Quake Watch 2011

NORTHERN NORTH SEA
February 13, 2011
Time: 19:29:00.9
Lat./Lon.: 58.405 1.973
National Grid: 632.1 km E, 953.1 km N
Depth: 10.0
Magnitude: 3.5
275KM NE OF ABERDEEN


www.earthquakes.bgs.ac.uk...

Another one in Chile:

Magnitude 5.4
Date-Time Monday, February 14, 2011 at 21:56:44 UTC
Monday, February 14, 2011 at 06:56:44 PM at epicenter
Time of Earthquake in other Time Zones

Location 20.024°S, 69.031°W
Depth 96.5 km (60.0 miles)
Region TARAPACA, CHILE
Distances 120 km (75 miles) E of Iquique, Tarapaca, Chile
220 km (135 miles) SE of Arica, Tarapaca, Chile
235 km (145 miles) WNW of Uyuni, Bolivia
1500 km (930 miles) N of SANTIAGO, Region Metropolitana, Chile

Location Uncertainty horizontal +/- 17.7 km (11.0 miles); depth +/- 3.4 km (2.1 miles)
Parameters NST=129, Nph=147, Dmin=71.2 km, Rmss=0.93 sec, Gp= 90°,
M-type=body wave magnitude (Mb), Version=6
Source USGS NEIC (WDCS-D)


Event ID usb0001e6k

Source - USGS

GERMANY 4.5 Mag according to Iris Monitor and German Newspapers.

www.iris.edu...

If you look at this earthquake in Arkansas.

maps.google.com...(M2.5+-+ARKANSAS+-+2011+February+14++18%3A28%3A39+UTC)&ll=35.3313,-92.2967&spn=2,2&f=d&t=h&hl=e

You'll notice there's a natural gas drilling pad nearby. A map of it showing how close it is would be neat.

The Quakes were near a Supervolcano (VEI6) en.wikipedia.org... Didnt even know we have a semi-active one here in Germany

Nothing to be worried about i think,unless more Quakes happen in the next few Days and the Hotspot moved since the last Time it broke out (like its theorized with Yellowstone)

This event has been reviewed by a seismologist.
Magnitude 4.7
Date-Time Tuesday, February 15, 2011 at 09:18:32 UTC
Tuesday, February 15, 2011 at 12:18:32 AM at epicenter
Time of Earthquake in other Time Zones

Location 52.861°N, 169.404°W
Depth 61.4 km (38.2 miles)
Region FOX ISLANDS, ALEUTIAN ISLANDS, ALASKA
Distances 35 km (25 miles) WSW of Nikolski, Alaska
90 km (55 miles) ENE of Yunaska Island, Alaska
1500 km (930 miles) WSW of Anchorage, Alaska
2265 km (1400 miles) W of JUNEAU, Alaska

Location Uncertainty horizontal +/- 23.2 km (14.4 miles); depth +/- 3.7 km (2.3 miles)
Parameters NST=203, Nph=207, Dmin=222.6 km, Rmss=0.91 sec, Gp=162°,
M-type=body wave magnitude (Mb), Version=7
Source USGS NEIC (WDCS-D)


Event ID usb0001ecg


This event has been reviewed by a seismologist.
Magnitude 5.4
Date-Time Tuesday, February 15, 2011 at 07:18:19 UTC
Tuesday, February 15, 2011 at 03:18:19 PM at epicenter
Time of Earthquake in other Time Zones

Location 21.135°N, 121.136°E
Depth 35.7 km (22.2 miles)
Region TAIWAN REGION
Distances 115 km (70 miles) NW of Basco, Batan Islands, Philippines
180 km (110 miles) S of T'ai-tung, Taiwan
435 km (270 miles) S of T'AI-PEI, Taiwan
720 km (450 miles) N of MANILA, Philippines

Location Uncertainty horizontal +/- 12.4 km (7.7 miles); depth +/- 0.7 km (0.4 miles)
Parameters NST=257, Nph=283, Dmin=185.9 km, Rmss=0.88 sec, Gp= 18°,
M-type=teleseismic moment magnitude (Mw), Version=B
Source USGS NEIC (WDCS-D)


Event ID usb0001ec4


earthquake.usgs.gov...

