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On Entropy and clustering in earthquake hypocentre distributions

Nicholson, T; Sambridge, Malcolm; Gudmundsson, O


The degree of clustering or disorder within earthquake distributions may be measured using the concept of entropy. A method for calculating the entropy of any 3-D point set (e.g. earthquake foci) is presented. This makes use of Voronoi cells (convex polyhedra representing nearest neighbour regions) to measure point density in three dimensions. An estimate of event density can be determined directly from the size of Voronoi cells. Normalizations are introduced to the definition of entropy that...[Show more]

CollectionsANU Research Publications
Date published: 2000
Type: Journal article
Source: Geophysical Journal International
DOI: 10.1046/j.1365-246X.2000.00113.x


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