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Earth, Planets and Space
Fig. 7. | Earth, Planets and Space

Fig. 7.

From: Precise aftershock distribution of the 2011 off the Pacific coast of Tohoku Earthquake revealed by an ocean-bottom seismometer network

Fig. 7.

Focal mechanisms of the aftershocks are determined using data of polarities of first arrivals recorded by the OBSs. The aftershocks are classified by their depths. The event classified into the plate boundary region has distances between its hypocenter and the plate boundary is less than 5 km. In addition, focal mechanisms determined using F-net data are also plotted. For classification of F-net focal mechanisms, the OBS results were used for positions of the events. The F-net results are indicated by light color.

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