Quake Watch 2011

reply to post by muzzy


It does happen there.

Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
2011-10-06 00:39:33, 57.884, -32.562, 5.6, 10.2, Reykjanes Ridge
2011-10-06 00:03:04, 57.929, -32.363, 5.0, 10.0, Reykjanes Ridge
2011-10-05 23:52:20, 57.882, -32.563, 5.4, 10.1, Reykjanes Ridge
2011-10-05 23:02:12, 57.972, -32.550, 4.8, 10.0, Reykjanes Ridge
2011-09-05 08:22:46, 59.004, -30.760, 4.6, 10.0, Reykjanes Ridge
2011-09-05 07:19:03, 59.040, -30.706, 4.7, 11.0, Reykjanes Ridge
2011-09-05 07:15:51, 59.018, -30.516, 4.6, 10.0, Reykjanes Ridge
2011-09-05 05:44:07, 59.046, -30.701, 4.6, 10.0, Reykjanes Ridge
2011-09-05 05:05:37, 59.143, -30.815, 4.9, 10.2, Reykjanes Ridge
2011-03-24 05:23:25, 59.438, -30.312, 4.7, 8.7, Reykjanes Ridge
2011-03-24 05:17:22, 59.508, -30.364, 4.7, 10.0, Reykjanes Ridge
2010-12-08 02:46:58, 57.269, -33.009, 4.8, 10.1, Reykjanes Ridge
2010-12-07 20:41:20, 57.515, -33.330, 4.7, 10.0, Reykjanes Ridge
2010-10-22 15:38:14, 55.400, -35.194, 4.7, 17.2, Reykjanes Ridge
2010-09-27 00:28:13, 57.720, -32.748, 5.0, 10.2, Reykjanes Ridge
2010-09-27 00:16:13, 57.729, -32.713, 5.4, 10.3, Reykjanes Ridge
2010-09-27 00:08:45, 57.674, -32.775, 5.5, 10.0, Reykjanes Ridge
2010-09-09 10:31:05, 59.567, -30.186, 5.2, 10.0, Reykjanes Ridge
2010-08-30 12:57:45, 58.187, -32.179, 4.9, 10.0, Reykjanes Ridge
2010-08-19 06:57:30, 54.086, -35.119, 4.7, 10.0, Reykjanes Ridge
2009-12-27 17:09:11, 59.371, -30.228, 4.7, 10.0, Reykjanes Ridge
2009-12-19 04:16:40, 52.679, -33.008, 4.6, 10.0, Reykjanes Ridge
2009-11-22 02:38:38, 56.581, -34.343, 4.8, 10.0, Reykjanes Ridge
2009-11-15 13:58:06, 53.832, -35.070, 5.0, 10.0, Reykjanes Ridge
2009-11-15 13:52:34, 54.079, -35.463, 4.7, 10.0, Reykjanes Ridge
2009-11-15 13:10:58, 53.873, -35.193, 5.2, 10.0, Reykjanes Ridge
2009-11-15 12:59:58, 53.878, -35.115, 4.9, 10.0, Reykjanes Ridge

This seems to be the time of year for it. Is this hurricane related I wonder?

That is easier to pick out on this



Looks to me as if this is always this time of year. I have the satellite pictures for the Atlantic going back and also the surface pressure maps for about 20 years. I must see if I can match the times.

reply to post by westcoast


This may interest you. I just found it

Similarly large, widespread, and abundant prehistoric sand blows were produced over the same area during ground shaking from previous clusters of large earthquakes around A.D. 1450

Source

This also covers that act that the geologists are not convinced about the GPS either.

Now go back to my post on the NMSZ

To get down to 0.0375 PJ would mean the previous was 475 years ago. Sounds quite reasonable actually. The magyk figure is 17.9 PJ as the combined energy of the 4 and it would be the year 2,323 before it gets back up to that level again.

That 475 is year ago - from 1811 - which is 1336. So somewhere in between the two we have 1450 which I did not know. Looks as if my calcs may be on the right track. With this new information I can refine them a bit more. I will do that this weekend.

web.ics.purdue.edu...

reply to post by PuterMan


yes it does look seasonal doesn't it.
I switched on the weather (clouds) on GE and the storm is currently off Newfoundland by the look of it.
both GE and isobar map show a high over the quake area though, the opposite of what we have seen in the S Pacific with the Cyclone/Quake matches.
everything is opposite N v S anyway

Seven quakes in less than 24 hours. We have a new swarm in Arkansas.

