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Table 2 Comparison of Akaike Information Criterion (AIC) values among the four assumed source mechanisms. The residuals E are based on Eq. (2). Results of the first search (Table 1) are shown

From: Source mechanism of a VLP event immediately before the 2014 eruption of Mt. Ontake, Japan

Mechanism E (%) AIC value
An isotropic source 70.5 −585
A tensile crack 56.1 −1024
A volume change of a pipe 61.3 −765
A single force 60.7 −945