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Earth, Planets and Space
Fig. 1. | Earth, Planets and Space

Fig. 1.

From: Outline of the 2011 off the Pacific coast of Tohoku Earthquake (Mw 9.0) —Seismicity: foreshocks, mainshock, aftershocks, and induced activity—

Fig. 1.

(a) Epicenters of earthquakes off the Pacific coast of the northeastern part of Honshu, Japan with M ≥ 5.0, depth ≤ 90-km from Mar. 8, 2011 to Mar. 31, 2011. Origin times and magnitudes are noted for earthquakes of more than or equal to M 7.0. Beach balls indicate CMT solutions with lower hemisphere of equal-area projection. As the aftershock area, we defined a 500-km × 200-km rectangular area where earthquakes more than or equal to M 5.0 occurred within a week after the mainshock. (b) Spatial-temporal distribution of earthquakes within the rectangle along line A–B in (a). (c) Plot of magnitude and cumulative numbers of events versus time within the rectangle in (a).

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