T028:
New Insights On The Cascadia Subduction Zone From Offshore And Amphibious Studies





Session ID#: 24812

Session Description:
Subduction zones, one of Earth’s fundamental tectonic environments, play a key role in many Earth processes. Consequently, they require study by interdisciplinary methods. However, our understanding of subduction zones has been limited by a lack of offshore and amphibious data. At the Cascadia subduction zone, new data collected over the last several years have helped close this gap, elucidating a wide range of new insights, including the structure of the incoming lithosphere, the role of water and volatiles in the subducting plate, asthenospheric flow above and below the subducting lithosphere, the transition from locking to slipping behavior along the plate interface, and the nature of episodic tremor and slip. We invite contributions broadly related to Cascadia geoscience that focus on new results from seismology, magnetotellurics, geodesy, geodynamics, hazards, paleoseismology, geochemisty and petrology, with particular emphasis on insights gained from the contribution of offshore and amphibious data.
Primary Convener:  Helen A Janiszewski, Columbia University of New York, Palisades, NY, United States
Conveners:  William Bythewood Hawley, University of California Berkeley, Berkeley, CA, United States, Kerry Key, Institute of Geophysics and Planetary Physics La Jolla, La Jolla, CA, United States and Matthew James Cook, Scripps Institution of Oceanography, La Jolla, CA, United States
Co-Organized with:
Tectonophysics, and Seismology

Cross-Listed:
  • G - Geodesy
  • GP - Geomagnetism, Paleomagnetism and Electromagnetism
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

