The Aegean Sea (Greece) earthquake sequence of 25 March 1986: An application of the ν-value method for earthquake prediction |
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| Authors: | D Papanastassiou J Latoussakis G Stavrakakis J Drakopoulos |
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| Institution: | 1. National Observatory of Athens, Seismological Institute, PO Box 20048, 118 10, Athens, Greece
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| Abstract: | A technique based on the ν-value, which is defined by % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9% vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x% fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaaSGbaeaaca% GGOaGafqiXdqNbaebacaGGPaWaaWbaaSqabeaacaaIYaaaaaGcbaWa% a0aaaeaacqaHepaDdaahaaWcbeqaaiaaikdaaaaaaaaaaaa!3CEB!\{{(\bar \tau )^2 } \mathord{\left/ {\vphantom {{(\bar \tau )^2 } {\overline {\tau ^2 } }}} \right. \kern-\nulldelimiterspace} {\overline {\tau ^2 } }}\], where τ is the time interval between two adjacent earthquakes and indicates the pattern of time sequences of earthquakes, has been applied to the 25 March 1986 Aegean Sea (Greece) earthquake (M L = 5.2) in an attempt to discover temporal changes in seismicity. The analysis of several earthquake sequences revealed that low ν-values preceded the occurrence of relatively large earthquakes. The ν-value technique may be used for monitoring the seismicity changes. |
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