2013 Oklahoma Earthquake Discussion

[venture]

With this spate of recent activity, seems like more could be coming. Wonder if we'll have another 5.6 type event....

Definitely seems the fault has a lot of pressure built up to get out. I wouldn't be shocked to see another 5.0+ event. Just like we'll probably have a few more 4.0+ events.

I think 3.5 is about my threshold for noticing. Anything below that and I just don't feel it.

Yeah here I haven't felt anything below a 4.0 so far. Now those folks in Luther are probably tired of the constant shaking all the time. LOL

[venture]

2013-04-16 12:09:01.722000 cdt 35.679 +/- 2.7 -97.107 +/- 2.5 2.5 +/- 0.0 3.4 ml ogs
2013-04-16 12:07:19.561000 cdt 35.673 +/- 1.6 -97.114 +/- 1.2 2.3 +/- 0.0 3.7 ml ogs

[venture]

A lot of activity in the last 24 hours:

http://www.okgeosurvey1.gov/

Sid that's what I've been posting. LOL Scroll up.

[Praedura]

I think Jerry Lee Lewis said it best...

"there's a whole lotta shakin' going on"

[SoonerQueen]

[QUOTE=Praedura;636525]I think Jerry Lee Lewis said it best...

"there's a whole lotta shakin' going on"

[Praedura]

Nearly overlooked it, with all the events, but the OGS list has the quake at just before 2am this morning as 4.7 instead of the widely reported 4.3.

As strongly as I felt it, I'm inclined to believe the 4.7 figure.

[venture]

Nearly overlooked it, with all the events, but the OGS list has the quake at just before 2am this morning as 4.7 instead of the widely reported 4.3.

As strongly as I felt it, I'm inclined to believe the 4.7 figure.

Be careful. I think OGS and USGS use different scales that have a variance to them. Would have to google or ask them on the different measurements, but I know they are always a bit different.

[venture]

A couple of us posted this one already, but USGS finally got it.

Parameter	Value	Uncertainty
Magnitude	3.5 mb_Lg	± 0.06
Location	35.690°N, 97.095°W	± 18.9 km
Depth	8.9 km	± 10.7 km
Number of Stations Used	90
Number of Phases Used	108
Minimum Distance	17.8 km (0.16°)
Travel Time Residual	1.73 sec
Azimuthal Gap	25°
Review Status	REVIEWED
Event ID	usb000g85t

[Praedura]

Be careful. I think OGS and USGS use different scales that have a variance to them. Would have to google or ask them on the different measurements, but I know they are always a bit different.

That's not very useful. They might want to get together and agree on a measurement system.

[OKCisOK4me]

Oklahoma also measures alcohol in beer differently. Go figure...

[venture]

2013-04-16 14:05:45.106000 cdt 35.677 +/- 3.1 -97.087 +/- 2.7 2.5 +/- 0.0 1.8 ml ogs
2013-04-16 14:02:17.528999 cdt 35.663 +/- 3.1 -97.126 +/- 2.6 2.5 +/- 0.0 2.6 ml ogs
2013-04-16 14:00:47.219000 cdt 35.660 +/- 3.3 -97.119 +/- 2.7 2.5 +/- 0.0 1.8 ml ogs

[Praedura]

2013-04-16 14:05:45.106000 cdt 35.677 +/- 3.1 -97.087 +/- 2.7 2.5 +/- 0.0 1.8 ml ogs
2013-04-16 14:02:17.528999 cdt 35.663 +/- 3.1 -97.126 +/- 2.6 2.5 +/- 0.0 2.6 ml ogs
2013-04-16 14:00:47.219000 cdt 35.660 +/- 3.3 -97.119 +/- 2.7 2.5 +/- 0.0 1.8 ml ogs

plus

2013-04-16 16:03:05.014000 CDT 35.546 +/- 2.5 -96.772 +/- 1.7 2.5 +/- 0.0 3.2 ML OGS

[venture]

Parameter	Value	Uncertainty
Magnitude	3.0 mb_Lg	± 0.07
Location	35.566°N, 96.731°W	± 5.4 km
Depth	5.0 km	± 2.7 km
Number of Stations Used	6
Number of Phases Used	6
Minimum Distance	10.0 km (0.09°)
Travel Time Residual	0.09 sec
Azimuthal Gap	158°
Review Status	REVIEWED
Event ID	usb000g8hh

[Bunty]

So has there been a lot of fracking going on in recent years in the earthquake area, or not?

