Mystery 'boom' in Appling confirmed as minor quake

Minor temblor in Appling confirmed

Tuesday, April 24, 2012 4:03 PM
Last updated 8:23 PM
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A mysterious boom that shook portions of Appling late Monday was confirmed Tuesday as a minor earthquake, according to Columbia County authorities.

The event, which registered a 2.1 magnitude on the Richter scale, occurred at 9:26 p.m. and was located near Columbia and Appling-Harlem roads, Emergency Services Director Pam Tucker said.

The temblor was not listed on national earthquake monitors, but was confirmed by a seismologist at Savannah River Site, she said.

“This would explain the loud boom and shaking that many residents felt,” she said.

Earthquakes occur periodically in the area, which lies along the fall line, where the Coastal Plains and Piedmont regions meet.

For decades, scientists have monitored the region around the U.S. Army Corps of Engineers’ earth-and-concrete Thurmond Dam for seismic activity, which has included dozens of small quakes.

According to the National Earthquake Information Center in Golden, Colo., Thurmond Lake is one of the major earthquake centers in Georgia and South Carolina, where pressure changes caused by water in reservoirs can promote seismic movement.

The largest recent quake in the lake area occurred in Lincoln County on Aug. 2, 1974, and registered 4.2. Three other quakes were recorded in nearby Edgefield County, S.C., in 1996, measuring 2.5, 2.3 and 2.2.

Experts say Augusta is unlikely to experience a serious quake.

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bdouglas
5457
Points
bdouglas 04/24/12 - 04:33 pm
1
0
How does an 'earthquake' that

How does an 'earthquake' that only registered at SRS explain away a boom? Seems like it would be the other way around...that a boom would register as an earthquake, if large enough.

Trouble
2506
Points
Trouble 04/24/12 - 04:34 pm
1
1
hmmmm, maybe that little boom

hmmmm, maybe that little boom did amount to something.........

Riverman1
87571
Points
Riverman1 04/24/12 - 05:08 pm
0
0
So what? It didn't even

So what? It didn't even register on the traditional seismic meters. It had to be picked up on a local, special seismological device, where it would have never been noticed in communities without such devices. Big deal. What are we trying to say? Want us to scream and cry?

Riverman1
87571
Points
Riverman1 04/24/12 - 05:36 pm
0
0
"The epicenter was centered

"The epicenter was centered at "such and such intersection." Are we being serious? LOL.

seenitB4
91146
Points
seenitB4 04/24/12 - 05:42 pm
0
1
If you were at that

If you were at that intersection when the "boom" happened ...ya might have a different attitude!

AutumnLeaves
8613
Points
AutumnLeaves 04/24/12 - 05:48 pm
3
0
Conditions are very dry and

Conditions are very dry and very windy in the CSRA Riverman1. So do you really think the best thing to do is ignore anything that "goes boom"? I appreciate the report and hope it WAS nothing more than an earthquake. That would be a relief. If something had ignited to cause the explosion everyone affected by a spreading fire would have been complaining that nobody had reported it and/or checked into it. If I had heard it, I sure would have been calling to report it.

seenitB4
91146
Points
seenitB4 04/24/12 - 05:51 pm
0
1
Men put up a tough front

Men put up a tough front ALeaves.....

TCB22
677
Points
TCB22 04/24/12 - 06:45 pm
2
0
Yes, Riverman. Scream and

Yes, Riverman. Scream and cry. You are turning into a grouch.

AutumnLeaves
8613
Points
AutumnLeaves 04/24/12 - 11:43 pm
0
0
I've noticed one like that

I've noticed one like that soapy_725. Near Mineral Virginia. There have been many small earthquakes for a long time in that area, and there is a Nuclear Plant near there.

Riverman1
87571
Points
Riverman1 04/25/12 - 01:04 am
1
0
TCB22, for goodness sakes,

TCB22, for goodness sakes, I'm just having a little fun with the boom thing. Lighten up before YOU turn into a grouch.

itsanotherday1
45610
Points
itsanotherday1 04/25/12 - 06:33 am
0
0
I ask again, what are you

I ask again, what are you going to report? I heard a boom in western Columbia County? How is that going to benefit anyone? Unless you can pinpoint the activity with specifics, you are whistling into the wind as far as public safety is concerned.

etlinks
22284
Points
etlinks 04/25/12 - 06:43 am
0
1
Where in this article is

Where in this article is mention of a fault under SRS ? If you don't know the history of SRS don't just make things up. Thanks to SRS they knew it was a earthquake. Seems to me that Clarks Hill dam would have more sensitive monitors since it is one of the major earthquake centers.

itsanotherday1
45610
Points
itsanotherday1 04/25/12 - 07:56 am
0
0
elinks; it is common

elinks; it is common knowledge of the earthquake risk along the "fall line".
This : http://earthquake.usgs.gov/earthquakes/states/georgia/hazards.php

is a earthquake hazard map, and you can clearly see that from Atlanta north and east, The risk goes up and up until you get to Charleston, and SRS is in that trajectory.

etlinks
22284
Points
etlinks 04/25/12 - 09:51 am
0
1
itsanotherday1- I was aware

itsanotherday1- I was aware of the fault that runs under SRS but my point is the article was not about SRS or "nuclear facilities" but thank you for the info.

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