Quake Watch 2011

reply to post by jjjtir


I'm sure these is left over from Fiji, but how many times are they going to go around. folkworm.ceri.memphis.edu...

Magnitude 5.1
Date-Time

Thursday, September 15, 2011 at 20:40:21 UTC
Thursday, September 15, 2011 at 06:40:21 PM at epicenter

Location 56.308°S, 26.820°W
Depth 105.3 km (65.4 miles)
Region SOUTH SANDWICH ISLANDS REGION
Distances

53 km (33 miles) NNE (30°) from Visokoi Island, South Sandwich Islands
300 km (186 miles) N (356°) from Bristol Island, South Sandwich Islands
2072 km (1288 miles) ESE (117°) from STANLEY, Falkland Islands
2804 km (1742 miles) ESE (115°) from Punta Arenas, Chile

Location Uncertainty horizontal +/- 18.1 km (11.2 miles); depth +/- 10.7 km (6.6 miles)
Parameters NST= 24, Nph= 25, Dmin=654.6 km, Rmss=0.55 sec, Gp= 68°,
M-type=body wave magnitude (Mb), Version=3
Source

Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)

Event ID usc0005vhb

earthquake.usgs.gov...

reply to post by foreshadower99

a chunk of the Pacific Plate which in the past few days has been shifting NW rapidly ( 5.5, 6.0, 5.5) has just fallen off into the mantle.

so say the subduction theorists

reply to post by muzzy


lol, It has fallen so far that it's about to hit the core
Get ready for "The Core"

reply to post by muzzy


Hmm, I'd be interested to know how they came to that conclusion. Thanks Muzzy. (link?)

There does seem to be a lot of energy release in the past 24 hours or so. The next 24 hours will be interesting...will it continue or quiet down I wonder?

That 7.3 (Mw) at 1,344,028 of TNT is 31.6 times the size of the Kermy 6.3 last night NZST and 501.2 times the size of the 5.5 the day before

with;

6.2, 12/09/2011 22:44, -3.638, 144.16, 35, near the north coast of new guinea, papua new guinea
6.1, 14/09/2011 18:10, 53.138, 173.022, 1, near islands, aleutian islands, alaska
6.0, 15/09/2011 7:53, -35.43, -177.878, 13, east of the north island of new zealand
6.2, 15/09/2011 8:00, 36.289, 141.308, 10, near the east coast of honshu, japan
7.3, 15/09/2011 19:31, -21.559, -179.369, 626, fiji region

sourc e

I think one could say we have somewhat of a result here for the Full Moon to Perigee Apogee phase of Sept.

Originally posted by zenius
reply to post by muzzy

 

Hmm, I'd be interested to know how they came to that conclusion. Thanks Muzzy. (link?)

geology12-7.wikispaces.com...

reply to post by muzzy


that was interesting, al those terms

I had to laugh when I read this

recumbent fold
When an anitcleine or a syncleine is pooshed so that the axis plane passes through the fold horizontaly

pooshed -

and we need an additional L for horizontaly

Clustering.

In the last 24 hours, we've had a few sizable quakes. Two of them were within 7 minutes of each other. Cuba was in that cluster, but got downgraded. For Cuba, a 5 is something and not nothing.

You can't make much of these quakes, but it's something to note. And when I make that mental note, I realized the last clustering series of quakes in the mid-western US are quieting. As I write, there was nothing on the radar at the moment.

Worldwide quakes increase and seem clustered. At the same time as the Eastern US settles down.
Coincidence? Or relationship?

Whatever the real answer, I'm convinced of clustering and a interrelationship on worldwide, and on a region basis. For whatever the reasons.

I won't even mention the moon. I noticed up there of course. I think the moon's greatest influence is when earth is at perihelion. Muzzy I'm glad you are taking note of the moon. You are more faithful than I and I'm the one convinced of the idea, and you are the skeptic. Given that I am a believer, even I can't say the moon was a direct trigger. But it's damn interesting to note.

