTION ZONE AND COMPARISONS TO CASCADIA AND NANKAI
BRUDZINSKI, Michael1, SCHLANSER, Kristen1, HINOJOSA-PRIETO, Hector1, CABRAL-CANO, Enrique2, ARCINIEGA-CEBALLOS, Alejandra3, DIAZ-MOLINA, Oscar2 and DEMETS, Charles4, (1)Geology Department, Miami University, 114 Shideler Hall, Oxford, OH 45056, (2)Departamento de Geomagnetismo y Exploración, Instituto de Geofísica, Universidad Nacional Autónoma de México, México D.F, 04510, Mexico, (3)Departamento de Vulcanología, Instituto de Geofísica, Universidad Nacional Autónoma de México, México D.F, 04510, Mexico, (4)The Department of Geoscience, University of Wisconson - Madison, 1215 W Dayton St, Madison, WI 53706, brudzimr@miamioh.edu, brudzimr@miamioh.edu
9
10:35 AM
LOCATION AND CHARACTERIZATION OF CALIFORNIA NON-VOLCANIC TREMOR USING TIME REVERSAL, INVESTIGATION OF DIFFERENT IMAGING FIELDS
LARMAT, C.1, JOHNSON, Paul A.1 and GUYER, Robert A.2, (1)EES-17, Geophysics Group, Los Alamos National Laboratory, MS D443, Los Alamos, NM 87545, (2)Department of Physics, University of Nevada, 1664 N VIRGINIA ST, Reno, NV 89557, carene@lanl.gov, carene@lanl.gov
10
10:50 AM
LOW FREQUENCY EARTHQUAKE DETECTIONS FROM TREMOR IN THE NORTHERN CASCADIA MARGIN
BROWN, Justin and BEROZA, Gregory, Department of Geophysics, Stanford University, 397 Panama Mall, Stanford, CA 94305, jrbrown5@stanford.edu, jrbrown5@stanford.edu
11
11:05 AM
IDENTIFICATION OF LOW-FREQUENCY EARTHQUAKES ON NON-VOLCANIC TREMOR VALIDATED WITH THE SUBSPACE DETECTOR METHOD
MACEIRA, Monica, EES-GEO, MS D443, Los Alamos National Laboratory, Los Alamos, NM 87545, ROWE, Charlotte A., Ees-GEO, MS D443, Los Alamos National Laboratory, Los Alamos, NM 87545 and BEROZA, Gregory, Department of Geophysics, Stanford University, 397 Panama Mall, Stanford, CA 94305, mmaceira@lanl.gov, mmaceira@lanl.gov
12
11:20 AM
BURSTS AND WAVES: THE RESPONSE OF NON-VOLCANIC TREMOR TO EXTERNAL STRESSING
RUBINSTEIN, J., U.S. Geological Survey, Menlo Park, CA 94025, jrubinstein@usgs.gov, jrubinstein@usgs.gov
13
11:35 AM
EFFECTS OF ACOUSTIC WAVES ON STICK—SLIP BEHAVIOR IN SHEARED GRANULAR MEDIA WITH IMPLICATIONS TO DYNAMIC EARTHQUAKE TRIGGERING AND SLOW SLIP
JOHNSON, Paul A., EES-17, Geophysics Group, Los Alamos National Laboratory, MS D443, Los Alamos, NM 87545, MARONE, Chris, Geosciences, Penn State University, 503 Deike Building, University Park, PA 16802, BEHRINGER, Bob, Physics, Duke University, Physics Department, Durham, NC 27708-0305 and GUYER, Robert A., Department of Physics, University of Nevada, 1664 N VIRGINIA ST, Reno, NV 89557, paj@lanl.gov, paj@lanl.gov
 
11:50 AM
Discussion
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