1209 Tectonic deformation [GEODESY AND GRAVITY]
3006 Marine electromagnetics [MARINE GEOLOGY AND GEOPHYSICS]
3050 Ocean observatories and experiments [MARINE GEOLOGY AND GEOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Michael Everett Mann1, Geoffrey A Abers1, Kenneth C Creager2, Carl W Ulberg3 and Kayla Crosbie1, (1)Cornell University, Ithaca, NY, United States, (2)Applied Physics Laboratory University of Washington, Seattle, WA, United States, (3)University of Washington, Seattle, WA, United States
Matthew James Cook1, Glenn S Sasagawa2, Emily C Roland3, David A Schmidt4, William S D Wilcock5 and Mark A Zumberge2, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Univ California San Diego, La Jolla, CA, United States, (3)USGS Alaska Science Center, Anchorage, AK, United States, (4)University of Washington, Department of Earth and Space Sciences, Seattle, WA, United States, (5)University of Washington, School of Oceanography, Seattle, WA, United States
Quentin Bletery1, Wenyuan Fan2, Helen A Janiszewski3, Emerson Lynch4, Kimberly A McCormack5, Noah John Phillips6, Baptiste Rousset7, Caroline Seyler6, Yen Joe Tan8, Melodie E French9, James B Gaherty3 and Christine Regalla4, (1)University of Oregon, Eugene, OR, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)Columbia University in the City of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States, (4)Boston University, Earth and Environment, Boston, MA, United States, (5)University of Texas at Austin, Austin, TX, United States, (6)McGill University, Montreal, QC, Canada, (7)University of California Berkeley, Earth and Planetary Sciences Department, Berkeley, CA, United States, (8)Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, (9)Rice University, Department of Earth, Environmental and Planetary Sciences, Houston, TX, United States
Rose Hilmo, University of Washington Seattle Campus, Seattle, WA, United States, William S D Wilcock, University of Washington, School of Oceanography, Seattle, WA, United States, Emily C Roland, USGS Alaska Science Center, Anchorage, AK, United States, Paul Bodin, University of Washington, Seattle, WA, United States and Jon Connolly, Pacific Northwest Seismic Network, Seattle, WA, United States
Brandon Paul VanderBeek, University of Oregon, Eugene, OR, United States and Douglas R Toomey, University of Oregon, Earth Sciences, Eugene, OR, United States
Timothy H Dixon1, Surui Xie1, Rocco Malservisi1, Chad Lembke2, Giovanni Iannaccone3, Jason Law2, Mel Rodgers1, Randy Russell2 and Nicholas K Voss1, (1)University of South Florida, School of Geosciences, Tampa, FL, United States, (2)University of South Florida, College of Marine Science, Tampa, FL, United States, (3)Istituto Nazionale di Geofisica e Vulcanologia, Palermo, Italy
Liam Kenefic, University of New Hampshire Main Campus, Durham, NH, United States, Emily Morton, Los Alamos National Laboratory, Santa Fe, NM, United States and Sue Bilek, New Mexico Tech, Earth and Environmental Sciences, Socorro, NM, United States
Youyi Ruan1, Donald W Forsyth2 and Samuel Wade Bell1, (1)Brown University, Providence, RI, United States, (2)Brown Univ, Providence, RI, United States
Lingxiao Jia and Subhashis Mallick, University of Wyoming, Laramie, WY, United States
Dana E Peterson, Cornell University, Ithaca, NY, United States and Katie M Keranen, Cornell University, Earth and Atmospheric Sciences, Ithaca, NY, United States
Miles Bodmer1, Douglas R Toomey2, Emilie E E Hooft2, Maximiliano Bezada3, Brandon Schmandt4 and Joseph S Byrnes5, (1)University of Oregon, Eugene, OR, United States, (2)University of Oregon, Earth Sciences, Eugene, OR, United States, (3)University of Minnesota, Earth Science, Minneapolis, MN, United States, (4)University of New Mexico Main Campus, Albuquerque, NM, United States, (5)University of Minnesota Twin Cities, Earth Sciences, Minneapolis, MN, United States
John A Collins1, Jeffrey Joseph McGuire2, Keir Becker3, Jeff K. O'Brien2, Keith von der Heydt2, Martin Heesemann4 and Earl E Davis5, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)WHOI, Woods Hole, MA, United States, (3)Univ Miami - RSMAS, Miami, FL, United States, (4)Ocean Networks Canada, Victoria, BC, Canada, (5)Geological Survey of Canada Sidney, Sidney, BC, Canada
Martin Heesemann1, Kelin Wang2, Earl Davis3, C David Chadwell4, Edwin Nissen5, Kate Moran1 and Martin Scherwath1, (1)Ocean Networks Canada, Victoria, BC, Canada, (2)Geological Survey of Canada, Sidney, BC, Canada, (3)Pacific Geoscience Center, Sidney, BC, Canada, (4)Scripps Institution of Oceanography, La Jolla, CA, United States, (5)Colorado School of Mines, Golden, CO, United States
Kayla Crosbie1, Geoffrey A Abers1, Michael Everett Mann1, Helen A Janiszewski2, Kenneth C Creager3, Eric Kiser4, Carl W Ulberg5, Roger P Denlinger6 and Seth C Moran7, (1)Cornell University, Ithaca, NY, United States, (2)Columbia University in the City of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States, (3)Applied Physics Laboratory University of Washington, Seattle, WA, United States, (4)Rice University, Earth Science Department, Houston, TX, United States, (5)University of Washington, Seattle, WA, United States, (6)USGS, Cascades Volcano Observatory, Vancouver, WA, United States, (7)USGS, Vancouver, WA, United States
