T11A:
Active Tectonics and Magmatism of Alaska, the Aleutians, and Northwest Canada Posters

Monday, 15 December 2014: 8:00 AM-12:20 PM
Chairs:  Sean P S Gulick, University of Texas, Institute for Geophysics, Austin, TX, United States, Robert J Stern, Univ Texas Dallas, Richardson, TX, United States and Jeffrey Todd Freymueller, University of Alaska Fairbanks, Fairbanks, AK, United States
Primary Conveners:  Sean P S Gulick, University of Texas at Austin, Austin, TX, United States
Co-conveners:  Robert J Stern, Univ Texas Dallas, Richardson, TX, United States, John M Jaeger, Univ Florida, Gainesville, FL, United States and Jeffrey Todd Freymueller, University of Alaska Fairbanks, Fairbanks, AK, United States
OSPA Liaisons:  John M Jaeger, University of Florida, Ft Walton Beach, FL, United States

Abstracts Submitted to this Session:

4524
 
Crustal And Lithospheric Thickness Variation Across Alaska In Advance Of Earthscope Transportable Array
Leland O'Driscoll and Meghan Samantha Miller, University of Southern California, Los Angeles, CA, United States
4525
 
EarthScope’s Plate Boundary Observatory in Alaska: Building on Existing Infrastructure to Provide a Platform for Integrated Research and Hazard-monitoring Efforts
Eleanor S Boyce1, Ryan M Bierma1, Heidi Willoughby1, Karl Feaux2, Glen S Mattioli2,3, Max Enders4 and Robert W Busby5, (1)UNAVCO, Inc. Anchorage, Anchorage, AK, United States, (2)UNAVCO, Inc. Boulder, Boulder, CO, United States, (3)University of Texas at Arlington, Arlington, TX, United States, (4)IRIS, Anchorage, AK, United States, (5)IRIS, Washington, DC, United States
4526
 
Earthquake Hazard and Risk in Alaska
Natanya Black Porto and Marleen Nyst, Risk Management Solutions, Inc., Newark, CA, United States
4527
 
Seismic Velocity and Thickness of Sediments Beneath the Aleutian Basin, Bering Sea
Daniel S Scheirer1, Ginger A Barth2, Ray W Sliter3, Patrick E Hart3 and Jonathan R Childs2, (1)USGS, GMEG Science Center, Baltimore, MD, United States, (2)USGS, PCM Science Center, Menlo Park, CA, United States, (3)Pacific Coastal and Marine Science Center Santa Cruz, Santa Cruz, CA, United States
4528
 
In Situ Stress Variations Associated with Regional Changes in Tectonic Setting, northeastern Brooks Range and eastern North Slope of Alaska
Catherine L Hanks, Nilesh C Dixit and Wesley K Wallace, University of Alaska Fairbanks, Department of Geosciences and Geophysical Institute, Fairbanks, AK, United States
4529
 
Tectono-thermal History of the Southern Nenana Basin, Interior Alaska: Implications for Conventional and Unconventional Hydrocarbon Exploration
Nilesh C Dixit, University of Alaska Fairbanks, Department of Geosciences and Geophysical Institute, Fairbanks, AK, United States and Catherine L Hanks, University of Alaska Fairbanks, Department of Geosciences - Geology, Geophysics and Geography, Fairbanks, AK, United States
4530
 
Evolution of the Aleutian arc
Brian R Jicha1, Suzanne Mahlburg Kay2, Allen J Schaen1, Ashley K Tibbetts2 and Bradley S Singer1, (1)University of Wisconsin Madison, Madison, WI, United States, (2)Cornell University, Ithaca, NY, United States
4531
 
Roles of magmatic oxygen fugacity and water content in generating signatures of continental crust in the Alaska-Aleutian arc
Katherine A Kelley1, Elizabeth Cottrell2, Maryjo N Brounce1,2 and Zoe Gentes1, (1)University of Rhode Island Narragansett Bay, Narragansett, RI, United States, (2)Smithsonian, NMNH, Washington, DC, United States
4532
 
Geochemistry and Age of Magmatic Rocks on Rat Island in the Aleutian Forearc at the Junction of the Aleutian Arc with the Bowers Ridge
Ashley K Tibbetts1, Suzanne Mahlburg Kay1, Brian R Jicha2 and William M White3, (1)Cornell University, Ithaca, NY, United States, (2)University of Wisconsin Madison, Madison, WI, United States, (3)Cornell Univ, Ithaca, NY, United States
4533
 
Petrogenesis of Mafic and Ultramafic Enclaves from the Central Aleutian Arc, and Implications for the Formation of New Crust
Elisabeth S Nadin1, Adrienne E Kentner1, Christopher J Nye2 and Pavel E Izbekov3, (1)University of Alaska Fairbanks, Fairbanks, AK, United States, (2)Alaska Division of Geological and Geophysical Surveys, Fairbanks, AK, United States, (3)Alaska Volcano Observatory Fairbanks, Fairbanks, AK, United States
4534
 
The Rupture Process of the 2014 Rat Island Intermediate-Depth Earthquake with Relation to the Geodynamical Context of the Western Aleutian Arc
Twardzik Cedric, Chen Ji and Ralph J Archuleta, University of California Santa Barbara, Santa Barbara, CA, United States
4535
 
