S033:
Subduction Zone Structure and Interplate Slip along the Pacific Margin of South America





Session ID#: 23736

Session Description:
Many subduction-related parameters, such as incoming plate age, roughness, and sediment thickness, thought to control earthquake generation and slip behavior are found along the ~6500-km long Nazca/South America plate boundary, making this margin a natural laboratory for comparative studies. Furthermore, there is a rich historic record of earthquake activity extending back to ~1500 AD, with 9 earthquakes of Mw≥7.6 since 2000 that have been well recorded by modern seismological and geodetic instrumentation. This enables detailed studies of the relationship between Earth structure, seismic and aseismic slip, and earthquake nucleation, propagation and segmentation. We invite contributions from the broad range of disciplines that contribute to understanding earthquake processes along the Pacific margin of South America, including studies related to the Mw7.8 2016 Ecuador earthquake, recent controlled-source experiments along the Chilean margin, and advances in geodetic monitoring of the subduction zone.
Primary Convener:  Anne M Trehu, Oregon State University, College of Earth Ocean and Atmospheric Sciences, Corvallis, OR, United States; Oregon State Univ, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
Conveners:  Heidrun Kopp, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Diana Comte, University of Chile, FCFM-AMTC, Santiago, Chile and Hans Agurto-Detzel, Géoazur - Université Nice Sophia Antipolis, Valbonne, France
Co-Organized with:
Seismology, Geodesy, Natural Hazards, and Tectonophysics

Cross-Listed:
  • G - Geodesy
  • NH - Natural Hazards
  • T - Tectonophysics
Index Terms:

1209 Tectonic deformation [GEODESY AND GRAVITY]
4302 Geological [NATURAL HAZARDS]
7215 Earthquake source observations [SEISMOLOGY]
8123 Dynamics: seismotectonics [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Ina Storch, Freiberg University of Mining and Technology, Geophysics and Geoinformatics, Freiberg, Germany and Stefan Buske, Freiberg University of Mining and Technology, Freiberg, Germany
Christophe Vigny, CNRS, Paris Cedex 16, France, Emilie Klein, Univ Strasbourg, IPGS, Strasbourg Cedex, France, Marianne Metois, LGLTPE Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement, Villeurbanne Cedex, France, Gianina Meneses, Ecole Normale Supérieure Paris, Paris, France and Arthur Delorme, Institut de Physique du Globe de Paris, Paris, France
Marianne Metois, LGLTPE Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement, Villeurbanne Cedex, France
Carlos Peña1,2, Oliver Heidbach3, Marcos Moreno1, Shaoyang Li4, Jonathan R. Bedford5 and Onno Oncken6, (1)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (2)Free University of Berlin, Berlin, Germany, (3)GFZ German Research Centre for Geosciences, Potsdam, Germany, (4)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Section 3.1, Potsdam, Germany, (5)Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany, (6)GeoForschungsZentrum GFZ, Potsdam, Germany
Lidong Bie1, Andreas Rietbrock1 and Hans Agurto-Detzel2, (1)University of Liverpool, Liverpool, L69, United Kingdom, (2)Géoazur - Université Nice Sophia Antipolis, Université Côte d'Azur, IRD, CNRS, OCA, Valbonne, France
Marc M Regnier1,2, Monica Segovia3,4, Yvonne Font2,5, Philippe Charvis2,6, Audrey Galve1, Paul Jarrin4, Yann Hello7,8, Mario Calixto Ruiz9 and Andres Pazmino10, (1)Géoazur - Université Nice Sophia Antipolis, Université Côte d'Azur, IRD, CNRS, OCA, Valbonne, France, (2)Université Côte d’Azur, IRD, Observatoire Côte d'Azur, CNRS, Géoazur, Valbonne, France, (3)GeoAzur, Valbonne, France, (4)Instituto Geofísico, Escuela Politécnica Nacional, Quito, Ecuador, (5)IRD Institute for Research and Development, Marseille Cedex 02, France, (6)Institut de Recherche pour le Développement - IRD, Valbonne, France, (7)IRD, GeoAzur, Valbonne, France, (8)Université Côte d'Azur -IRD, Géoazur, Nice, France, (9)Escuela Politecnica Nacional, Quito, Ecuador, (10)INOCAR, GUAYAQUIL, Ecuador
