Bivariate deconvolution with SIMEX: an application to mapping Alaska earthquake density

Julie McIntyre and Ronald P. Barry

Journal of Applied Statistics, 2012, vol. 39, issue 2, 297-308

Abstract: Constructing spatial density maps of seismic events, such as earthquake hypocentres, is complicated by the fact that events are not located precisely. In this paper, we present a method for estimating density maps from event locations that are measured with error. The estimator is based on the simulation--extrapolation method of estimation and is appropriate for location errors that are either homoscedastic or heteroscedastic. A simulation study shows that the estimator outperforms the standard estimator of density that ignores location errors in the data, even when location errors are spatially dependent. We apply our method to construct an estimated density map of earthquake hypocenters using data from the Alaska earthquake catalogue.

Date: 2012
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DOI: 10.1080/02664763.2011.586683

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