Sorry. Mama Jenn, I tried thinking about your question and the needle went to overload. I wanted also to talk about quartz. Then I wanted to get into the hurricane debate with Puterman. Ophelia just passed Newfoundland and is just a depression at the moment. I think it's just south of the Atlantic quakes.

I am trying to calm myself down. I know something's brewing in Quitman. I feel like starting a new thread just give people another shake. But I highly doubt I will. I now have to wonder if I'll ever pull my attention away from the place. I've gotten to know the people who live there. This newest activity is a sign of the ongoing trend.

It's just that I can't shake the feeling that there will be a large quake soon near Quitman.
Susan posted a story about another fish kill on the Arkansas thread.
Simply- I know one thing- it ain't over.


Had to edit, yeah muzzy, damn, that cycle in the Atlantic is outrageous. It can't be a fluke.

reply to post by Robin Marks


Puterman, here's some math for you. Scott Ausbrook changed the magnitude of the maximum when he realized the fault was twice as long as he first thought. I think, he thought, that the maximum was 4.5-50M. His revised maximum went to 5.5-6.0M.

Let's say the fault extends past the Guy/Greenbrier trend and stops somewhere near Quitman. Let's say it's a third longer than his revised estimate.

What would be your maximum magnitude given this hypothetical scenario?

Putterman....
If you are interrested in DEMETER, then pls have a look at some new documents released at DEMETER - Publications regarding electric field anomalies related to earthquakes including documents regarding possible observations of ELF waves injected with the HAARP HF transmitter and more.

reply to post by Robin Marks


Oh its ok....it (crystal/magnetite) is a lot to take in especially when your mind is elsewhere. My boyfriends mom is coming into town on Friday and I am in cleaning mode...BIG TIME. Base boards....ya know....every thang!

Tomorrow I will be able to read and research the new swarm...I am with you. Intuition sometimes is dead on. Who is to say the recent activity is aligning itself for another big one in the new madrid....just never know. In the past....it did hit Arkansas before the town of New Madrid. Time tells all don't it.

didn't pay this much attention this morming when I seen the 4.4 on the Recent Quakes list at Geonet, hohum a 4,4

GNS had more time to have a closer look at it?
cart before the horse?.
The 2nd one is featured on the Recent Quakes list, but the 1st one is loaded in the downloaded data with a later Ref No, but was before time wise --------------- by 4 seconds

MagnitudeML, Reference, Latitude, Longitude, UTC Date Time, Depth, Location, Felt
5.013, 3590130, -40.28273, 176.66064, 2011/10/5 13:42:48, 143, E of Porangahau, No
4.417, 3590129, -40.30076, 176.63374, 2011/10/5 13:42:52, 47, E of Porangahau, Yes

The shaking map shows MM8 intensity at Dannevirke, which is more likely the Mag 5
Mangatainoka River (MRZ) is the nearest station, these two Porangahau quakes are at 18:27 hrs ago, the higher up one is the 5.7 near Tauranga (usgs' 4.6 I posted earlier today) comparing the two moderate (red traces) events shows USGS got it wrong n the earlier quake (based on distance from Mangatainoka and the fact 4;s don't go that thick on red cropped traces on GNS graphs especially at that distance)


so does 5ML+4.4ML match a 5.7 energy wise?

Nope, not by along shot
5.7ML = 5350.672TNT
5.0ML = 476.879TNT + 4.4ML= 60.036TNT = 536.915TNT Total

Quartz Crystals...Found It!

"The Role of Quartz in Plate Tectonics
Researchers discover a relationship between quartz and crustal deformation
Republished from a March, 2011 press release by Mary-Ann Muffoletto of Utah State University.



The Wilson Tectonic Cycle

More than 40 years ago, pioneering tectonic geophysicist J. Tuzo Wilson published an article in the journal Nature describing how, over Earth’s long history, ocean basins opened and closed along North America’s eastern seaboard. His observations, dubbed “The Wilson Tectonic Cycle,” suggested this process had occurred many times; most recently causing giant Pangaea to split into today’s seven continents.