Marianne Saillard1, Laurence Audin2, Baptiste Rousset2, Jean-Philippe Avouac3, Mohamed Chlieh1, Sarah R Hall4, Laurent Husson2 and Daniel Farber5, (1)Université Côte d’Azur, IRD, CNRS, Observatoire de la Côte d’Azur, Géoazur, Valbonne, France, (2)IRD, CNRS, Université Grenoble Alpes, ISTerre, Grenoble, France, (3)California Institute of Technology, Geological and Planetary Sciences, Pasadena, CA, United States, (4)College of the Atlantic, Bar Harbor, ME, United States, (5)Lawrence Livermore National Laboratory, Livermore, CA, United States
Nadaya Cubas, Sorbonne Universités, UPMC Université Paris 06, CNRS, ISTeP, Paris, France
Baptiste Gombert1, Zacharie Duputel1, Romain Jolivet2, Luis A Rivera1, Mark Simons3, Junle Jiang4, Cunren Liang5 and Eric Jameson Fielding5, (1)Institut de Physique du Globe de Strasbourg, UMR 7516, Université de Strasbourg/EOST, CNRS, Strasbourg, France, (2)Ecole Normale Supérieure Paris, PSL Research University, Paris, France, (3)Seismological Laboratory, California Institute of Technology, Pasadena, CA, United States, (4)Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States, (5)Jet Propulsion Lab Caltech, Pasadena, CA, United States
Lillian Soto-Cordero1, Jennifer Leigh Nealy2, Anne Meltzer1, Hans Agurto-Detzel3, Alexandra Patricia Alvarado4, Susan L Beck5, Harley Benz2, Eric A Bergman6, Philippe Charvis3, Yvonne Font3, Gavin P Hayes2, Stephen Hernandez4, Mariah Hoskins1, Sergio Leon Rios7, Colton Lynner5, Marc M Regnier3, Andreas Rietbrock8, Josh C Stachnik1 and William L Yeck2, (1)Lehigh University, Earth and Environmental Sciences, Bethlehem, PA, United States, (2)USGS National Earthquake Information Center Golden, Golden, CO, United States, (3)Géoazur - Université Nice Sophia Antipolis, Université Côte d'Azur, IRD, CNRS, OCA, Valbonne, France, (4)Instituto Geofísico de la Escuela Politécnica Nacional, Quito, Ecuador, (5)University of Arizona, Tucson, AZ, United States, (6)Global Seismological Services, Golden, CO, United States, (7)University of Liverpool, Liverpool, United Kingdom, (8)University of Liverpool, Liverpool, L69, United Kingdom
Anne M Trehu, Oregon State University, College of Earth Ocean and Atmospheric Sciences, Corvallis, OR, United States and PICTURES Science Team
Emma K Myers, University of Washington, Earth & Space Sciences, Seattle, WA, United States, Anne M Trehu, Oregon State Univ, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Kathy K Davenport, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Emily C Roland, University of Washington, School of Oceanography, Seattle, WA, United States and PICTURES Science Team
Yunyi Qian, University of Science and Technology of China, School of Earth and Space Sciences, Hefei, China, Shengji Wei, Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore, Wenbo Wu, Princeton University, Princeton, NJ, United States and Sidao Ni, Institute of Geodesy and Geophysics, Wuhan,Hubei, China
Frederique Rolandone1, Jean Mathieu Nocquet2, Patricia A Mothes3, Paul Jarrin3, Martin Vallee4, Nadaya Cubas5, Stephen Hernandez3, Morgan Plain3, Sandro Vaca3 and Yvonne Font2, (1)Sorbonne Universités, UPMC Université Paris 06, CNRS, Paris, France, (2)Université Côte d’Azur, IRD, Observatoire Côte d'Azur, CNRS, Géoazur, Valbonne, France, (3)Instituto Geofísico, Escuela Politécnica Nacional, Quito, Ecuador, (4)Institut de Physique du Globe de Paris, Paris, France, (5)Sorbonne Universités, UPMC Université Paris 06, CNRS, ISTeP, Paris, France
Hans Agurto-Detzel1, Yvonne Font1, Philippe Charvis1, David Ambrois1, Jerome Cheze1, Francoise Courboulex1, Louis De Barros1, Anne Deschamps1, Audrey Galve1, Maxime Godano1, Laigle Mireille1, Christophe Maron1, Xavier Martin1, Tony Monfret1, Davide Oregioni1, Fabrice Peix Sr1, Marc M Regnier1, Ben Yates1, Diego Mercerat2, Sergio Leon Rios3, Andreas Rietbrock4, Wilson Acero5, Alexandra Patricia Alvarado5, Ponce Gabriela5, Cristina Ramos5, Mario Calixto Ruiz5, Juan Carlos Singaucho5, Freddy Vasconez5, Cristian Viracucha5, Susan L Beck6, Colton Lynner6, Mariah Hoskins7, Anne Meltzer7, Lillian Soto-Cordero7 and Josh Stachnik7, (1)Géoazur - Université Nice Sophia Antipolis, Université Côte d'Azur, IRD, CNRS, OCA, Valbonne, France, (2)CEREMA, Laboratoire de Nice, Nice, France, (3)University of Liverpool, Liverpool, United Kingdom, (4)University of Liverpool, Liverpool, L69, United Kingdom, (5)Instituto Geofísico de la Escuela Politécnica Nacional, Quito, Ecuador, (6)University of Arizona, Tucson, AZ, United States, (7)Lehigh University, Earth and Environmental Sciences, Bethlehem, PA, United States
Emilie Klein, Scripps Institution of Oceanography, Institute Institute of Geophysics and Planetary Physics, La Jolla, CA, United States, Christophe Vigny, ENS/CNRS, Paris, France, Dimitri Zigone, Institut de Physique du Globe Strasbourg, Strasbourg Cedex, France, Zacharie Duputel, Institut de Physique du Globe de Strasbourg, University of Strasbourg and CNRS, Strasbourg, France, Cecile Doubre, EOST École et Observatoire des Sciences de la Terre, Strasbourg, France and Gianina Meneses, Ecole Normale Supérieure Paris, Paris, France
Yvonne Font1, Hans Agurto-Detzel1, Alexandra Patricia Alvarado2, Marc M Regnier1, Frederique Rolandone3, Philippe Charvis1, Patricia A Mothes4, Jean Mathieu Nocquet5, Paul Jarrin6, David Ambrois1, Christophe Maron1, Anne Deschamps1, Jerome Cheze1, Fabrice Peix Sr1, Mario Calixto Ruiz7, Ponce Gabriela8, Wilson Acero8, Juan Carlos Singaucho9, Cristian Viracucha2, Freddy Vasconez2, Louis De Barros1, Diego Mercerat10, Francoise Courboulex11, Audrey Galve12, Maxime Godano1, Tony Monfret1, Cristina Ramos2, Xavier Martin1, Andreas Rietbrock13, Susan L Beck14 and Anne Metlzer15, (1)Géoazur - Université Nice Sophia Antipolis, Université Côte d'Azur, IRD, CNRS, OCA, Valbonne, France, (2)Instituto Geofísico de la Escuela Politécnica Nacional, Quito, Ecuador, (3)ISTeP Institut des Sciences de la Terre de Paris, Paris Cedex 05, France, (4)Instituto Geofisico, Quito, Ecuador, (5)Institut de Recherche pour le Développement - IRD, Valbonne, France, (6)Instituto Geofísico, Escuela Politécnica Nacional, Quito, Ecuador, (7)Escuela Politecnica Nacional, Quito, Ecuador, (8)Instituto Geofisico EPN - Ecuador, Quito, Ecuador, (9)Sioux Falls, SD, United States, (10)CEREMA, Laboratoire de Nice, Nice, France, (11)GeoAzur, Valbonne, France, (12)Université Côte d'Azur, OCA, CNRS, UPMC, IRD, Géoazur, Valbonne, France, (13)University of Liverpool, Liverpool, L69, United Kingdom, (14)University of Arizona, Tucson, AZ, United States, (15)Lehigh University, Bethlehem, United States
Kelly Olsen, University of Texas at Austin, Austin, TX, United States, Nathan L Bangs, Univ Texas, Austin, TX, United States, Adrien F Arnulf, Institute for Geophysics, Austin, TX, United States, Anne M Trehu, Oregon State Univ, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Eduardo Contreras Reyes, Universidad de Chile, Santiago, Chile and The CEVICHE Science Party
Robert Woodward1, Andrew Frassetto1 and Anne Meltzer2, (1)Incorporated Research Institutions for Seismology, Washington, DC, United States, (2)Lehigh University, Earth and Environmental Sciences, Bethlehem, PA, United States
Mahesh Narayan Shrivastava1,2, Gabriel Gonzalez1,2, Pablo Salazar1, Marcos Moreno3 and Juan Carlos Baez4, (1)Universidad Católica del Norte, Antofagasta, Chile, (2)National Research Center for Integrated Natural Disaster Management (RCINDIM/CIGIDEN), Santiago de Chile, Chile, (3)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (4)Universidad de Chile, Centro Simológical Nacional, Santiago, Chile
Kathy K Davenport, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Anne M Trehu, Oregon State Univ, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States and PICTURES Science Party
Marcos Moreno1, Shaoyang Li1, Daniel Melnick2, Jonathan R. Bedford1, Juan CARLOS Baez Sr3, Mahdi Motagh1, Sabrina Metzger1, Sanaz Vajedian1, Christian Sippl1, Eduardo Contreras-Reyes3, Benjamin D. Gutknecht4 and Onno Oncken1, (1)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, (2)Universidad Austral de Chile, Valdivia, Chile, (3)University of Chile, Santiago, Chile, (4)Dresden University of Technology, Dresden, Germany
