Oklahoma Earthquake Activity

[venture]

Yes! It's a good movie and I enjoyed it. That was a bit odd that they were able to divert the shifting around the nuclear plant. They wasn't able to stop it, but the blast so powerful was able to direct it.

I wonder if this fault can actually split open and the gulf come rushing in? How possible is it?

Just wondering, have there been an earthquake anywhere in the world that split open exposing the lava down below?

Possible? Not very. Probable - maybe. However, when talking geology the time frame must be looked at a much broader scale. In Ethiopia right now is a perfect example of a rift that has developed in the crust.





Many expect that this is the start of a new ocean. However, it just started to form in 2005. This will be a process that will continue for many years long after we've been recycled many times over.

However, it needs to be understood that is a gradual process of tearing. I can't find anything where an earthquake exposed magma away from an existing volcanic system.

[westsidesooner]

Nice find venture..remindes me of the rift zone crossing Iceland.

I vaguely remember the movie Thunder was talking about, or maybe it was one of those discovery or science channel specials....I watch alot of that stuff so I get them confused, and it did show North America being split down the middle and a new ocean forming there.....but it seemed like they were talking about a time period of millions of years. The plates dont move very fast (maybe a few inches a year) and since there is no current plate boundary under Oklahoma I think we're safe.

With all the curent earthquake activity it will be interesting to see what happens over the next few weeks and months though. Was todays quake the "big one" by our standards, or will there be a slightly stronger quake to follow? Gotta love Oklahoma. Just when I was getting bored for the lack of interesting weather!!!!!

[Thunder]

Today was a fine line between minor and major.

[venture]

Actually it wasn't. KOCO's graphic is highly inaccurate and they should be ashamed of having it up.

Some references from quality sources:



FAQs - Measuring Earthquakes

The Severity of an Earthquake

Richter Magnitude

Also on the USGS's map, it has the relation between Intensity to Shaking felt to Damage expected.

[mheaton76]

Does the depth of the quake also make a difference? For instance, the one in Haiti I read was just 10 feet below the ground, which made the impact all the more devastating.

Does the data indicate the depth of the two earlier today? I couldn't tell from the USGS site.

[ronronnie1]

Yes, depth matters. The Haitian quake happened 6 miles below the earth's surface. This is why the level of destruction is so severe.

[Bunty]

But the most severe shaking was over a small area of Haiti.

[venture]

Here is a quick comparrison. Mind you the OK depth measurements aren't all that accurate - which is why they are deploying more equipment to get a handle on this swarm.

Magnitude
7.0
Date-Time
Tuesday, January 12, 2010 at 21:53:10 UTC
Tuesday, January 12, 2010 at 04:53:10 PM at epicenter
Time of Earthquake in other Time Zones
Location
18.457°N, 72.533°W
Depth
13 km (8.1 miles) set by location program
Region
HAITI REGION
Distances
25 km (15 miles) WSW of PORT-AU-PRINCE, Haiti
130 km (80 miles) E of Les Cayes, Haiti
150 km (95 miles) S of Cap-Haitien, Haiti
1125 km (700 miles) SE of Miami, Florida
Location Uncertainty
horizontal +/- 3.4 km (2.1 miles); depth fixed by location program

------

Magnitude
4.0
Date-Time
Friday, January 15, 2010 at 15:18:25 UTC
Friday, January 15, 2010 at 09:18:25 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.592°N, 97.258°W
Depth
5 km (3.1 miles) set by location program
Region
OKLAHOMA
Distances
4 km (3 miles) NE (44°) from Jones, OK
10 km (6 miles) SE (143°) from Arcadia, OK
10 km (6 miles) SW (218°) from Luther, OK
28 km (17 miles) ENE (64°) from Oklahoma City, OK
313 km (195 miles) N (352°) from Dallas, TX
Location Uncertainty
horizontal +/- 6.5 km (4.0 miles); depth fixed by location program

[Thunder]

It's not that deep....

