Kyushu Region

a) A shallow M4.1 earthquake occurred on 28 February in the Aso region of Kumamoto Pref. (maximum intensity: 4).

Note:
M=magnitude
N: total number of events in the figure
depth=depth of hypocenter
UND=Earthquakes of less than M1.0 and earthquakes whose magnitude was not recorded.
The key to the symbols shows on the left the size of an earthquake and on the right the depth of the hypocenter.

Japan Meteorological Agency,Science and Technology Agency

Seismic Activity in Japan February 2000