I just got a notice that Utah had a 3.0 but it's not showing and now it goes off again with the Sandwich Islands getting a 5.1 and neither of them are showing up as just happening. Strange?????

reply to post by SusanFrey


ID - uu00008059

Google cache webcache.googleusercontent.com/search?q=cache:earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/uu00008059.php&hl=en

earthquake.usgs.gov/earthquakes/dyfi/events/uu/00008059/us/index.html Did You Feel It?

* This is a computer-generated message -- this event has not yet been reviewed by a seismologist.

Magnitude 3.0
Date-Time

* Thursday, September 15, 2011 at 22:01:50 UTC
* Thursday, September 15, 2011 at 04:01:50 PM at epicenter

Location 40.557°N, 109.684°W
Depth 0.3 km (~0.2 mile) (poorly constrained)
Region UTAH
Distances

* 13 km (8 miles) NW (320°) from Maeser, UT
* 17 km (10 miles) NW (312°) from Vernal, UT
* 21 km (13 miles) NW (311°) from Naples, UT
* 171 km (106 miles) ENE (78°) from Provo, UT
* 188 km (117 miles) E (96°) from Salt Lake City, UT

Location Uncertainty horizontal +/- 5 km (3.1 miles); depth +/- 25.3 km (15.7 miles)
Parameters NST= 24, Nph= 24, Dmin=110 km, Rmss=1.21 sec, Gp=162°,
M-type=duration magnitude (Md), Version=1
Source

* University of Utah Seismograph Stations

Event ID uu00008059

reply to post by jjjtir


No I didn't feel it, but my browser shook. LOL!!!

So you got it there, I guess I need to start checking my cache too.

reply to post by SusanFrey


No point in checking your cache for earthquakes that have been deleted! That deep 7.3 popped off a few deletions I guess. I don't see Utah - never made it to the 7 day list it seems but EMSC had Switzerland 4.1

NOTE: These are deletions from the lists NOT listed earthquakes

Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
2011-09-15 19:48:54, 47.043, 7.111, 4.1, 15.0, Switzerland
2011-09-15 19:42:08, 41.192, -122.170, 4.3, 76.8, Northern California
2011-09-15 11:02:09, 49.452, -127.154, 4.1, 22.0, Vancouver Island. Canada Region
2011-09-14 18:15:24, 60.908, -142.839, 3.1, 39.6, Southern Alaska
2011-09-14 18:10:10, 52.753, 172.998, 6.1, 40.0, Nr. Isls.
2011-09-12 00:25:12, 50.939, -173.348, 3.1, 57.8, Andreanof Isls.
2011-09-10 21:52:39, 19.765, -66.581, 4.4, 40.0, Puerto Rico Region
2011-09-10 21:52:38, 19.907, -66.596, 4.0, 47.0, Puerto Rico Region
2011-09-10 15:20:30, 29.707, 115.537, 4.5, 9.9, Hubei-Jiangxi Border Region. China
2011-09-09 19:41:30, 49.508, -127.009, 6.7, 2.0, Vancouver Island. Canada Region
2011-09-09 19:41:29, 49.500, -127.000, 6.7, 80.0, Vancouver Island. Canada Region

The sandwich islands are there OK

earthquake.usgs.gov...

Ham or cheese, or ham and cheese?

reply to post by SusanFrey


Does not mean anything unless you are an Italian Prof with an agenda. (He may have been a Doctor - a scientist anyway)

It happened last year as well and he created a stink saying the Gulf stream would stop etc etc doom doom doom, but guess what? It didn't. Now fancy that!!

Originally posted by muzzy
Heeeeeeeeeeeeeeeyyy you guys are slipping, this is supposed to be a 24/7 outfit

I can't stay up ALL night quakewatching

I think you missed this one, just before the Honshu quake and while the USA was playing Russia in the RWC.
I went to bed without checking USGS

Reference Number 3579668
Universal Time September 15 2011 at 7:53
NZ Standard Time Thursday, September 15 2011 at 7:53 pm
Latitude, Longitude 35.42°S, 178.45°W
Focal Depth 56 km
Moment magnitude 6.0
Region NE of New Zealand

Nope berkeleygal was on it

www.abovetopsecret.com...

reply to post by SusanFrey

When the Chilean earthquake occurred in 1960, seismographs recorded seismic waves that traveled all around the Earth. These seismic waves shook the entire earth for many days! This phenomenon is called the free oscillation of the Earth.