[OKCisOK4me]

Then they must have given the wrong information on Channel 4 last night. They said that if our 3 miles below the surface quake had been 6 miles below that we wouldn't have felt it. But the Haiti quake was 8 miles below? I think the obvious answer is what kind of fault you have and what kind of motion results from the shifting of the earth's crust.

[venture]

Magnitude
3.7
Date-Time
Sunday, January 24, 2010 at 07:14:52 UTC
Sunday, January 24, 2010 at 01:14:52 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.564°N, 97.298°W
Depth
10 km (6.2 miles) set by location program
Region
OKLAHOMA
Distances
1 km (0 miles) W (266°) from Jones, OK
9 km (5 miles) NNE (19°) from Nicoma Park, OK
9 km (6 miles) NE (46°) from Spencer, OK
23 km (14 miles) ENE (67°) from Oklahoma City, OK
311 km (193 miles) N (351°) from Dallas, TX
Location Uncertainty
horizontal +/- 12.9 km (8.0 miles); depth fixed by location program
Parameters
NST= 8, Nph= 8, Dmin=141.6 km, Rmss=0.94 sec, Gp=133°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=6
Source
USGS NEIC (WDCS-D)
Event ID
us2010rwan

[Thunder]

Oh my god!

[MrZ]

Was just about to post about the quake tonight. People next door are having a party and I thought one of them had blown something up lol. Gave the house a pretty good jolt.

[Thunder]

I didn't even feel it. :*(

[venture]

Couple creaks down here in Norman, first time I'm noticed anything.

One difference from the other quakes, this one was centered deeper than the previous ones.

[Thunder]

So, is that good or bad that it is deeper? Does that say anything?

[mack1520]

I live in Choctaw. This one felt more powerful than any of the previous ones. Unlike the others which were over before you could even respond, this one shook the house for at least 5 seconds. I was asleep and actually had time to wake up, realize what was going on, and get completely out of bed before the shaking stopped. I would love to hear someone's take on what the hell's going on. This is getting rediculous.

[Thunder]

On the news. portion of the ground had just opened and lava is shooting out right now. It's amazing sight to see! :-O

[otis]

We had another earthquake about 1:30 am. Felt it in Midwest City around Post and
29th. It felt like the one we had Jan 15th.

[okie75]

I am in Choctaw the last quake on Sunday morning the 24th Jan was preceded by weird clouds and blue shy between them, when the rest of the sky was red, the sun was almost set. I'm not saying it was HAARP or anything but I made the comment on Twitter, oh look earthquake lights NW Choctaw. The clouds and color were very strange, wondering if anyone took pictures that night, would have been a good shot for a photo buff.

[Bunty]

Sounds simply like a prettier than usual Oklahoma sunset.

[venture]

Magnitude
2.5
Date-Time
Monday, February 01, 2010 at 23:43:04 UTC
Monday, February 01, 2010 at 05:43:04 PM at epicenter
Time of Earthquake in other Time Zones
Location
35.547°N, 97.236°W
Depth
5 km (3.1 miles) set by location program
Region
OKLAHOMA
Distances
5 km (3 miles) ESE (112°) from Jones, OK
8 km (5 miles) NNE (22°) from Choctaw, OK
9 km (6 miles) NNW (329°) from Harrah, OK
28 km (17 miles) ENE (75°) from Oklahoma City, OK
308 km (192 miles) N (352°) from Dallas, TX
Location Uncertainty
horizontal +/- 9.3 km (5.8 miles); depth fixed by location program
Parameters
NST= 9, Nph= 9, Dmin=24 km, Rmss=1.1 sec, Gp=108°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=R

[Oh GAWD the Smell!]

Damn. AGAIN?

[Oh GAWD the Smell!]

I am in Choctaw the last quake on Sunday morning the 24th Jan was preceded by weird clouds and blue shy between them, when the rest of the sky was red, the sun was almost set. I'm not saying it was HAARP or anything but I made the comment on Twitter, oh look earthquake lights NW Choctaw. The clouds and color were very strange, wondering if anyone took pictures that night, would have been a good shot for a photo buff.

Your tinfoil hat needs adjusting.

[mugofbeer]

Smokin' the funny weed?