Gary D Egbert1, Bo Yang2, Paul Bedrosian3, Anna Kelbert4, Kerry Key5, Dean Livelybrooks6, Blake Anthony Parris6 and Adam Schultz7, (1)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (2)China University of Geosciences Wuhan, Wuhan, China, (3)USGS, Denver, CO, United States, (4)Geologic Hazards Science Center Denver, Denver, CO, United States, (5)Institute of Geophysics and Planetary Physics La Jolla, La Jolla, CA, United States, (6)University of Oregon, Eugene, OR, United States, (7)Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, OR, United States
Harold J Tobin and Susanna I Webb, University of Wisconsin Madison, Madison, WI, United States
Jessie K Saunders and Jennifer Susan Haase, Scripps Institution of Oceanography, La Jolla, CA, United States
Jianhua Gong, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Jeffrey Joseph McGuire, WHOI, Woods Hole, MA, United States
Sampath Rathnayaka, University of Massachusetts Amherst, Amherst, MA, United States and Haiying Gao, University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States
Emily Morton, New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, NM, United States, Susan L Bilek, New Mexico Tech, Department of Earth and Environmental science, Socorro, NM, United States and Charlotte A Rowe, Los Alamos National Laboratory, Los Alamos, NM, United States
Thomas M Brocher, U.S. Geological Survey, Menlo Park, CA, United States
Haiying Gao, University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States
Erin A Wirth1,2, Arthur D Frankel3, John Emilio Vidale4, Ian Stone2, Marafi Nasser2 and William J Stephenson5, (1)University of Washington, Earth and Space Sciences, Seattle, WA, United States, (2)University of Washington, Seattle, WA, United States, (3)USGS, Seattle, WA, United States, (4)Univ Washington, Seattle, WA, United States, (5)U.S. Geological Survey, Denver, CO, United States
Erik Fredrickson1, William S D Wilcock2, Parker MacCready3, Emily C Roland4, David A Schmidt5, Mark A Zumberge6, Glenn S Sasagawa6 and Alexander L Kurapov7, (1)University of Washington Seattle Campus, Department of Oceanography, Seattle, WA, United States, (2)University of Washington, School of Oceanography, Seattle, WA, United States, (3)Univ. Washington, Olympia, WA, United States, (4)University of Washington Seattle Campus, Seattle, WA, United States, (5)University of Washington, Department of Earth and Space Sciences, Seattle, WA, United States, (6)Univ California San Diego, La Jolla, CA, United States, (7)COAS/Oregon State Univ, Corvallis, OR, United States
Ian Stone, University of Washington Seattle, Seattle, WA, United States, John Emilio Vidale, University of Southern California, Los Angeles, CA, United States, Shuoshuo Han, University of Texas, Institute for Geophysics, Austin, TX, United States and Emily C Roland, University of Washington, School of Oceanography, Seattle, WA, United States
Eileen L Evans and Sarah E Minson, U.S. Geological Survey, Menlo Park, CA, United States
Duo Li, McGill University, Montreal, QC, Canada, Jeffrey Joseph McGuire, WHOI, Woods Hole, MA, United States, Yajing Liu, McGill University, Earth and Planetary Sciences, Montreal, QC, Canada and Jeanne Hardebeck, USGS, Menlo Park, CA, United States
Jeremy Gosselin, Pascal Audet and Andrew J Schaeffer, University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada
William S D Wilcock1, Dana Manalang2, Michael Harrington2, Geoff Cram2, James Tilley2, Justin Burnett3, Derek Martin3 and Jerome M. Paros4, (1)University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States, (2)University of Washington, Applied Physics Lab, Seattle, WA, United States, (3)Applied Physics Laboratory University of Washington, Seattle, WA, United States, (4)Paroscientific, Inc. & Quartz Seismic Sensors, Inc., Redmond, WA, United States
William Bythewood Hawley, University of California, CA, United States and Richard M Allen, UC Berkeley Seismology Lab, Berkeley, CA, United States
Jian Zhu, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Juan Pablo Canales, Woods Hole Oceanographic Inst, Geology and Geophysics, Woods Hole, MA, United States, Shuoshuo Han, University of Texas Institute for Geophysics, Austin, TX, United States, Suzanne M Carbotte, LDEO, Palisades, NY, United States, Adrien F Arnulf, Institute for Geophysics, Austin, TX, United States and Mladen R Nedimovic, Dahousie University, Halifax, NS, Canada
Juan Pablo Canales, Woods Hole Oceanographic Institution, Geology & Geophysics, Woods Hole, MA, United States, Suzanne M Carbotte, LDEO, Palisades, NY, United States, Mladen R Nedimovic, Dahousie University, Halifax, NS, Canada and Helene Delphine Carton, Institut de Physique du Globe de Paris, Paris, France
Brent Evers, Incorporated Research Institutions for Seismology, Seattle, WA, United States and Kasey Aderhold, Incorporated Research Institutions for Seismology, Washington, DC, United States
C David Chadwell, University of California San Diego, La Jolla, CA, United States; Scripps Institution of Oceanography, La Jolla, CA, United States
Pascal Audet and Andrew J Schaeffer, University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada
Andrew J Schaeffer and Pascal Audet, University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada
Helen A Janiszewski, Columbia University of New York, Palisades, NY, United States, James B Gaherty, Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Geoffrey A Abers, Cornell University, Ithaca, NY, United States and Haiying Gao, University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States

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