Another one...

Magnitude M 2.9
Region GERMANY
Date time 2011-02-15 12:15:45.0 UTC
Location 50.38 N ; 7.87 E
Depth 10 km
Distances 19 km E Koblenz (pop 107,319 ; local time 13:15:45.9 2011-02-15)
7 km SE Montabaur (pop 12,345 ; local time 13:15:45.9 2011-02-15)
4 km E Oberelbert (pop 1,072 ; local time 13:15:45.9 2011-02-15)


Source parameters provided by another agency

7 Aftershocks? I may not know much about Earthquakes,but i dont thing this is normal...

PuterMan,i´m pretty confused. This Seismo did register the Main one,but (if i read that right) not the Aftershocks (dont know how to get the Seismo from Yesterday,but i looked at it after it happened)

But This one did. Could you look at Those and those please?

I didnt find many if any aftershocks of past Quakes there...

New one:

Magnitude 6.1
Date-Time Tuesday, February 15, 2011 at 13:33:53 UTC
Tuesday, February 15, 2011 at 09:33:53 PM at epicenter

Location 2.470°S, 121.541°E
Depth 20.6 km (12.8 miles)
Region SULAWESI, INDONESIA

earthquake.usgs.gov...

reply to post by Shenon


Very interesting that, thanks. Not sure where the super volcano tag came from but the eruption 12,900 years ago was estimated as 6 km cubed, which is 994 km cubed short of a super volcano which is a VEI 8. (1000 km cu)

It would not of course be a good area to have any sort of volcano but Mother Nature is not that bothered about the ants that she would hold off!

reply to post by Shenon


I am taking a look at this now. Don't worry I don't think at first glance that there is anything to be concerned about here. I will get back you as soon as I have taken a good look at the data.

Thanks for those links by the way. I have added them to my list of links.

Originally posted by PuterMan
reply to post by Shenon

 

I am taking a look at this now. Don't worry I don't think at first glance that there is anything to be concerned about here. I will get back you as soon as I have taken a good look at the data.

Thanks for those links by the way. I have added them to my list of links.

Yep,thanks for looking into it. Considering that Germany isn´t known for much Activity,its not monitored much,which makes it hard to get real-time Data, and all this technical Stuff in all those Links is pretty confusing for a Novice

Edit: Found a nice Site with many Links Here Gonna look trough it now

reply to post by Shenon


Ok Shenon, here is the list from my database and the list from the links you gave.

Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
2011-02-15T12:15:45.000Z,50.38000,7.87000,2.9000,10.0000,GERMANY
2011-02-14T22:34:50.500Z,50.34000,7.80000,2.0000,10.0000,GERMANY
2011-02-14T19:35:09.000Z,50.28000,7.79000,3.0000,10.0000,GERMANY
2011-02-14T17:30:33.000Z,50.35000,7.83000,2.1000,12.0000,GERMANY
2011-02-14T17:23:35.000Z,50.13000,7.45000,3.7000,15.0000,GERMANY
2011-02-14T13:38:34.000Z,50.38000,7.86000,2.5000,2.0000,GERMANY
2011-02-14T12:50:44.000Z,50.35000,7.84000,3.2000,11.0000,GERMANY
2011-02-14T12:43:10.000Z,50.38790,7.88080,4.2000,5.0000,Germany
2011-02-11T15:40:04.700Z,51.48000,6.59000,2.5000,1.0000,GERMANY

