11 replies to this topic

[foster]

What's this, New Madrid?

Quote

Magnitude 4.0
Date-Time

* Tuesday, February 21, 2012 at 09:58:43 UTC
* Tuesday, February 21, 2012 at 03:58:43 AM at epicenter
* Time of Earthquake in other Time Zones

Location 36.850°N, 89.409°W
Depth 5 km (3.1 miles)
Region SOUTHEASTERN MISSOURI

http://earthquake.us....38.-91.-89.php

[j24vt]

Yup

[irishbri74]

Pretty shallow. Surprised i don't see anything on CNN about it.

[turtlehurricane]

irishbri74, on 21 February 2012 - 09:05 AM, said:

Pretty shallow. Surprised i don't see anything on CNN about it.

Only MMI 4 has been observed, which is light shaking.

[Ed Lizard]

Pre-shock? Pretty sure the big Japanese quake a year ago had a pre-shock...

[mapgirl]

Ed Lizard, on 21 February 2012 - 09:39 AM, said:

Pre-shock? Pretty sure the big Japanese quake a year ago had a pre-shock...

Yup, the mid-west is gonna blow.

[irishbri74]

Ed Lizard, on 21 February 2012 - 09:39 AM, said:

Pre-shock? Pretty sure the big Japanese quake a year ago had a pre-shock...

And for every pre-shock, there's been 1000000's of you every day normal quake.

We'll never know. But that's for another disco.

[PSUBlizzicane2007]

Ed Lizard, on 21 February 2012 - 09:39 AM, said:

Pre-shock? Pretty sure the big Japanese quake a year ago had a pre-shock...

There's always one person who has to say it.

[Ed Lizard]

PSUBlizzicane2007, on 21 February 2012 - 10:30 AM, said:

There's always one person who has to say it.

And that foot is me!




Its ok, my Art Rosen moment has passed...

[j24vt]

One line of thinking is that because there is so little movement that perhaps the fault is shutting down: http://www.physorg.c...s156169464.html

Another possibility is that the plates are locked and pressure is building up.

I hope the first group is correct.

[PSUBlizzicane2007]

j24vt, on 21 February 2012 - 12:08 PM, said:

One line of thinking is that because there is so little movement that perhaps the fault is shutting down: http://www.physorg.c...s156169464.html

Another possibility is that the plates are locked and pressure is building up.

I hope the first group is correct.

"Based on artifacts found buried by sand blow deposits and from carbon-14 studies, previous large earthquakes like those of 1811–1812 appear to have happened around AD 1450 and around AD 900, as well as approximately AD 300."

So basically, this fault zone has a major earthquake series every 400-600 years. We're about halfway through to seeing the next big one there.

[BeauDodson]

Felt it here - woke me up - could hear some popping noises and shook the bed. Enough to wake me up and wonder if it was a quake - went back to bed - saw the info this morning.