Windowed Etas Models With Application To The Chilean Seismic Catalogs

Marcello Chiodi, Giada Adelfio, Orietta Nicolis

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6 Citazioni (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 dierent geographical areas is examined in overlapping successive windows with varying latitude. A different behaviour of background and triggered seismicity in the different windows is observed and analyzed.
Lingua originaleEnglish
pagine (da-a)-
Numero di pagine16
RivistaSpatial Statistics
Stato di pubblicazionePublished - 2015

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seismicity
Point Process
aftershock
Likelihood
Space-time
Model
Background

All Science Journal Classification (ASJC) codes

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

Cita questo

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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 dierent geographical areas is examined in overlapping successive windows with varying latitude. A different behaviour of background and triggered seismicity in the different windows is observed and analyzed.",
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AU - Chiodi, Marcello

AU - Adelfio, Giada

AU - Nicolis, Orietta

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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 dierent geographical areas is examined in overlapping successive windows with varying latitude. A different behaviour 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 dierent geographical areas is examined in overlapping successive windows with varying latitude. A different behaviour of background and triggered seismicity in the different windows is observed and analyzed.

UR - http://hdl.handle.net/10447/136610

M3 - Article

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JO - Spatial Statistics

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