Earthquakes

[Drip Curl Magic]

OK, here's the fresh data. This was NOT under St. Helens this time; it was just outside Vancouver city limits and SW of St. Helens. Wow! Thisa one was a corker!

3.3 Thursday, August 3, 2006 at 1:39:18 AM = local time at epicenter

http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/uw08030839.php

Cedar Flats Seismogram trace; 40 miles from me:

http://www.pnsn.org/WEBICORDER/VOLC/CDF_SHZ_UW.2006080300.html

: :cup:

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That's interesting.... we actually had 2 very good sized quakes here in northern california within the past 24 hours.

 

One was a 3.3 and the other was a 4.4

 

http://pasadena.wr.usgs.gov/shake/ca/

[Turtle]

We have quite the shock/aftershock series building here! Quake depth just over 7 miles. I won't get much sleep tonight....er...this morning. It's almost 4 am here.

Map:

http://earthquake.usgs.gov/eqcenter/recenteqsus/Maps/US2/45.47.-124.-122.php

That's interesting.... we actually had 2 very good sized quakes here in northern california within the past 24 hours.

 

Whole lotta shaking goin' on!:hihi: I'm finally up & the Noon news is all aflutter with the quakes. They upgraded the main shock from 3.3 to 3.8, and while engineers are checking bridges & structures for damage, none is reported so far. This was less than 15 miles from me and if I'm not mistaken, much closer to friend Racoon.

A local USGS geologist (more of them within 50 miles of me than you can shake a stick at) on the news smilingly commented the old "this is normal" line and added that these quakes aren't related to St. Helens. Of course not! How could they be? They were at least 30 miles away!:hihi: :hihi: I guess if you carefully define "related" it's true enough.:hihi:

Anyway, things have settled back to the "normal" background shaking from the volcano St. Helens. Now I need some coffee...a lot of coffee.:hihi: :cup: :cup: :cup: :cup: :cup: :cup: :cup:

[Turtle]

12:41 AM Just felt big quakes; still shaking. Instrument reading as soon as they arrive>:hyper:

Edit seismogram addendums:

The only blips I found in my region for 12:40 AM were at Glacier Peak by Seattle & way down at Sisters in Oregon. Nothing from the nearby Cedar Flats station.

http://www.pnsn.org/WEBICORDER/VOLC/GPW_SHZ_UW.2006081400.html

http://www.pnsn.org/WEBICORDER/VOLC/HUO_SHZ_UO.2006081400.html

http://www.pnsn.org/WEBICORDER/VOLC/CDF_SHZ_UW.2006081400.html

[Turtle]

There is never a day goes by for me without quakes shakin' my gizzard, but today we have a couple of very unusual quakes in the US, both in location and magnitude; A 3.5 in Maine and a 3.5 in South Carolina! :wave:

http://earthquake.usgs.gov/eqcenter/recenteqsus/

 

If I had to hazard a guess I'd guess fewer than 2% of those people have any form of disaster preparedness kits at home. Dear me, good grief, & oh bother.:D

[Turtle]

...a couple of very unusual quakes in the US, both in location and magnitude; A 3.5 in Maine and a 3.5 in South Carolina! :)

http://earthquake.usgs.gov/eqcenter/recenteqsus/

 

I was just going back to the USGS site to get the details of these two quakes I mentioned, and in keeping with the original theme of this thread, no one predicted these. :)

Well. not only did I get the details (coming below), but there was just a 3.6 this very hour again in South Carolina!!! It's the last on the list here:

 

http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/ussyav.php

Magnitude 3.5 (Minor)

Date-Time Friday, September 22, 2006 at 10:39:23 (UTC)

= Coordinated Universal Time

Friday, September 22, 2006 at 6:39:23 AM

= local time at epicenter Time of Earthquake in other Time Zones

 

Location 44.370°N, 68.220°W

Depth 5 km (3.1 miles) set by location program

Region MAINE

Distances 2 km (1 miles) SSW (205°) from Bar Harbor, ME

30 km (19 miles) SE (138°) from Ellsworth, ME

51 km (32 miles) ESE (117°) from Bucksport, ME

66 km (41 miles) SE (138°) from Bangor, ME

302 km (188 miles) ENE (58°) from Manchester, NH

325 km (202 miles) NE (45°) from Boston, MA

 

http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/semc0922a.php

Magnitude 3.5 (Minor)

