On Entropy and clustering in earthquake hypocentre distributions

• Published in: Geophysical Journal International
• Main Authors: Nicholson, T, Sambridge, Malcolm, Gudmundsson, O
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Blackwell Publishing Ltd
• Subjects: Keywords: cluster analysis; earthquake hypocenter; entropy; seismicity Earthquake location; Seismicity; Hengill; Iceland
• Online Access: http://hdl.handle.net/1885/89576; https://doi.org/10.1046/j.1365-246X.2000.00113.x

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)...