and this is the list from the site you provided

15.02.2011 12:15, Nassau/Rhein-Lahn-Kreis/RLP, ML=2.5, 50.35N, 7.84E , 12
14.02.2011 22:34, Nassau/Rhein-Lahn-Kreis/RLP, ML=1.9 50.34N, 7.84E, 12
14.02.2011 19:35, Nassau/Rhein-Lahn-Kreis/RLP, ML=2.6 50.35N, 7.84E, 13
14.02.2011 17:30, Nassau/Rhein-Lahn-Kreis/RLP, ML=2.1 50.35N, 7.83E, 12
14.02.2011 17:23, Nassau/Rhein-Lahn-Kreis/RLP, ML=3.3 50.34N, 7.83E, 11
14.02.2011 13:38, Nassau/Rhein-Lahn-Kreis/RLP, ML=2.3 50.34N, 7.84E, 12
14.02.2011 12:50, Nassau/Rhein-Lahn-Kreis/RLP, ML=3.0 50.34N, 7.83E, 11
14.02.2011 12:43, Nassau/Rhein-Lahn-Kreis/RLP, ML=4.4 50.34N, 7.84E, 12
13.02.2011 20:19, Nassau/Rhein-Lahn-Kreis/RLP, ML=1.4 50.29N, 7.79E, 5*
12.02.2011 23:21, Bad Sobernheim/Lkrs, ML=0.8, 49.86N, 7.61E, 15*

7 Aftershocks?

Seven aftershocks from the 4.4 ML would not be out of the ordinary I would have to say. I depends really on what is the 'norm' for this area. You said you don't think this is normal but certainly in earthquake terms it would not be significant. The question is are you basing your feeling of what you know from living in the area, or just a feeling?

PuterMan,i´m pretty confused. This Seismo did register the Main one,but (if i read that right) not the Aftershocks (dont know how to get the Seismo from Yesterday,but i looked at it after it happened)

The IU Grafenburg seismo is showing the LHZ channel - and the smaller ones may not show on it. Also it depends how far Grafenburg is from the event.

Looking at the phase data Grafenburg must be some way from it

sta phase arrival res dist azm amp per mag amp per mag sta
WLF ePn 12:43:34.98 -1.1 1.3 238 L:3.7+0 .60 3.8 g:1.2+0 .90 4.1 WLF
eSg 12:43:54.52 S res = 1.0
STU ePn 12:43:42.16 -0.8 1.8 152 L:7.3+0 .65 4.4 g:5.1-1 .80 3.8 STU
eSn 12:44:09.48 S res = 3.0
BFO ePn 12:43:44.97 -1.4 2.1 172 L:2.8+0 .55 4.1 g:5.9-1 .70 3.9 BFO
eSn 12:44:12.67 S res = 0.0
GRFO ePn 12:43:49.75 0.9 2.3 107 g:2.7-1 .70 3.6 GRFO

The last entry is the one which is 36 seconds after the event and it was registered as a 3.6. I am thinking that this instrument is not that sensitive as even the BHZ channel only really registers the 4.2/4.4. At around 7km/sec that would make it 250km away or so.

GRA1.GR..BHZ.2011.045

The FACH station is right next to the 4.4, where as GRA1 is. as I said, a bit further away.

[atsimg]http://files.abovetopsecret.com/images/member/b9e4958d9b5e.png[/atsimg]

In fact looking at the quakes on the list, all bar one which is further NW from the FACH station are sort of right on top of it so really you picked a very good recorder to see the traces.

[atsimg]http://files.abovetopsecret.com/images/member/a6cd8831f2a9.png[/atsimg]

In my opinion, nothing to be concerned about.

Edit: Kewl. Just measured from the quake to GRA1 on GE. 249.5 km so 7km/sec worked well for this area.

reply to post by Shenon


That link looks as if it provides the same data as the other ones, but the first thing I noted was that on the earthquake list there are 904 events so I don't think you can say it is not seismically active! Not sure how far that list goes back yet but on my own database I only have 95 events in the past year but they stop at 2.0. This lsit seems to go right down to include the under 1.0 quakes. Good find!