Date-Time Friday, September 22, 2006 at 11:22:01 (UTC)

= Coordinated Universal Time

Friday, September 22, 2006 at 7:22:01 AM

= local time at epicenter

 

Location 34.699°N, 79.745°W

Depth 5.1 km (3.2 miles) (poorly constrained)

Region SOUTH CAROLINA

Distances 10 km (6 miles) NNW (328°) from Bennettsville, SC

14 km (8 miles) E (89°) from Cheraw, SC

14 km (9 miles) WSW (242°) from Gibson, NC

57 km (36 miles) N (3°) from Florence, SC

86 km (53 miles) WSW (242°) from Fayetteville, NC

441 km (274 miles) ENE (75°) from Atlanta, GA

 

http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/ustbaj.php

Earthquake Details

Magnitude 3.6 (Minor)

Date-Time Monday, September 25, 2006 at 05:44:21 (UTC)

= Coordinated Universal Time

Monday, September 25, 2006 at 1:44:21 AM

= local time at epicenter Time of Earthquake in other Time Zones

 

Location 34.451°N, 79.626°W

Depth 5 km (3.1 miles) set by location program

Region SOUTH CAROLINA

Distances 7 km (4 miles) SSE (159°) from Blenheim, SC

16 km (10 miles) SSW (208°) from Clio, SC

20 km (12 miles) SSE (164°) from Bennettsville, SC

33 km (20 miles) NNE (25°) from Florence, SC

94 km (58 miles) SW (224°) from Fayetteville, NC

446 km (277 miles) E (79°) from Atlanta, GA

 

:cocktail: :cup:

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[Chacmool]

Very interesting, Turtle, if somewhat unsettling! It really is a big concern that so few people seem to be prepared for a large quake. :)

[Turtle]

Very interesting, Turtle, if somewhat unsettling! It really is a big concern that so few people seem to be prepared for a large quake. :)

 

So it is...both interesting and concerning. USGS is rather between the hammer and the anvil, and while they are hampered in giving any predictions as of yet they have done an excellent job providing preparedness information to the public.

The number of quakes worldwide is currently on the low end in regard to the records I have kept over the past 4 months and oddly many of the larger quakes are occuring in "unusual" places. This past Saturday we had a 4.5 quake start a shock/aftershock sequence just 7 miles from the summit of Mt. Rainier. True to form, the geologists played it down to the media saying it doesn't appear to be a volcanic associated quake. This is technically true, but only inasmuch as no volcanic erruption or activity has followed. (hammer/anvil!?) So, it remains an interesting set of events which may add to the knowledge necessary in the future to predict earthquakes.

Here's the data:

 

Magnitude 4.5 (Light)

Date-Time Sunday, October 8, 2006 at 02:48:26 (UTC)

= Coordinated Universal Time

Saturday, October 7, 2006 at 7:48:26 PM

= local time at epicenter

Location 46.850°N, 121.600°W

Depth 3.8 km (2.4 miles) set by location program

Region WASHINGTON

 

http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/uw10080248.php

http://earthquake.usgs.gov/eqcenter/recenteqsus/

 

:) :hyper: :cup:

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[Turtle]

Well nows...more quakes today than in my 5 months of recording the figure from USGS presented on their daily US maps; a count of 811.

http://earthquake.usgs.gov/eqcenter/recenteqsus/

 

In addition we have a new finding that may offer some little predictive value and it is a bit surprising. It seems that rain is enough to trigger quakes hovering on the edge of indecision! :shrug:

 

Sebastian Hainzl of the University of Potsdam and his colleagues say that the rise in water pressure within porous rocks as rain soaks into the ground can start quakes on hair-trigger faults. "Tiny changes can have big effects," says Hainzl's coworker Toni Kraft of Ludwig-Maximilians University in Munich.

 

http://www.nature.com/news/2006/061016/full/061016-15.html

[Jim Colyer]

Has anyone here experienced an earthquake?

