relation: https://episodesplatform.eu/eprints/212/
title: Scale-free networks of earthquakes and aftershocks
creator: Baiesi, Marco
creator: Paczuski, Maya
subject: Clustering and migration
description: We propose a metric to quantify correlations between earthquakes. The metric consists of a product involving the time interval and spatial distance between two events, as well as the magnitude of the first one.  According to this metric, events typically are strongly correlated to only one or a few preceding ones. Thus a  classification of events as foreshocks, main shocks, or aftershocks emerges automatically without imposing  predetermined space-time windows. In the simplest network construction, each earthquake receives an incoming link from its most correlated predecessor. The number of aftershocks for any event, identified by its  outgoing links, is found to be scale free with exponent  γ=2.0(1). The original Omori law with p=1 emerges  as a robust feature of seismicity, holding up to years even for aftershock sequences initiated by intermediate  magnitude events. The broad distribution of distances between earthquakes and their linked aftershocks sug-  gests that aftershock collection with fixed space windows is not appropriate.
publisher: The American Physical Society
date: 2004
type: Article
type: PeerReviewed
identifier:   Baiesi, Marco and Paczuski, Maya  (2004) Scale-free networks of earthquakes and aftershocks.  Physical Review E, 69 (6).  DOI: https://doi.org/10.1103/PhysRevE.69.066106 <https://doi.org/10.1103/PhysRevE.69.066106>     
relation: http://dx.doi.org/10.1103/PhysRevE.69.066106
relation: doi:10.1103/PhysRevE.69.066106