T044
Segmentation and supercycles: Observations and models of earthquake recurrence patterns
Session ID#: 76621
Session Description:
Earthquake rupture segmentation and cyclicity can be complex; nevertheless, recognizable patterns in earthquake recurrence emerge from long, high resolution, spatially distributed chronologies. Researchers now seek to discover the range of possible rupture areas, the variability of recurrence intervals, and patterns of earthquake clustering in space and time. The term “supercycle” has been used to describe repeating longer periods of strain accumulation and release that each involve multiple fault ruptures. However, this term has become very broadly applied, lumping together several distinct phenomena that have different implications for seismic hazard and fault mechanics. We welcome submissions regarding observations or models of any type of earthquake cyclicity but encourage authors to describe the behavior more specifically. We likewise invite submissions regarding rupture segmentation, i.e., limits placed on earthquake rupture areas by persistent, frequent, or ephemeral barriers, including connections between barrier behavior and underlying causes such as geologic structure or fault rheology.
Index Terms:
7221 Paleoseismology [SEISMOLOGY]
8107 Continental neotectonics [TECTONOPHYSICS]
8118 Dynamics and mechanics of faulting [TECTONOPHYSICS]
8170 Subduction zone processes [TECTONOPHYSICS]
Primary Convener: Belle Philibosian, USGS Geological Survey, Menlo Park, CA, United States
Convener: Aron J Meltzner, Nanyang Technological University, Asian School of the Environment, Singapore, Singapore
Primary Liaison: Belle Philibosian, U.S. Geological Survey, Earthquake Science Center, Menlo Park, CA, United States
Megathrust Earthquake Supercycles and Seismotectonic Segmentation Along the South-Central Chile Margin (493800)
Daniel Melnick, Universidad Austral, Instituto de Ciencias de la Tierra, Valdivia, Chile, Marcos Moreno, GFZ, Lithosphere Dynamics, Potsdam, Germany, Ed Garrett, Marco Antonio Cisternas, Pontifical Catholic University of Valparaíso, Escuela se Ciencias del Mar, Valparaiso, Chile, Julius Jara-Muñoz, University of Potsdam, Institute of Geosciences, Potsdam, Germany, Valentina Maldonado, Universidad Austral de Chile, Valdivia, Chile, Joaquin Cortes-Aranda, Universidad de Concepcion, Concepcion, Chile, Andres Tassara, University of Concepcion, Concepcion, Chile, Robert L Wesson, USGS MS 966, Denver, CO, United States, Alan R Nelson, US Geological Survey, Denver, CO, United States and Millennium Nucleus CYCLO
Structural Controls on Postseismic Deformation Following the Mw 7.8 Pedernales, Ecuador Megathrust Earthquake: Insights from Joint Tomographic Inversion and Aftershock Relocation (497234)
Mariah Chambers Hoskins1, Anne Meltzer1, Josh Stachnik1, Hans Agurto-Detzel2, Alexandra Patricia Alvarado3, Susan L Beck4, Philippe Charvis2, Yvonne Font2, Stephen Hernandez5, Clinton D Koch4, Sergio Leon Rios6, Colton Lynner4, Marc M Regnier7, Andreas Rietbrock6 and Mario Calixto Ruiz5, (1)Lehigh University, Earth and Environmental Sciences, Bethlehem, PA, United States, (2)Géoazur - Université Nice Sophia Antipolis, Université Côte d'Azur, IRD, CNRS, OCA, Valbonne, France, (3)Instituto Geofísico de la Escuela Politécnica Nacional, Quito, Ecuador, (4)University of Arizona, Tucson, AZ, United States, (5)Escuela Politécnica Nacional, Instituto Geofísico, Quito, Ecuador, (6)Karlsruhe Institute of Technology, Karlsruhe, Germany, (7)Géoazur - Université Côte d'Azur - IRD - CNRS - Observatoire de la côte d'Azur, Valbonne, France
Issues in Characterization of Earthquake Sequences by Aperiodicity and Long-Term Fault Memory (506775)
Leah Salditch, Northwestern University, Earth and Planetary Sciences, Evanston, IL, United States, Seth Stein, Northwestern Univ, Department of Earth & Planetary Sciences, Evanston, IL, United States, James Neely, Northwestern University, Evanston, United States and Bruce D. Spencer, Northwestern University, Department of Statistics and Institute for Policy Research, Evanston, IL, United States
High-resolution Holocene to late Pleistocene records of paleseismology and incremental slip rates along Conway segment of Hope fault, South Island, New Zealand: Towards a dated path of earthquake slip through time (508662)