Downdip and along-strike variations in the properties of the Alaska megathrust from active-source seismic imaging
Donna J Shillington1, Anne Becel1, Mladen R Nedimovic2, Jiyao Li1, Harold Kuehn2, Spahr C Webb3, Geoffrey A Abers4, Katie M Keranen4 and Demian M Saffer5, (1)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (2)Dalhousie University, Halifax, NS, Canada, (3)Lamont Doherty Earth Observ, Palisades, NY, United States, (4)Cornell University, Ithaca, NY, United States, (5)Pennsylvania State University, University Park, PA, United States
4536
 
Seismic imaging constraints on megathrust fault zone properties
Geoffrey A Abers1, Helen A Janiszewski2, Katie M Keranen1, Demian M Saffer3 and Donna J Shillington4, (1)Cornell University, Ithaca, NY, United States, (2)Columbia University of New York, Palisades, NY, United States, (3)Pennsylvania State University, University Park, PA, United States, (4)Lamont -Doherty Earth Observatory, Palisades, NY, United States
4537
 
Shallow velocity structure of the Alaska Peninsula subduction zone and implications for controls on seismic behavior
Jiyao Li1, Donna J Shillington2, Anne Becel2, Mladen R Nedimovic3, Harold Kuehn3, Spahr C Webb4, Geoffrey A Abers5, Katie M Keranen5 and Demian M Saffer6, (1)Columbia University of New York, Palisades, NY, United States, (2)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (3)Dalhousie University, Halifax, NS, Canada, (4)Lamont Doherty Earth Observ, Palisades, NY, United States, (5)Cornell University, Ithaca, NY, United States, (6)Pennsylvania State University, University Park, PA, United States
4538
 
Diverse Approaches USED to Characterize the Earthquake and Tsunami Hazards Along the Southern Alaska Continental Margin
Peter J Haeussler1, Robert Carleton Witter1, Lee M Liberty2, Daniel S Brothers3, Richard W Briggs4, Phillip A Armstrong5, Jeffrey Todd Freymueller6, Tom Parsons7, Holly F Ryan8, Homa J Lee8 and Emily C Roland1, (1)USGS Alaska Science Center, Anchorage, AK, United States, (2)Boise State Univ, Boise, ID, United States, (3)Pacific Coastal and Marine Science Center Santa Cruz, Santa Cruz, CA, United States, (4)US Geological Survey, Denver, CO, United States, (5)California St Univ Fullerton, Fullerton, CA, United States, (6)University of Alaska Fairbanks, Fairbanks, AK, United States, (7)USGS California Water Science Center Menlo Park, Menlo Park, CA, United States, (8)USGS, Menlo Park, CA, United States
4539
 
Tidal Triggering of Earthquakes in the Alaska-Aleutian Subduction Zone
Yen Joe Tan and Maya Tolstoy, LDEO-Columbia Univ, Palisades, NY, United States
4540
 
Deciphering the Transitional Tectonics of the Southern Alaska Margin Through Gulf Sedimentology and Geophysics: IODP Expedition 341
Robert Reece, Texas A&M University, College Station, TX, United States, Sean P S Gulick, University of Texas at Austin, Institute for Geophysics, Austin, TX, United States and John M Jaeger, University of Florida, Ft Walton Beach, FL, United States
4541
 
Physical properties of southern Alaska margin sediments in the context of global convergent margins
Hugh Daigle, University of Texas, Austin, TX, United States, Olivia Piña, The Ohio State University, Department of Civil, Environmental and Geodetic Engineering, Columbus, OH, United States, Elizabeth Screaton, Univ Florida, Gainesville, FL, United States and Stephanie James, University of Florida, Ft Walton Beach, FL, United States
4542
 
The Current Tectonics of the Yukon and Adjacent Area
Roy D Hyndman, Geological Survey of Canada Sidney, Sidney, BC, Canada and Lucinda J Leonard, University of Victoria, Victoria, BC, Canada
4543
 
Present-Day Strain Transfer Across the Yakutat Collision in SW Yukon – SE Alaska: The Death of the Southern Denali Fault?
Anaïs Marechal1, Stephane Mazzotti1, Jean-Francois Ritz1, Matthieu A Ferry1 and Jeffrey Todd Freymueller2, (1)Universite Montpellier 2, Montpellier Cedex 05, France, (2)University of Alaska Fairbanks, Fairbanks, AK, United States
4544
 
Updated mapping and seismic reflection data processing along the Queen Charlotte fault system, southeast Alaska
Maureen A L Walton1, Sean P S Gulick1, Peter J Haeussler2, Kristin Rohr3, Emily C Roland4 and Anne M Trehu5, (1)University of Texas at Austin, Institute for Geophysics, Austin, TX, United States, (2)USGS Alaska Science Center, Anchorage, AK, United States, (3)Kristin Rohr Consulting, Victoria, BC, Canada, (4)University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States, (5)Oregon State University, Corvallis, OR, United States
4545
 
Aftershock source properties of events following the 2013 Craig Earthquake: new evidence for structural heterogeneity on the northern Queen Charlotte Fault
Emily C Roland1, Maureen A L Walton2, Natalia A Ruppert3, Sean P S Gulick2, Gail Lynn Christeson2 and Peter J Haeussler4, (1)University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States, (2)University of Texas at Austin, Institute for Geophysics, Austin, TX, United States, (3)University of Alaska Fairbanks, Fairbanks, AK, United States, (4)USGS Alaska Science Center, Anchorage, AK, United States
 
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