Fig. 6.From: Seismic quiescence and activation anomalies from 2005 to 2008 beneath the Kanto district, central Honshu, Japan(a) Z-value distribution. The number of effective grid points is 517,974 in the alarm cube for the ERI non-declustered catalog. (b) Alarm cube. Vertical bold lines with a time length of 1.5 years indicate alarms with Z ≥ +5.0 (red, quiescence) or Z ≤ −3.8 (blue, activation).Back to article page