Seismogram: M 6.8 & 7.1 Earthquakes in Eastern New Britain, PNG

[davenn]

initial listing is a M 7.1 eastern New Britain, PNG

this is following the M 6.8 that occurred at that location yesterday

the 6.8 can be seen near the top of the seismogram and the 7.1 at the bottom
http://www.sydneystormcity.com/seismograms.htmDave

 

[davenn]

OK the amplitude isn't as large or as sustained as yesterday's event and the ~ 6km difference in depth wouldn't account for the difference in amplitude between the two events

I'm expecting the magnitude the probably be revised down to around 6.8 +- 0.2

Dave

 

[AdityaDev]

Earthquake of magnitude 5.1 in andaman and nicobar islands.

 

[Astronuc]

M6.8 - 106km SSW of Kokopo, Papua New Guinea - 2015-05-01 08:06:04 (UTC)
http://earthquake.usgs.gov/earthquakes/eventpage/us20002am6#general_summary

and

M6.7 - 125km SSW of Kokopo, Papua New Guinea - 2015-04-30 10:45:05 (UTC)
http://earthquake.usgs.gov/earthquakes/eventpage/us20002ag9#general_summaryAbout 20 km apart

 

[AdityaDev]

Why so many earthquakes? And i heard someone saying that India is shifting.

 

[nsaspook]

Why so many earthquakes? And i heard someone saying that India is shifting.

Yes.

 

[davenn]

Why so many earthquakes? And i heard someone saying that India is shifting.

the numbers of quakes are no higher than normal. In fact over the last 6 months the numbers have been considerably lower than the average

I didn't watch that video yet, But I assume it's probably showing the movement of the Indian continent up into the Euro-Asian continent, which has been occurring for 100's of millions of years. That is all just part of plate tectonics

Dave

 

[davenn]

OK here's the seismogram for last nite's event
and as suspected it was downgraded from the initial M 7.1 to a M 6.8

cheers
Dave