Wilson’s ideas were central to the so-called Plate Tectonic Revolution, the foundation for contemporary theories of processes underlying mountain-building and earthquakes. Since his 1967 article, additional studies have confirmed that large-scale deformation of continents repeatedly occurs in some regions but not others, though the reasons why remain poorly understood. New findings by Utah State University geophysicist Tony Lowry and colleague Marta Pérez-Gussinyé of Royal Holloway, University of London shed surprising light on these restless rock cycles.


The Role of Quartz

“It all begins with quartz,” says Lowry, who published results of the team’s recent study in the March 17, 2011 issue of Nature. In “The Role of Crustal Quartz in Controlling Cordilleran Deformation,” the scientists describe a new approach to measuring properties of the deep crust that reveal quartz’s key role in initiating the churning chain of events that cause the Earth’s surface to crack, wrinkle, fold and stretch into mountains, plains and valleys.


How Rocks Flow in Response to Stress




“Earthquakes, mountain-building and other expressions of continental tectonics depend fundamentally on how rocks flow in response to stress,” says Lowry, assistant professor in USU’s Department of Geology and 2010 recipient of a National Science Foundation CAREER Award. “We know that all tectonics are a response to the effects of gravity, but we know less about rock flow properties and how they change from one location to another.”

Wilson’s theories provide an important clue, he says, as scientists have long observed that mountain belts and rift zones have formed again and again at the same locations over long periods of time.

But, why?

“Over the last few decades, we’ve learned that high temperatures, water and abundant quartz are all critical factors in making rocks flow more easily,” Lowry says. “But until now, we haven’t had the tools to measure these factors and answer long-standing questions.”

The Earthscope Transportable Array

Since 2002, the NSF-funded Earthscope Transportable Array of seismic stations across the western United States has provided valuable remote sensing data about the continental crust’s rock properties.

“We’ve combined the Earthscope data with other geophysical measurements of gravity and surface heat flow in an entirely new way that allows us to separate out the effects of temperature, water and quartz in the crust,” Lowry says.

The Velocity of Sound and Shear Waves
The Earthscope measurements have enabled the team to estimate the thickness, along with the seismic velocity ratio, of continental crust in the American West. Seismic velocity describes how quickly sound waves and shear waves travel through rock, he says, offering clues to its temperature and composition.

“By themselves, seismic velocities are sensitive to both temperature and rock type,” Lowry says. “But if the velocities are combined as a ratio, the temperature dependence drops out. We found that the velocity ratio was especially sensitive to quartz abundance.”


Weak Quartz-Rich Crust

But even after separating out the effects of temperature, the scientists found that a low seismic velocity ratio, indicating weak, quartz-rich crust, systematically occurred in the same place as high lower-crustal temperatures modeled independently from surface heat flow.

“That was a surprise,” he says. “We think this indicates a feedback cycle, where quartz starts the ball rolling.”

If temperature and water are the same, Lowry says, rock flow will focus where the quartz is located because that’s the only weak link. Once the flow starts, the movement of rock carries heat with it and that efficient movement of heat raises temperatures, resulting in weakening of crust.

“On top of that, rock, when it warms up, is forced to release water that’s otherwise chemically bound in crystals,” he says.

Water further weakens the crust, which increasingly focuses the deformation in a specific area.

From
geology.com...

A really interesting site
Rainbows
Jane

Magnitude 6.2
Date-Time

Thursday, October 06, 2011 at 11:12:29 UTC
Thursday, October 06, 2011 at 08:12:29 AM at epicenter

Location 24.181°S, 64.250°W
Depth 9.5 km (5.9 miles)
Region JUJUY, ARGENTINA
Distances

139 km (87 miles) ENE (62°) from Salta, Argentina
157 km (98 miles) E (91°) from San Salvador de Jujuy, Argentina
297 km (185 miles) S (170°) from Tarija, Bolivia
675 km (420 miles) W (279°) from ASUNCION, Paraguay

Location Uncertainty horizontal +/- 15.5 km (9.6 miles); depth +/- 4 km (2.5 miles)
Parameters NST=355, Nph=355, Dmin=507.6 km, Rmss=0.9 sec, Gp= 32°,
M-type=regional moment magnitude (Mw), Version=6
Source

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

Event ID usc00065dr

earthquake.usgs.gov...

We are back to normal!

reply to post by PuterMan

Darn, Puterman, you're too quick! I had that same quake copied and ready to paste!

