Did You Feel the Major Quake in PNG? Check Out the Seismograms!

[davenn]

M 7.5 just tailing off, located in the channel between eastern New Britain and southern New Ireland, PNG
http://earthquake.usgs.gov/earthquakes/eventpage/us10001rvu#general_summary

my seismograms ...
hi gain channel...
http://www.sydneystormcity.com/seismograms.htm

low gain channel ...
http://www.sydneystormcity.com/zlo1.gifcheers
Dave

 

[Greg Bernhardt]

Tying the Volcano thread with this... Having an earthquake near a Volcano is bad right?

http://www.cnn.com/2015/03/29/asia/papua-new-guinea-earthquake/index.html

 

[davenn]

well in the case of subduction zone quakes, its the subducting crust/ lithosphere that provides melt material that will eventually come back up
in eruptions. Quakes in today's quake region and a bit further west would be responsible for "feeding" the Rabaul volcanoes not far to the north/NW.

Remember the subduction, melting and rising of the resulting magma is on very long time periods. So a big quake there today, doesn't infer an eruption in the near future. Any near future eruptions would be from already existing rising plumes. Its just a long ongoing process

Dave

 

[davenn]

One of the channel seismograms from this event ...

 

[davenn]

I was lucky to get this quake yesterday. Some hours after it occurred and just after I saved the files
the computer that runs the seismo recorder failed. Look like the mother board has fallen over

Several weeks ago a friend gave me his old computer system and after spending some time cleaning out all his programs and other stuff
I was able to install the logging software and get it up and running again. Just in time to record a M 5.5 from the central Indian Ocean
and this morning a M 5.7 aftershock from the Tonga Samoa region quakes.
I missed recording the Tonga Samoa region quakes last nite as the system was in the middle of multiple failures
They were a M 6.4 and a M 6.5 around 30 minutes apart

The joys of live science

cheers
Dave