Figure 2
From: Nucleation process of the 2011 northern Nagano earthquake from nearby seismic observations
Space–time characteristics of seismicity. (a) Cross-section along the profile AA’ in Fig. 1a. “West” and “East” indicate the two regions referred in the text and the curved line shows an approximate separation. Horizontal axis indicates the distance from the M6.2 hypocenter along the AA’ direction. Thick straight dashed line denotes the fault plane7 of the M6.2 earthquake. Pink star shows the M6.2 mainshock. Small gray circles indicate one-month relocated Hi-net aftershocks (M ≥ 1.0) of the M6.2 earthquake. (b) Depth versus time plot for the MFT-detected events in the study region. Green and blue circles or diamonds correspond to the “East” and “West” clusters, respectively. Size of circles scale with the corresponding events’ magnitude. Diamonds indicate small events for which was not possible to determine reliably magnitudes. Pink star shows M6.2 mainshock.