Alexandra E Hatem1,2, James Francis Dolan3, Robert Wayne Zinke3, Russ James Van Dissen4, Christopher P. McGuire5, Edward Rhodes6 and Nathan Brown7, (1)University of Southern California, Los Angeles, CA, United States, (2)United States Geological Society, Golden, CA, United States, (3)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (4)GNS Science, Lower Hutt, New Zealand, (5)University of California Los Angeles, Dept. of Earth, Planetary and Space Sciences, Los Angeles, CA, United States, (6)University of Sheffield, Department of Geography, Sheffield, S10, United Kingdom, (7)University of California, Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, CA, United States
Coseismic slip and postseismic slip in the south of the 2011 Tohoku-Oki Earthquake (513102)
Ryoko Nakata, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, Ryota Hino, Tohoku University, Graduate School of Science, Sendai, Japan and Takane Hori, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Research and Development Center for Earthquake and Tsunami, Yokohama, Japan
Evidence of Forearc Uplift, Earthquake Segmentation, and Great Earthquakes Associated with Large Subducting Features (515699)
Maruf M Mukti, Institut de Physique du Globe de Paris, Paris, France; Indonesian Institute of Sciences, Bandung, Indonesia, Satish Chandra Singh, IPG Paris, Paris Cedex 05, France and Ian Deighton, TGS, Surbiton, United Kingdom
Structural Controls on Rupture Extent of Sumatran Fault Zone Earthquakes, Indonesia (531173)
Rino Salman1, Eric Ostrom Lindsey2, Lujia Feng3, Kyle Bradley4, Shengji Wei5, Teng Wang1, Mudrik Rahmawan Daryono6 and Emma Hill7, (1)Nanyang Technological University, Singapore, Singapore, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)Earth Observatory of Singapore, Singapore, Singapore, (4)Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore, (5)Nanyang Technological University, Earth Observatory of Singapore, Singapore, Singapore, (6)Indonesian Institute of Sciences (LIPI), RC Geotechnology, Bandung, Indonesia, (7)Nanyang Technological University, Asian School of the Environment, Singapore, Singapore
Mapping active surface rupture faulting and landform deformation along the Coyote Creek Fault in the San Jacinto Fault zone of southern California, USA: understanding the paleoseismic behaviour and recurrence model (611702)
Anand K Pandey, National Geophysical Research Institute, GIS and Geology Group, Hyderabad 500007, India, Thomas K Rockwell, San Diego State University, Department of Geological Sciences, San Diego, CA, United States and Prabha Pandey, CSIR NGRI, Hyderabad, India
Geometric Controls on Megathrust Earthquakes (615538)
Steven Michael Plescia, USGS National Earthquake Information Center Golden, Golden, CO, United States; University of Colorado at Boulder, Boulder, CO, United States and Gavin P Hayes, U.S. Geological Survey, Denver, CO, United States
Investigating Fault Rupture Connectivity Between Upper-plate Faults and the Southern Cascadia Subduction Zone: A Paleoseismic Investigation of the Little Salmon Fault Zone, Hydesville, California (616771)
Tyler C Ladinsky, California Geological Survey Menlo Park, Menlo Park, CA, United States, Harvey M Kelsey, Humboldt State University, Arcata, CA, United States, Samuel Bold, Humboldt State University, Geology, Arcata, CA, United States, Melanie Michalak, Univ of California Santa Cruz, Santa Cruz, CA, United States and Robert Carleton Witter, USGS Alaska Science Center, Anchorage, AK, United States
Paleoseismic investigation of the Late Quaternary behavior of the Pajarito Fault System in the Rio Grande Rift, Los Alamos, New Mexico: Is the Pajarito fault system a single seismogenic source? (620717)
Robert Givler1, John N Baldwin1, William Lettis1, Thomas K Rockwell2, Susan Olig3, Michael Machette4, Eric McDonald5, Emily S Schultz-Fellenz6, Chris Bloszies1, Ross Hartleb7, Brian Gray1, Brandon Michael Crawford6 and Erika Swanson6, (1)Lettis Consultants International, Inc., Concord, CA, United States, (2)San Diego State University, Department of Geological Sciences, San Diego, CA, United States, (3)Olig Seismic Geology, Inc., Martinez, CA, United States, (4)Paleo Seis Surveys, LLC, Port Townsend, United States, (5)Desert Research Institute Reno, Reno, NV, United States, (6)Los Alamos National Laboratory, EES-14, Los Alamos, NM, United States, (7)Lettis Consultants International, Inc., Valencia, CA, United States