First mag 6 quake since 22/9... A fair "break", that. Not the longest interval with no such quakes, for sure, but still a fair period of relative "quiet" in such terms. I recall there was a 16 or 17 day break sometime earlier year but would have to check.

Mike

reply to post by angelchemuel


I shall reserve judgement. Just reading the text you put up it sounds much more like Electric Universe than a weakness.

I will examine it later but I think this is mainstream geology not actually understanding what is going on in the world because .... well because it is mainstream geology!

reply to post by JustMike




I changed my own earthquake program to give an audible alarm when a 6 comes up in the download. I have missed them before. I have been waiting for days to test it out!!!

I am just finishing a total revamp of the seismograms section and will be issuing the program very soon.

Looking at the pager link there may be some damage there




ETA: quakewatch.wordpress.com...

earthquake-report.com...

Note under the map...."not reviewed by HUMAN"!!!!!!!!

Rainbows
Jane

reply to post by PuterMan

An audible tone? Good idea, that!

On to the more serious aspects of this quake, having looked at the quake's location makes me think that there could well be some damage. It occurred very close to the city of San Salvador de Jujuy, that has a population of around 250,000 inhabitants. (Refer wiki article about the city HERE )

I am currently watching a page for the city called Diario Jujuy (Jujuy Diary), because any reports of local damage are likely to get posted there fairly quickly. The page is in Spanish but I'm posting it as we have plenty of members who can read the language, and also it's easy enough to follow even with an online translation.

Nothing has yet been posted there about the quake.

Just a note: members who don't speak Spanish but who want to search any Spanish-language sources for quakes should include "terremoto" (earthquake) as a key word.

Mike

reply to post by angelchemuel

Thank you for that link!

Good news (maybe):

Update : 66 people will have experienced a VII MMI (very strong shaking)
7,000 a VI MMI strong shaking and 46,000 people a moderate shaking.

Update : The population density is very favorable as only 819 people are living in a radius of 20 km. 32,000 people are living in a radius of 50 km and 426,000 in a radius of 100 km.

Update : the epicenter is located in a forestry area close to the villages San Rafael and La Ronda

From the Source as provided by angelchemuel.

reply to post by angelchemuel


Would would cause an EQ when there is Hurricane activity? Is it this possibly?

“Over the last few decades, we’ve learned that high temperatures, water and abundant quartz are all critical factors in making rocks flow more easily,” Lowry says. “But until now, we haven’t had the tools to measure these factors and answer long-standing questions.”

reply to post by PuterMan


2H and no Aftershocks?

reply to post by muzzy


I can assure you that Ophelia is not off Newfoundland - she is knocking on my front door. I was going to video the driving rain but my memory card is full. I only got a few seconds in before it stopped.

I don't know what is off Newfoundland but it is not Ophelia. She started around 8pm last night and is still going strong but getting a bit weaker now. We are on the edge not like Katia who was closer.

Cool, showery and very windy, with strong to gale force west to northwest winds, gusting to between 90 and 115 km/h, strongest in exposed north-western parts. The showers will be heavy and possibly thundery. Highest temperatures of 10 to 12 degrees, but it will feel colder.

www.met.ie...

"Strong to gale force west to northwest winds will gust to between 110 and 120 km/h on Thursday."

www.meteoalarm.eu...


ETA: Here you are - confirmation that is Ophelia

Alaska is continuing the dance:

Magnitude
3.0
Date-Time
Thursday, October 06, 2011 at 13:51:07 UTC
Thursday, October 06, 2011 at 05:51:07 AM at epicenter
Location
61.399°N, 146.764°W
Depth
16.6 km (10.3 miles)
Region
SOUTHERN ALASKA
Distances
39 km (24 miles) NW (322°) from Valdez, AK
59 km (37 miles) N (356°) from Tatitlek, AK
64 km (40 miles) S (177°) from Nelchina, AK
162 km (100 miles) E (80°) from Anchorage, AK
Location Uncertainty
horizontal +/- 0.3 km (0.2 miles); depth +/- 0.2 km (0.1 miles)
Parameters
Nph= 59, Dmin=0 km, Rmss=0.96 sec, Gp= 0,
M-type=local magnitude (ML), Version=1
Source
Alaska Earthquake Information Center
Geophysical Institute, University of Alaska Fairbanks
Event ID
ak10329358

Be Well.