Skip to main content
Fig. 2. | Earth, Planets and Space

Fig. 2.

From: Spatio-temporal distribution of seismic moment release near the source area of the 2011 Tohoku-Oki earthquake

Fig. 2.

The available focal mechanisms from the GCMT (a) before the 2011 Tohoku earthquake mainshock (1976/01/01~2011/03/11), and (b) afte the mainshock (2011/03/11~2011/11/30) are plotted on the bathymetric map of the Japan subduction zone. The color scale corresponds to the depth range of the earthquakes. The stars in (a) are MW ≥ 7 events, which are also shown in Fig. 1. Five segments along the Japan Trench in and around the source are identified based on the characteristics of the faulting types. Blue stars show the epicenter of the 2011 Tohoku-Oki mainshock determined by USGS, JMA and GCMT. The P- and T-axis of the earthquakes in each segment are plotted.

Back to article page