M6.9 Central Mid Atlantic Ridge -- NOW

[davenn]

This Mw 6.9 is a bit east and on a parallel transform fault section to the Mw 6.5 that I posted around 2.5 weeks ago

It's coming in on my seismo now
http://www.sydneystormcity.com/seismograms.htm

USGS info ..
https://earthquake.usgs.gov/earthquakes/eventpage/us7000bf3k/executive

The moment tensor "beachball" shows that it isn't a pure strike-slip motion
and that there is just a little amount of oblique slip motion as well.

cheers
Dave

 

[davenn]

A seismogram download after about 1.5 hours of signal received
There is around 40 minutes separation between the arrival of the P wave and the arrival of the Surface waves
The surface waves continued for over an hour ( I saved the image just before the surface wave train was about to over write the
first surface wave arrival)