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Featured researches published by Matthew Miller.


Pure and Applied Geophysics | 2016

Comparison Between Tsunami Signals Generated by Different Source Models and the Observed Data of the Illapel 2015 Earthquake

Ignacia Calisto; Matthew Miller; Iván Constanzo

A major interplate earthquake occurred on September 16th, 2015, near Illapel, central Chile. This event generated a tsunami of moderate height, however, one which caused significant near field damage. In this study, we model the tsunami produced by some rapid and preliminary fault models with the potential to be calculated within tens of minutes of the event origin time. We simulate tsunami signals from two different heterogeneous slip models, a homogeneous source based on parameters from the global CMT Project, and furthermore we used plate coupling data from GPS observations to construct a heterogeneous fault based on a priori knowledge of the subduction zone. We compare the simulated signals with the observed tsunami at tide gauges located along the Chilean coast and at offshore DART buoys. For this event, concerning rapid response, the homogeneous source and coupling model represent the tsunami at least as well as the heterogeneous sources. We suggest that the initial heterogeneous fault models could be better constrained with continuous GPS measurements in the rupture area, and additionally DART records directly in front of the rupture area, to improve the tsunami simulation based on quickly calculated models for near coastal areas. Additionally, in terms of tsunami modeling, the source estimated from prior plate coupling information in this case is representative of the event that later occurs; placing further importance on the need to monitor subduction zones with GPS.


Natural Hazards | 2015

Observed and modeled tsunami signals compared by using different rupture models of the April 1, 2014, Iquique earthquake

Ignacia Calisto; Marisella Ortega; Matthew Miller

A major interplate earthquake occurred on April 1, 2014, in northern Chile with magnitude


Journal of Geophysical Research | 2012

Structure and seismogenic properties of the Mentawai segment of the Sumatra subduction zone revealed by local earthquake traveltime tomography

Rachel Collings; Dietrich Lange; Andreas Rietbrock; Frederik Tilmann; Danny Hilman Natawidjaja; Bambang W. Suwargadi; Matthew Miller; J. Saul


Geophysical Research Letters | 2012

Seismic‐afterslip characterization of the 2010 MW 8.8 Maule, Chile, earthquake based on moment tensor inversion

H. Agurto; Andreas Rietbrock; Isabelle Ryder; Matthew Miller

{M}_w = 8.1


Earth and Planetary Science Letters | 2014

Anatomy of a megathrust: The 2010 M8.8 Maule, Chile earthquake rupture zone imaged using seismic tomography

Stephen P. Hicks; Andreas Rietbrock; Isabelle Ryder; Chao-Shing Lee; Matthew Miller


Journal of South American Earth Sciences | 2014

Seismicity distribution in the vicinity of the Chile Triple Junction, Aysén Region, southern Chile

Hans Agurto-Detzel; Andreas Rietbrock; K. Bataille; Matthew Miller; Hikaru Iwamori; Keith Priestley

Mw=8.1, which ruptured part of the 1877 seismic gap segment. Following the earthquake, a tsunami was observed having a moderate impact in the nearest coastal areas. Here we propagate a tsunami generated by two different slip model distributions, as well as a homogeneous one, and compare them using observed tide gauge data from four stations along the Chilean coast, in order to estimate which best represents the measured tsunami waveforms. The heterogeneous models reproduce the general shape and amplitude of the observed data, while the tsunami signal modeled by the homogeneous slip overestimates the amplitude and underestimates the arrival time. This study shows that it is possible to accurately model near-field tsunami observations in Chile, using high-resolution bathymetry, and that they are better represented by heterogeneous sources.


Archive | 2005

Seismic imaging of a subducted ridge, southern Chile

Matthew Miller; K. Bataille; Keith Priestley; Hikaru Iwamori; I. Calisto


Journal of Geophysical Research | 2012

Structure and seismogenic properties of the Mentawai segment of the Sumatra subduction zone revealed by local earthquake traveltime tomography: MENTAWAI SEGMENT TOMOGRAPHY

Rachel Collings; Dietrich Lange; Andreas Rietbrock; Frederik Tilmann; Danny Hilman Natawidjaja; Bambang W. Suwargadi; Matthew Miller; J. Saul


Archive | 2010

P-wave tomography of the Chile Triple Junction region

Matthew Miller; Keith Priestley; Frederik Tilmann; Hikaru Iwamori; K. Bataille


Archive | 2010

Aftershock Seismicity of the Mw 8.8 Maule Earthquake of 27 February 2010 Using a 2D Velocity Model

Andreas Rietbrock; Isabelle Ryder; Christian Haberland; Stuart E. J. Nippress; H. Agurto; Sergio Barrientos; K. Bataille; Susan L. Beck; Pascal Bernard; Jaime Campos; D. Comte; Benjamin Heit; Dietrich Lange; Matthew Miller; Sophie Peyrat; Steven W. Roecker; Bernd Schurr; Frederik Tilmann; J.-P. Vilotte

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H. Agurto

University of Liverpool

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Hikaru Iwamori

Japan Agency for Marine-Earth Science and Technology

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Bambang W. Suwargadi

Indonesian Institute of Sciences

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