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 |