Earthquake facts: No 35

For eva ( well the modern version of for eva - about a couple of days)

Originally posted by Anmarie96
And Volcanoes toooo

Magnitude 4.3
Date-Time Thursday, September 15, 2011 at 19:42:08 UTC
Thursday, September 15, 2011 at 12:42:08 PM at epicenter

Location 41.192°N, 122.170°W
Depth 76.8 km (47.7 miles)
Region NORTHERN CALIFORNIA
Distances 7 km (5 miles) SSW (202°) from McCloud, CA
9 km (6 miles) ESE (111°) from Dunsmuir, CA
18 km (11 miles) SE (139°) from Mount Shasta, CA
55 km (34 miles) NW (310°) from Burney, CA
70 km (44 miles) NNE (14°) from Redding, CA
299 km (186 miles) N (349°) from Sacramento, CA

Location Uncertainty horizontal +/- 10.8 km (6.7 miles); depth +/- 8.1 km (5.0 miles)
Parameters Nph= 5, Dmin=10 km, Rmss=0.18 sec, Gp=259°,
M-type=regional moment magnitude (Mw), Version=3
Source California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR

Event ID nc71647456

Source

Since the above source link goes to a 404, here is another source

Hello All. I've been lurking in the Fragile Planet forum for a while, but this "phantom/disappearring" quake has spurred me to become a member.

I checked the theoretical p-wave travel times for the Fiji 7.3 quake 19:31:03 UTC , and it showed approximately 11-12 minutes to northern California. That would be about 19:42:00, same as the USGS reported, albeit, briefly, for the Shasta area quake.
Here is a seismogram from about 75km south of the Mt. Shasta area quake. Lassen Seismo

So I'm guessing the instrumentation was just tricked into thinking it had its own quake, and that is why USGS deleted it? Deleted

Wouldn't the Fiji quake's waves have had to "bump" into something at that location (76.8 km deep), to signal a quake? And if it did "bump" into something, could it have been a magma chamber? If I remember my geology 101, S-waves can't travel through liquid. (I could have this last part wrong, wrong--my memory is becoming wonky)

I'm just learning, so please feel free to set me straight.

Originally posted by Olivine
Wouldn't the Fiji quake's waves have had to "bump" into something at that location (76.8 km deep), to signal a quake? And if it did "bump" into something, could it have been a magma chamber? If I remember my geology 101, S-waves can't travel through liquid. (I could have this last part wrong, wrong--my memory is becoming wonky)

I'm just learning, so please feel free to set me straight.

Well actually they do travel through melt and partial melt, but they slow down. For this reason they are called "low velocity zones." They play a big part in seismic tomography mapping, where they use seismic waves, and even artificial explosions to map wave velocities through different rock strata. This helps them make educated guesses about what's down there near subduction zones, volcanoes, and other places.

And btw, welcome to ATS my friend. Nice to see you so far along, checking wave arrival times.

And here, for your efforts, have your first star on me!

As to deleted events, I don't really see any conspiracy in it myself. And that's coming from an avid conspiracy theorist.

With all the auto notification going on in seismic software these days, there are continual errors. It just goes with the territory, imo. Which is why I prefer to monitor seismic stations directly using GEE.

So as not to feel left out....or maybe as a 'foreshock' to todays events, here is the UK's contribution!
2011/09/14 17:56:01.0 56.341 -5.124 12.2 2.1 INVERARAY,STRATHCLYDE 10KM N OF INVERARAY

Rainbows
Jane

reply to post by TrueAmerican


I love learning--Thank you so much for the refresher on low velocity zones. I had a sinking feeling I didn't have that concept quite right. And thank you for the star. (wonders to herself, "What are stars?"--hehe)

Back to studying,,,