[venture]

Looks we we had another at 4:52 going by the seismogram image. I did notice a short rumble and noted the time and it just popped up on the image.

[Praedura]

Looks we we had another at 4:52 going by the seismogram image. I did notice a short rumble and noted the time and it just popped up on the image.

I thought I noticed one at 4:51pm. Probably around a 3.5 based on my earlier observation. I'm waiting for a 16:51 event to show up on one of the lists.

[venture]

UPDATE from OGS: 2013-04-16 16:51:21.213000 CDT 35.663 +/- 1.7 -97.120 +/- 1.4 2.3 +/- 0.0 3.6 ML OGS

Here it is from USGS...

Parameter	Value	Uncertainty
Magnitude	3.6 mb_Lg	± 0.05
Location	35.808°N, 97.162°W	± 4.8 km
Depth	4.9 km	± 3.1 km
Number of Stations Used	8
Number of Phases Used	8
Minimum Distance	28.9 km (0.26°)
Travel Time Residual	0.49 sec
Azimuthal Gap	213°
Review Status	REVIEWED
Event ID	usb000g8jc

[Praedura]

I think I'll dedicate a tune to this latest round of activity...

Ooooooooklahoma, where the land quakes right beneath your feet
And the seismic waves - can sure sound grave - when the rumbling hits your local street

(everybody sing along!)

[venture]

I think I'll dedicate a tune to this latest round of activity...

Ooooooooklahoma, where the land quakes right beneath your feet
And the seismic waves - can sure sound grave - when the rumbling hits your local street

(everybody sing along!)

/slap

Now go to your corner and think of what you just did. Stupid song stuck in my head...grumble grumble.

[PennyQuilts]

I've felt dizzy several times today. I am not prone to that. Beginning to think I was responding to all these earthquakes and didn't realize it. In fact, I didn't know we were having earthquakes until I checked in a few minutes ago.

[Praedura]

/slap

Now go to your corner and think of what you just did. Stupid song stuck in my head...grumble grumble.

I'm being given a time out???

[SoonerDave]

I think I'll dedicate a tune to this latest round of activity...

Ooooooooklahoma, where the land quakes right beneath your feet
And the seismic waves - can sure sound grave - when the rumbling hits your local street

(everybody sing along!)

This is great stuff.

Oooooooklahoma, every night my Richer scale and I...
Sit thru aftershocks and pendulum clocks,
Making wobbly circles in the sky!!!

We know we shake right with the land
And the shaking ain't from a lousy rock band...

But when we sayyy....YO...i think I"ll shake all day...
We're only saying You're shakin' fine Oklahoma...

...now creeping off to same corner with Praedura for my part of the timeout ...

[Praedura]

At the link below, you can read the posts of people who reported "feeling" the quake:

2 earthquakes (1 minor and 1 moderate) hit Luther, Oklahoma + M4.2 aftershock at 05:17 local time

Seems to be mostly about the 4.3 one that hit around 2am. Interesting (and occasionally humorous) comments.

[Praedura]

This is great stuff.

Oooooooklahoma, every night my Richer scale and I...
Sit thru aftershocks and pendulum clocks,
Making wobbly circles in the sky!!!

We know we shake right with the land
And the shaking ain't from a lousy rock band...

But when we sayyy....YO...i think I"ll shake all day...
We're only saying You're shakin' fine Oklahoma...

...now creeping off to same corner with Praedura for my part of the timeout ...

epic!

[PennyQuilts]

Some of the comments were a hoot.