S off Mindanao M7.0 (2021/Jan/21)

(2021/1/22 update)

Fig.1 : Hypocenter distribution by data of PHIVOLCS, from 2011 Jan. 1st to Jan. 21 21:20(UT+9h), M>=5, Depth=<125km. The Large cross shows the epicenter of this events. It is M7.2, depth 125km. The depth is some deeper than the real depth, because of the limitation od the seismic network of PHIVOLCS.


Fig.2 : Hypocenter distribution by the data of USGS, from 1964 Jan. 1st to 2021 Jan. 21(UT),M>=4, Depth=<700km. The mainshock is M7.0 , Jan. 21日12:23(JST Jan.21 21:23).


Fig.3 : M-Time figure of events in the square of Fig.2. The detectivity was some low until the middle of 1990s. From 2013, the distribution of M was some strange.


Fig.4 : The cross-section of events in the square of Fig.2.