Figure2-13 The direction of the propagation of fault motion (rupture) and aftershock distribution for the 1994 Earthquake far off the Coast of Sanriku and the 1995 Southern Hyogo Prefecture Earthquake.
This shows the hypocenter of the main shock (indicated with circle: the point where rupture began), fault motion (rupture) and its direction of propagation (arrow), as well as the distribution of aftershocks which occurred within one day after the main shock. The range of distribution of the aftershocks in the figure is estimated to be the source region of the main shock (the range where the fault movement occurred).
A: The 1994 Earthquake far off the Coast of Sanriku
Rupture began near the Japan Trench (indicated with circle), and the fault movement proceeded in a generally western direction. The direction of prepagation headed toward Hachinohe City (Hatinohe-shi).
[Compiled from data from Tohoku University]
B: The 1995 Southern Hyogo Prefecture Earthquake
Rupture began near the Akashi Channel (Akasi Kaikyo) (indicated with circle), and fault motion proceeded in a northeast direction (toward Kobe City (Kobe-shi) and a southwest direction (toward Awaji Island (Awazisima)).
[Compiled from JMA data]