Windowed ETAS models with application to the Chilean seismic catalogs

Orietta Nicolis; Marcello Chiodi; Giada Adelfio

doi:10.1016/j.spasta.2015.05.006

Windowed ETAS models with application to the Chilean seismic catalogs

Orietta Nicolis, Marcello Chiodi, Giada Adelfio

Engineering School

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

The seismicity in Chile is estimated using an ETAS (Epidemic Type Aftershock sequences) space-time point process through a semi-parametric technique to account for the estimation of parametric and nonparametric components simultaneously. The two components account for triggered and background seismicity respectively, and are estimated by alternating a ML estimation for the parametric part and a forward predictive likelihood technique for the nonparametric one. Given the geographic and seismological characteristics of Chile, the sensitivity of the technique with respect to different geographical areas is examined in overlapping successive windows with varying latitude. A different behavior of background and triggered seismicity in the different windows is observed and analyzed.

Original language	English
Pages (from-to)	151-165
Number of pages	15
Journal	Spatial Statistics
Volume	14
DOIs	https://doi.org/10.1016/j.spasta.2015.05.006
Publication status	Published - 1 Nov 2015

Keywords

ETAS model
EtasFLP
R package
Space-time point processes

ASJC Scopus subject areas

Statistics and Probability
Computers in Earth Sciences
Management, Monitoring, Policy and Law

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10.1016/j.spasta.2015.05.006

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title = "Windowed ETAS models with application to the Chilean seismic catalogs",

abstract = "The seismicity in Chile is estimated using an ETAS (Epidemic Type Aftershock sequences) space-time point process through a semi-parametric technique to account for the estimation of parametric and nonparametric components simultaneously. The two components account for triggered and background seismicity respectively, and are estimated by alternating a ML estimation for the parametric part and a forward predictive likelihood technique for the nonparametric one. Given the geographic and seismological characteristics of Chile, the sensitivity of the technique with respect to different geographical areas is examined in overlapping successive windows with varying latitude. A different behavior of background and triggered seismicity in the different windows is observed and analyzed.",

keywords = "ETAS model, EtasFLP, R package, Space-time point processes",

author = "Orietta Nicolis and Marcello Chiodi and Giada Adelfio",

note = "Funding Information: The present work has been partially supported by Fondecyt grant 1131147 from the Chilean government and research funds of the University of Palermo 2012-ATE-0332 .",

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doi = "10.1016/j.spasta.2015.05.006",

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journal = "Spatial Statistics",

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T1 - Windowed ETAS models with application to the Chilean seismic catalogs

AU - Nicolis, Orietta

AU - Chiodi, Marcello

AU - Adelfio, Giada

N1 - Funding Information: The present work has been partially supported by Fondecyt grant 1131147 from the Chilean government and research funds of the University of Palermo 2012-ATE-0332 .

PY - 2015/11/1

Y1 - 2015/11/1

N2 - The seismicity in Chile is estimated using an ETAS (Epidemic Type Aftershock sequences) space-time point process through a semi-parametric technique to account for the estimation of parametric and nonparametric components simultaneously. The two components account for triggered and background seismicity respectively, and are estimated by alternating a ML estimation for the parametric part and a forward predictive likelihood technique for the nonparametric one. Given the geographic and seismological characteristics of Chile, the sensitivity of the technique with respect to different geographical areas is examined in overlapping successive windows with varying latitude. A different behavior of background and triggered seismicity in the different windows is observed and analyzed.

AB - The seismicity in Chile is estimated using an ETAS (Epidemic Type Aftershock sequences) space-time point process through a semi-parametric technique to account for the estimation of parametric and nonparametric components simultaneously. The two components account for triggered and background seismicity respectively, and are estimated by alternating a ML estimation for the parametric part and a forward predictive likelihood technique for the nonparametric one. Given the geographic and seismological characteristics of Chile, the sensitivity of the technique with respect to different geographical areas is examined in overlapping successive windows with varying latitude. A different behavior of background and triggered seismicity in the different windows is observed and analyzed.

KW - ETAS model

KW - EtasFLP

KW - R package

KW - Space-time point processes

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U2 - 10.1016/j.spasta.2015.05.006

DO - 10.1016/j.spasta.2015.05.006

M3 - Article

AN - SCOPUS:84930808987

SN - 2211-6753

VL - 14

SP - 151

EP - 165

JO - Spatial Statistics

JF - Spatial Statistics

ER -

Windowed ETAS models with application to the Chilean seismic catalogs

Abstract

Keywords

ASJC Scopus subject areas

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