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Fig. 5. | Earth, Planets and Space

Fig. 5.

From: Seismicity near the hypocenter of the 2011 off the Pacific coast of Tohoku earthquake deduced by using ocean bottom seismographic data

Fig. 5.

Hypocenter and focal mechanism distributions of earthquakes that occurred in 2011. The dots show hypocenters. The focal mechanisms estimated by F-net are colored according to its type classified by the rake angle—red: thrust (rake > 45°); green: strike-slip (−45° < rake < 45°); and blue: normal-fault (rake < −45°). (a) Before the mainshock (from 1 January, 2011, to the mainshock). (b) After the mainshock (mainshock to 24 May, 2011).

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