Edit: Google Translation on the Registration page

[atsimg]http://files.abovetopsecret.com/images/member/7282695e797a.png[/atsimg]

I am sure that is not what it means. Any input on that Shenon?

reply to post by PuterMan


Hm,ok. It is active yes,but in Terms of Magnitudes,a 4.5 is significant in our Area and dont happen that often. I just found it odd that there are (so far) 7 Aftershocks for a "little" 4.5. Thanks again,lets see if it continues.

Here is a Wikipage from the Volcano. Interesting may be this paragraph:

The caldera was formed after the colossal Laacher See eruption dated to 12,900 years ago[1][2][3]. The remaining crust collapsed into the empty magma chamber below, probably two or three days after the eruption.[4] An estimated 6 km³ of magma was erupted,[5] producing around 16 km³ of tephra.[6] This massive eruption thus had a Volcanic Explosivity Index (VEI) of 6, and was larger than the colossal 1991 eruption of Mount Pinatubo (Philippines) which also had a VEI of 6 (10 km³ of tephra erupted).

Considering that those Quakes were very close to this one (including the Continental Drift,they may have been on top of the new Hotspot of that thing,but im no Expert in this Field obiously )


From your last Post,it doesnt mean "sold",but "giving" or "give" (mistranslation from Google,they don´t sell that Data)


Edit: Yeah,a feeling mostly and looking at past Quakes,i would say it is unusual. And looking at EMSC Data this one was felt pretty far,which doesnt happen very often.

Did some research to show you why i think it is unusual. This is the Data from EMSC from the last 2 Bigger ones:

2008-01-30 14:30:36.5 48.45 N 9.08 E 12 ML 2.3
2008-01-30 11:46:12.0 49.30 N 7.10 E 10 ML 2.1
2008-01-30 05:06:19.1 49.30 N 6.87 E 2 ML 2.7
2008-01-26 15:33:06.9 49.43 N 6.85 E 2 ML 2.7
2008-01-26 05:44:31.3 49.38 N 6.86 E 5 ML 3.7
2008-01-26 04:19:30.7 49.37 N 6.86 E 1 ML 3.6
2008-01-25 11:33:08.0 49.40 N 6.90 E 1 ML 2.4
2008-01-24 03:30:08.3 51.48 N 6.75 E 2 ML 3.6
2008-01-22 08:03:24.3 49.35 N 6.95 E 2 ML 2.9
2008-01-18 12:39:17.1 50.76 N 10.04 E 1 M 2.2
2008-01-18 07:43:13.0 49.40 N 6.80 E 1 ML 2.1
2008-01-16 19:30:24.6 49.39 N 6.87 E 2 ML 2.1
2008-01-16 10:42:03.0 49.40 N 6.85 E 10 ML 3.5
2008-01-10 11:17:34.0 49.39 N 6.92 E 8 ML 3.4
2008-01-09 16:26:28.0 49.40 N 6.90 E 1 ML 2.2
2008-01-08 22:18:07.0 49.40 N 6.70 E 1 ML 2.3
2008-01-07 15:04:11.0 49.40 N 7.00 E 10 ML 2.2
2008-01-04 09:53:41.8 49.41 N 6.86 E 10 ML 3.6
2008-01-03 09:48:59.2 51.84 N 11.63 E 1 M 2.0
2008-01-03 06:07:54.5 49.39 N 6.83 E 5 ML 4.2

2008-03-29 21:19:53.0 49.40 N 8.20 E 10 ML 2.1
2008-03-11 18:17:36.0 51.49 N 6.60 E 2 ML 3.4
2008-03-10 00:13:26.3 50.31 N 7.47 E 10 M 2.2
2008-03-07 05:06:50.1 48.65 N 8.52 E 10 M 2.4
2008-02-24 14:59:19.0 48.80 N 8.30 E 10 ML 2.0
2008-02-24 03:53:10.0 49.20 N 8.09 E 6 ML 2.0
2008-02-23 15:30:55.8 49.36 N 6.78 E 6 ML 4.4

Looking at those,this many Aftershocks in 1 or 2 Days is a little unusual in my Opinion.

This is the Data from the last one Yesterday:

2011-02-15 12:15:45.0 50.38 N 7.87 E 10 ML 2.9
2011-02-14 22:34:50.0 50.34 N 7.84 E 12 ML 1.9
2011-02-14 19:35:09.0 50.28 N 7.79 E 10 ML 3.0
2011-02-14 17:30:32.0 50.37 N 7.81 E 2 ML 2.1
2011-02-14 17:23:35.0 50.13 N 7.45 E 15 ML 3.7
2011-02-14 13:38:34.0 50.38 N 7.86 E 2 ML 2.5
2011-02-14 12:50:44.0 50.35 N 7.84 E 11 ML 3.2
2011-02-14 12:43:11.0 50.38 N 7.75 E 6 ML 4.5

Edit: Didnt include the smaller ones,too much research

20th mag 6 this year according to USGS/NEIC

Magnitude 6.1
Date-Time
* Tuesday, February 15, 2011 at 13:33:53 UTC
* Tuesday, February 15, 2011 at 09:33:53 PM at epicenter
Location 2.513°S, 121.485°E
Depth 14.7 km (9.1 miles)
Region SULAWESI, INDONESIA
Distances 155 km (95 miles) ENE of Palopo, Sulawesi, Indonesia
200 km (125 miles) NW of Kendari, Sulawesi, Indonesia
1500 km (940 miles) NW of DARWIN, Northern Territory, Australia
1680 km (1040 miles) ENE of JAKARTA, Java, Indonesia
Location Uncertainty horizontal +/- 6 km (3.7 miles); depth +/- 8.7 km (5.4 miles)
Parameters NST=217, Nph=217, Dmin=216.6 km, Rmss=1.35 sec, Gp= 29°,
M-type=teleseismic moment magnitude (Mw), Version=B
Source * USGS NEIC (WDCS-D)
Event ID usb0001eez

reply to post by Shenon


The 7 aftershocks that you are looking at include ones that are under Mag 2.0, but it is my belief that this is not the case with the EMSC data and thus you would be seeing more using the German data than the EMSC data if you get my drift.

As for comparing two events it is not always possible. For a start each will be in a different location and the circumstances of each will be different. In addition you would need to go back three decades at least to get a proper understanding of the 'norm' for this area, and going back 100 would be good!

Seriously I would not be worrying about it and put that Wikipedia article out of your head. The traces on the Freiburg site do not show any HT so there is not likely to be an imminent eruption.

At 12,900 years this volcano has not erupted in the Holocene and it is shall we say 'extremely unusual' for one with no eruptive history in the Holocene to become active again. Not impossible but not likely.

Three earthquakes in Arkansas today. This one here is interesting because if you look on the map you'll see a drill site with lots of trucks within a couple of klicks.

maps.google.com...(M2.2+-+ARKANSAS+-+2011+February+15++12%3A25%3A22+UTC)&ll=35.2523,-92.3525&spn=2,2&f=d&t=h&hl=e

There must be a volcano under Arkansas. Snicker, snicker.

Originally posted by heineken
Japan next??

makes me think..2 more in Bonin Islands..

DATE LAT LON MAG DEPTH km REGION
12-FEB-2011 00:05:39 27.35 143.09 4.9 10.0 BONIN ISLANDS REGION
11-FEB-2011 23:59:17 27.27 143.08 5.1 12.9 BONIN ISLANDS REGION


quiet close to Japan and the 5.4 they had on the 10th might just be indicating that plate is been active quiet a bit

guess i deserve some credit on this one....
lots of activity in Japan Area today

[atsimg]http://files.abovetopsecret.com/images/member/2733b4bb2f7f.jpg[/atsimg]