Marta Bejar, Instituto Geologico y Minero Espana, Madrid, Spain, Jose Antonio Alvarez Gomez, Facultad de Geología, Universidad Complutense de Madrid, Geodinámica, Madrid, Spain, Alejandra Staller, Universidad Politécnica de Madrid, Madrid, Spain, Marco P Luna, Universidad Politécnica de Madrid, Ingeniería Topográfica y Cartografía, Madrid, Spain, Raul Perez Lopez, Instituto Geológico y Minero de España, Madrid, Spain, Oriol Monserrat, Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Division of Geomatics, Remote Sensing Department, Castelldefels, Spain, Kervin Chunga, Facultad de Ciencias de la Ingeniería. Universidad Estatal, Ingeniería Civil, Península Santa Elena, Ecuador, Gerardo Herrera, Instituto Geologico Minero Espana, MADRID, CDX, Spain, Luis Jordá, Instituto Geologico Minero Espana, Madrid, Spain, Aracely Lima, Instituto Nacional de Investigación Geológico Minero Metalúrgico, Quito, Ecuador and Jose J. Martínez-Díaz, Universidad Complutense de Madrid, Madrid, Spain
Sergio Leon-Rios1, Ana luiza Aguiar2, Lidong Bie1, Benjamin Edwards3, Amaya Josefina Fuenzalida Velasco2, James Holt2, Thomas Garth2, Pablo J González4, Andreas Rietbrock1, Hans Agurto-Detzel5, Philippe Charvis6, Yvonne Font5, Jean Mathieu Nocquet7, Marc M Regnier5, Alexandra Renouard8, Diego Mercerat9, Michel Pernoud10, Susan L Beck11, Anne Meltzer12, Lillian Soto-Cordero12, Alexandra Patricia Alvarado13, Matthieu Perrault13, Mario Calixto Ruiz14 and Javier Santo13, (1)University of Liverpool, Liverpool, L69, United Kingdom, (2)University of Liverpool, Liverpool, United Kingdom, (3)Alstead, NH, United States, (4)Atlanta, GA, United States, (5)Géoazur - Université Nice Sophia Antipolis, Université Côte d'Azur, IRD, CNRS, OCA, Valbonne, France, (6)GeoAzur, Valbonne, France, (7)Institut de Recherche pour le Développement - IRD, Valbonne, France, (8)Géoazur - Université Nice Sophia Antipolis, Valbonne, France, (9)CEREMA, Laboratoire de Nice, Nice, France, (10)Stockholm, Sweden, (11)University of Arizona, Tucson, AZ, United States, (12)Lehigh University, Earth and Environmental Sciences, Bethlehem, PA, United States, (13)Instituto Geofísico de la Escuela Politécnica Nacional, Quito, Ecuador, (14)Escuela Politecnica Nacional, Quito, Ecuador
Audrey Galve1, Philippe Charvis2, Marc M Regnier2, Yvonne Font2, Jean Mathieu Nocquet2 and Monica Segovia3, (1)Université Côte d’Azur, CNRS, Observatoire Côte d'Azur, IRD, Géoazur, Sophia Antipolis, Valbonne, France, (2)Université Côte d’Azur, IRD, Observatoire Côte d'Azur, CNRS, Géoazur, Valbonne, France, (3)Instituto Geofísico, Escuela Politécnica Nacional, Quito, Ecuador
Masahiro Yoshimoto, Nagoya University, Furo-Cho,Chikusa-Ku,, Japan, Hiroyuki Kumagai, Nagoya University, Nagoya, Japan, Takeshi Sagiya, Nagoya Univ, Nagoya, Japan, Hector Mora-Paez, INGEOMINAS, Bogota, Colombia and Nelson E Pulido Hernandez, NIED National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Japan
Amaya Fuenzalida, Organization Not Listed, Washington, DC, United States, Andreas Rietbrock, University of Liverpool, Liverpool, L69, United Kingdom, Jack Woollam, University of Liverpool, Liverpool, United Kingdom, Hernando Tavera, Instituto Geofísico del Perú, Lima, Peru and Sergio Ruiz, Universidad de Chile, Departamento de Geofísica, Facultad de Ciencias Físicas y Matemáticas, Santiago, Chile
Nathan L Bangs, University of Texas at Austin, Austin, TX, United States, Adrien F Arnulf, Institute for Geophysics, Austin, TX, United States, Anne M Trehu, Oregon State Univ, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Eduardo Contreras-Reyes, University of Chile, Santiago, Chile and CEVICHE Science Party
Florent Aden-Antoniow, Claudio Satriano, Pascal Bernard, Natalia Poiata, El-Madani Aissaoui and Jean-Pierre Vilotte, Institut de Physique du Globe de Paris, Paris, France

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