Quake Watch 2011

Alaska is showing 3 sized EQ, all at the same time, but with different depths

Thursday July 28 2011, 14:00:00 UTC 20 minutes ago Central Alaska 5.6 65.5 Detail
Thursday July 28 2011, 14:00:00 UTC 20 minutes ago Central Alaska 5.3 89.7 Detail
Thursday July 28 2011, 13:59:59 UTC 20 minutes ago Central Alaska 5.4 72.0

quakes.globalincidentmap.com...

reply to post by summer5


USGS revised depth and magnitude 3 times now.

same quake, with sequence of revisions as the website updated from USGS feed.

---

first from West Coast and Alaska Tsunami Warning Center/NOAA/NWS wcatwc.arh.noaa.gov

reply to post by angelchemuel


Not sure about that. Those are not the same as the quakes on Hierro

El Hierro seismogram for 27th

IU.MACI which is on Tenerife does not seem to ne showing much on the HHZ channel MACI.IU..HHZ.2011.208 so it is difficult to say what those are but (and I cannot confirm this without listening) they look very similar to the signature one sees when there is solar activity. This does seem to have a habit of affecting certain instruments and not others and may be to do with the transmission links in use.

I may be completely off the mark there, but the spectrum from that instrument here suggests to me that this is the case.

ETA: If you click back through the pages - I went back to the start of July - it is not an uncommon signal on that instrument.

reply to post by PuterMan


Thanks PuterMan. Worth keeping an eye on though?

Rainbows
jane

reply to post by angelchemuel


Indeed.

You can see the start of the swarm at El Hierro on this one

My thanks to you for the link. It was one that was not in my list. I have the earthquake side but had not discovered that the seismograms came under the volcano section.

Now included on the seisomgrams page.




By the way i found this PDF on their site

url=http://www.ign.es/ign/resources/sismologia/NOTA_PRENSA_COMITE_CIENTIFICO.pdf]Report of Scientific Committee (Spanish)(PDF)

[atsimg]http://files.abovetopsecret.com/images/member/fed05541704b.png[/atsimg]

A new study just released! Interesting indeed.

The Olympic Peninsula in Washington State, USA, and British Columbia, Canada, could be among the hardest hit locations in the event of a future megathrust earthquake along the Pacific coast.
A new study led by Simon Fraser University earth scientist Andy Calvert and published in Nature Geoscience this week indicates the depth of the fault between the two tectonic plates forming the Earth’s surface in the Pacific Northwest is seven kilometres deeper than previously proposed.

Calvert speculates it may mean part of the fault’s locked zone — where a megathrust earthquake can occur — could be beneath the Olympic Peninsula.

This I find very interesting

The section runs north-south from Victoria on Vancouver Island to southern Washington state. Scientists call it a transient slip zone because the fault between two plates slips gradually every 14 months or so. This gradual slip takes place over a two-week period and triggers tremors that are so small people don’t notice them.

What happenes every 14 months for only two weeks that trigger these tremors? Is it a 2 month lag time for full rotation of the earth around the sun?

Full Article


P.S. - I am getting the hebe jebe's from what is happening in the Canary Islands. Puterman, I hope you can find an instrument where you can get a listen!!!! I hope that in a short while They will give us more instruments as it appears they are very concerned as well. Tremor plots would be welcome.

reply to post by Anmarie96


Thank you Anmarie!!!! (I'm stealing this article for my other thread, BTW... )

What is interesting about those deep tremors, is that for the past year that I have been watching them, they occur almost daily. There is a much larger cluster every 14 months or so, but the tremors are pretty much always going. Yesterday for example, there were around 130 of them smack-dab on the Olympic Peninsula. There was also a 42 km deep 3.7 quake there earlier this week...

I have always been aware and obviously concerned about a mega quake happening near me and realized that the zone was most likely under the peninsula vs off the coast..BUT. Until this last quake, I didn't realize just how close it was. That 3.7 was 69 miles from my house. If that had been the mega thrust...well.


ETA: I had a theory out there somewhere at one time about the timing of these tremors. I speculated whether it could have anything to do with the suspected magma chamber sitting under a large portion of the state. My thought, was that depending on the vicousness (sp?) of the magma...what if the tremors were associated with the ebb and flow? Don't know if that makes any sense, but if there is a huge sea of semi-solid magma under us, I think it would make sense that there may be some very slow, wave-like movement associated with it. Just a random thought.

More clues about the Big One

www.sfu.ca/pamr/media-releases/2011/more-clues-about-the-big-one.html


Sedimentary underplating at the Cascadia mantle-wedge corner revealed by seismic imaging

www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1195.html

Uploaded the "restricted" Advance online publication fulltext :

jjjtir.files.wordpress.com/2011/07/ngeo1195.pdf

The Supplementary Information pdf is free without walls

www.nature.com/ngeo/journal/vaop/ncurrent/extref/ngeo1195-s1.pdf

Acknowledgements

We thank G. Abers for providing the geometry of the CAFE teleseismic profile and H. Kao for providing some tremor locations in Canada. This project was funded by the Natural Sciences and Engineering Research Council of Canada and US Geological Survey through grant 06HQGR0029. The acquisition of the various field data was supported by the US Geological Survey, the Geological Survey of Canada, the National Science Foundation, and several US and Canadian universities. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Company, for the U.S. Department of Energy’s National Nuclear Security Administration, under contract DE-AC04-94AL85000.

Originally posted by westcoast
Man... I got some crazy P waves from what has to be this quake (5.9 atlantic ridge). I don't get it. In all my time watching GEE I've never seen the P waves this big from something under a 6 mag, and this has to be the second round? (2nd wave)...because I just came back to my computer and saw it and immediately pulled up USGS expecting a big one somewhere.

Same thing happened with the quake in the gulf, also a 5.9.

*scratching my head.....*

its a shock wave,,,,,,,,,,,,"I got some crazy P waves"

www.youtube.com.../u

2:03 and 2:37

Thursday July 28 2011, 20:34:45 UTC 3 minutes ago Puerto Rico region 4.3 23.0 Detail
Thursday July 28 2011, 20:04:33 UTC 34 minutes ago Southern Alaska 1.5 40.2 Detail
Thursday July 28 2011, 20:02:06 UTC 36 minutes ago Kenai Peninsula, Alaska 1.8 19.3 Detail
Thursday July 28 2011, 19:50:19 UTC 48 minutes ago offshore Maule, Chile 5.6 26.1 Detail

I know the information to the questions I have is somewhere in the 100's of pages but could someone please help?

1. Appx. how many earthquakes happen every day?
2. Are the earthquakes we are seeing getting larger?

I am new to this topic and find the information overwhelming but informative.

reply to post by AuntB


I don't hang out around this thread much, but my understanding is a WHOLE LOT of earthquakes happen each day. 100's to 1000's

As for intensity, from my understanding is, for the most part, nothing that new. But I'm sure if I'm wrong someone will come by and correct me.

MAG 6.6 FIJI area

Preliminary Earthquake Report:


2011/07/29 (date)


07:42:24 (UTC)


-23.637 179.805 (MAP)


528.0 kms (depth)

SOUTH OF THE FIJI ISLANDS

see:

earthquake.usgs.gov...

thanks usgs

seeya

reply to post by shaneR


and just for good measure...

MAG 5.2 Fiji,,,

2011/07/29

07:50:58 (utc)

-23.643 179.722 (map)

552.1 kms depth

SOUTH OF THE FIJI ISLANDS

earthquake.usgs.gov...

seeya

and three makes a set...

SOUTH OF THE FIJI ISLANDS


MAG 5.1

2011/07/29

08:19:10 (UTC)

-23.399 -179.886

538.5 kms depth

SOUTH OF THE FIJI ISLANDS



earthquake.usgs.gov...

seeya

Bigger quakes during past few days reduced. Nothing strange.
At the same time the solar activity increased; at present more than 40x B8.0 Plus flares between 27 to 29 July.

Thus the observation Putterman made before that increase solar activity often coresponds with reduced earthquakes.

Is it possible that Cosmic radiation (higher in high-energy particles) might be the culprit that causes heat/movement in Earth Core? With increased solar activity the solar radiation is strengthening the Heliopause/Heliosphere thus reducing (or at least stronger resistance to) incoming cosmic radiation.

PDF Package for Magnitude 6.7 South Of The Fiji Islands usc00055wy now available. (1.7 Mb download)

usc00055wy.zip

Web site images only (663 Kb download)
usc00055wy_images.zip

View web version of page here

reply to post by shaneR

MAP 5.1 2011/07/29 12:32:18 -23.728 -179.657 501.3 SOUTH OF THE FIJI ISLANDS
MAP 5.1 2011/07/29 08:19:10 -23.399 -179.886 538.5 SOUTH OF THE FIJI ISLANDS
MAP 5.2 2011/07/29 07:50:58 -23.643 179.722 552.1 SOUTH OF THE FIJI ISLANDS
MAP 6.7 2011/07/29 07:42:23 -23.651 179.822 521.7 SOUTH OF THE FIJI ISLANDS

earthquake.usgs.gov...

And another just to keep you amused.

reply to post by AuntB


As thenewguy1987 correctly stated - thousands a day and no, no real increase is observable over and above the normal cycles, if you look at proper data and stay away from scaremongering sites that twist things to they way they want them. As the saying goes there's lies, there's damned lies and then there's statistics.

Here is the rough guide to the number of quakes yearly

reply to post by Aromaz


I think you may find this thread a bit useful in regards to the Suns radiation and its effects here on Earth. .The Russians seem to think there will be even more loss of life as the Sun is active and does indeed cause EQ's and Volcanic activity......Of course USGS is not in the "know" as of yet.....maybe they will quickly get on board of what to me seems to be common sense. !!

www.abovetopsecret.com...&flagit=733975