[Jay-qu]

yeah, but nothing serious..

 

There was an earthquake here last week, didnt make it very high on the richer scale, I didnt even notice it.

[Turtle]

Has anyone here experienced an earthquake?

Does anyone here bother to read the entire thread before posting to it? :D

You got me all shook up Jim.:D

[TheBigDog]

Does anyone here bother to read the entire thread before posting to it? :D

You got me all shook up Jim.:D

Could you help me find a thread about earthquakes?

 

Bill

[Buffy]

Has anyone here experienced an earthquake?

I-i-i-i--i-nnnn C-cc-ccc-all-ii-i-iii--i-fo-o-rn---ia we have em every so often, and you're close enought to New Madrid to have something to worry about (although Memphis will get it worse!).

 

Graduate of "big ones:" 1989, 1992, 1994

 

More fun than a wooden rollercoaster at Six Flags!

 

All shook up, :shrug:

Buffy

[Turtle]

In addition we have a new finding that may offer some little predictive value and it is a bit surprising. It seems that rain is enough to trigger quakes hovering on the edge of indecision! ;)

 

http://www.nature.com/news/2006/061016/full/061016-15.html

 

This may have some connection to the recent quake just across the river from me in Portland, given the heavy rains we are experiencing. Geologists are at a loss to explain why the quake was felt over such a wide geographic area. In checking the USGS site I see we had another micro-quake in the same vicinity this morning.

 

While I have measured nearly 6 inches of rain at my location in Vancouver, nearly twice that amount has fallen on St. Helens and I won't be at all surprised if the quake activity increases.

BRB with some links. :pirate:

 

Here we go...

The first quake:

Magnitude 2.6 (Micro)

Date-Time Monday, November 6, 2006 at 05:34:35 (UTC)

= Coordinated Universal Time

Sunday, November 5, 2006 at 9:34:35 PM

= local time at epicenter

 

Location 45.516°N, 122.648°W

Depth 15.7 km (9.8 miles) set by location program

Region PORTLAND URBAN AREA, OREGON

http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/uw11060534.php

 

This morning's quake:

Magnitude 1.7 (Micro)

Date-Time Tuesday, November 7, 2006 at 09:56:19 (UTC)

= Coordinated Universal Time

Tuesday, November 7, 2006 at 1:56:19 AM

= local time at epicenter

 

Location 45.518°N, 122.681°W

Depth 17.4 km (10.8 miles) set by location program

Region PORTLAND URBAN AREA, OREGON

http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/uw11070956.php

 

Map of where quake was reported felt:

http://pasadena.wr.usgs.gov/shake/pnw/STORE/X11060534/ciim_display.html

[Turtle]

While I have measured nearly 6 inches of rain at my location in Vancouver, nearly twice that amount has fallen on St. Helens and I won't be at all surprised if the quake activity increases....

 

The rain has abated somewhat, but another system is moving in. Forecasters expect less intensity, tending to showers rather than heavy rain.

 

I have come with some earthquake related links, inasmuch as I anticipate quake activity. The first two are for the same seismograph station, the later being the current record. The third link is a map showing the station's position in relation to Mt. St Helens; it is marked with a cross and the acronym JUN.

 

I bring this one forward because at the same location we recorded 41.1 inches of rain since Thursday! :hihi: The dynamic seismic activity apparent on the seismogram trace is the effect of the heavy falling rain and it's accumulating weight, as well as slides. Amazing!!!

 

 

http://www.pnsn.org/WEBICORDER/VOLC/JUN_SHZ_UW.2006110712.html

http://www.pnsn.org/WEBICORDER/VOLC/JUN_SHZ_UW.2006110800.html

 

http://www.pnsn.org/WEBICORDER/webimaps.html

[Buffy]

Hey Turtle,

 

Was that the New Madrid or Claire McCaskill?

 

Earthshaking,

Buffy

[Turtle]

Hey Turtle,

 

Was that the New Madrid or Claire McCaskill?

 

Earthshaking,

Buffy

 

Checking readouts as we speak...er, type...checking readouts as we type; that's the ticket. In any case, McCaskill or Madrid, she's a deep one. :shrug: