Quake Watch 2011

reply to post by westcoast


First the North Atlantic 4.7 then a 2.6 in Northern California...

Maybe they picked up on it?? Or....

reply to post by MamaJ


Well...if I had just opened it up, I would have thought there must be some really bad interference from somehwere.....but I watched it start with a quake and get worse from there. I think it is tectonic....local.

reply to post by westcoast


I just noticed a 5.1 West Chile Rise was put in as well. It made it's way around I guess.

A couple of "nice wee shakes" in Christchurch, within c. 15 minutes of each other, at opposite ends of the city...biggest we've had in there here parts for a wee while...still got the adrenalin coursing damnit.

4.0 followed by a 4.7.

Geonet

ChCh quake live


...and here I was thinking it was the Bay of Plenty's turn!

3.7 San Simeon area of Central California. Sorry, can't cut/paste.
2.7 Mammoth Lakes, too.

2.9, 1.9, & 1.2 at San Simeon.
All within the last 40 minutes. Aftershocks?

reply to post by westcoast


Sorry not to reply last night. I had an early night instead of the normal 3am.

Good signature for the 2.7 just before 3am UTC MLAC.CI..BHZ.2011.243. I assume however your were looking at the 30th so this is the IRIS view of it: MLAC.CI..BHZ.2011.242. That mish mash at the bottom is the signal you were looking at. (Looks a bit windy there as well? Or microseisms)

I listened to the last 4 hours of the day and in amongst all the junk (interference almost certainly as it is completely gone on filtering all above 6Hz) there is jus one small earthquake. A cute little 'pop' @ 4000sps (100 x speed)



ETA: If you look at the Gakona magnetometer (link in my signature) you can see incoming that matches the times and ...........

Earth is inside a solar wind stream flowing from the indicated coronal hole. Credit: SDO/AIA.

Source

Magnitude 5.4
Date-Time

Wednesday, August 31, 2011 at 12:17:26 UTC
Wednesday, August 31, 2011 at 10:17:26 AM at epicenter

Location 43.554°N, 28.900°W
Depth 10 km (6.2 miles)
Region NORTHERN MID-ATLANTIC RIDGE
Distances

491 km (305 miles) NNE (22°) from Santa Cruz das Flores, Azores, Portugal
1602 km (996 miles) NW (323°) from Funchal, Madeira Islands, Portugal
1735 km (1078 miles) WNW (294°) from LISBON, Portugal

Location Uncertainty horizontal +/- 15.2 km (9.4 miles); depth +/- 4.1 km (2.5 miles)
Parameters NST=334, Nph=334, Dmin=539.9 km, Rmss=0.87 sec, Gp= 32°,
M-type=body wave magnitude (Mb), Version=6
Source

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

Event ID usc0005m6g

earthquake.usgs.gov...

Just above the Azores

There is danger for great earthquake around Mid-Atlantic ridge. Seriously there hasn't been strong earthquakes for a long time. Still there is potential for it, specially near Iberia and Canary islands. It would be devastating if 8.0+ magnitude earthquake would hit there. Maybe worst disaster mankind has ever faced.

Lets hope this was not pre-quake. Tsunami would destroy all great cities around West Europe and Eastern coast of US. But that quake is coming, no one knows when.

Thanks, Puterman. Your reply to WC helps me as well. Was watching Mammoth yesterday too. The winds come up blowing eastward across the Sierra fairly predictably in the late afternoon, some days stronger than others, so that's always a consideration. Used to live in Carson City and hope to return, so that area of NV/CA is definitely one of particular interest to me. Of course, Hawthorne and Long Valley are not far away. Here's a quick sample of historical quakes in western Nevada. Would suggest they're leaning toward overdue:

Earthquakes of Magnitude 6 and Larger
Date Magnitude1 Location
1852? 7.3 Western Nevada
Sept. 3, 1857 6.2 Western Nevada
March 15, 1860 7.0 Pyramid Lake area
May 29, 1868 6.0 Virginia Range
Dec. 26, 1869 6.7 Virginia Range
Dec. 27, 1869 6.1 southern Virginia Range
June 3, 1887 6.3 Carson Valley
Feb. 14, 1914 6.0 Verdi area
Apr. 24, 1914 6.4 northern Virginia Range
June 25, 1933 6.0 northern Singatze Range
Dec. 29, 1948 6.0 Verdi area
Sept. 12, 1966 6.0 Truckee
Sept. 12, 1994 6.0 Double Spring Flat

Don's Notes

Most recent over the past 45 minutes. Another wee-one in VA....why are the VA quakes so damn shallow??

Wednesday August 31 2011, 14:22:07 UTC 5 minutes ago Nevada 2.1 1.1 Detail
Wednesday August 31 2011, 14:16:45 UTC 11 minutes ago Central Alaska 1.2 0.0 Detail
Wednesday August 31 2011, 14:08:32 UTC 19 minutes ago Central California 1.5 6.0 Detail
Wednesday August 31 2011, 14:01:50 UTC 26 minutes ago Southern Alaska 1.7 28.2 Detail
Wednesday August 31 2011, 14:01:06 UTC 26 minutes ago Nevada 1.3 6.4 Detail
Wednesday August 31 2011, 13:48:53 UTC 39 minutes ago Central Alaska 1.1 21.2 Detail
Wednesday August 31 2011, 13:44:10 UTC 43 minutes ago Virginia 2.1 0.7

Here is a rumble from a different corner:

Magnitude
4.8
Date-Time
Wednesday, August 31, 2011 at 14:54:08 UTC
Wednesday, August 31, 2011 at 06:54:08 PM at epicenter
Location
6.003°N, 61.323°E
Depth
10 km (6.2 miles) set by location program
Region
CARLSBERG RIDGE
Distances
1350 km (839 miles) NNE (29°) from VICTORIA, Seychelles
1457 km (905 miles) SE (146°) from Salalah, Oman
Location Uncertainty
horizontal +/- 12.6 km (7.8 miles); depth fixed by location program
Parameters
NST= 31, Nph= 31, Dmin=>999 km, Rmss=0.99 sec, Gp=122°,
M-type=body wave magnitude (Mb), Version=4
Source
U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver
Event ID
us2011qgbl

Be Well.

reply to post by Thebel


Hi Thebel, yes a largish quake in that position needs watching, but I have to take issue with the scenario you present for the Canaries.

At the risk of repeating myself, please take a look at this post which links back to another where the theory that a large landslide in the Canaries would wipe out the East Coast is debunked. You do need to read the contents and not just take my word for it!

Of course if you disagree and have credible sources as to why the good Doctor is wrong them I am happy to take a look.

The interesting thing about this once is that it's antipodes point is close to Indonesia where they had that 6.8 recently. There has been some discussion on this thread regarding antipodes.

Magnitude
3.4
Date-Time
Wednesday, August 31, 2011 at 18:09:14 UTC
Wednesday, August 31, 2011 at 02:09:14 PM at epicenter
Location
18.605°N, 68.886°W
Depth
67.1 km (41.7 miles)
Region
DOMINICAN REPUBLIC
Distances
19 km (12 miles) W (265°) from Higüey, La Altagracia, Dominican Republic
21 km (13 miles) NNE (24°) from La Romana, La Romana, Dominican Republic
24 km (15 miles) SE (139°) from El Seybo, El Seybo, Dominican Republic
299 km (186 miles) W (275°) from San Juan, PR
Location Uncertainty
horizontal +/- 2.7 km (1.7 miles); depth +/- 3.8 km (2.4 miles)
Parameters
NST= 8, Nph= 8, Dmin=116.6 km, Rmss=0.15 sec, Gp=335°,
M-type=duration magnitude (Md), Version=0
Source
Puerto Rico Seismic Network, University of Puerto Rico
Event ID
pr11243002

Be Well.

I just noticed this one. Could this be related to the Virginia and Colorado movements last week?

Magnitude
3.1
Date-Time
Wednesday, August 31, 2011 at 09:35:12 UTC
Wednesday, August 31, 2011 at 05:35:12 AM at epicenter
Time of Earthquake in other Time Zones
Location
39.400°N, 81.270°W
Depth
5 km (3.1 miles) set by location program
Region
OHIO
Distances
2 km (2 miles) NNW (337°) from Belmont, WV
6 km (4 miles) W (274°) from St. Marys, WV
16 km (10 miles) E (90°) from Williamstown, WV
28 km (17 miles) ENE (57°) from Parkersburg, WV
160 km (99 miles) SW (224°) from Pittsburgh, PA
Location Uncertainty
Error estimate not available
Parameters
NST= 7, Nph= 7, Dmin=173.5 km, Rmss=0 sec, Gp= 94°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=1
Source
OhioSeis Network, Ohio Geological Survey, Columbus, USA
Event ID
us2011qgbs

Be Well.

Hi...I didn't see this Ohio(!?!) quake mentioned on the thread. Its (only) a 3.1...but, unique for this area. Could this be connected to the Mineral, VA quake of last week...fracking (alot of natural gas work in OH, WV and PA)...just something else to look at and discuss.


Magnitude
3.1
Date-Time
Wednesday, August 31, 2011 at 09:35:12 UTC
Wednesday, August 31, 2011 at 05:35:12 AM at epicenter
Time of Earthquake in other Time Zones
Location
39.400°N, 81.270°W
Depth
5 km (3.1 miles) set by location program
Region
OHIO
Distances
2 km (2 miles) NNW (337°) from Belmont, WV
6 km (4 miles) W (274°) from St. Marys, WV
16 km (10 miles) E (90°) from Williamstown, WV
28 km (17 miles) ENE (57°) from Parkersburg, WV
160 km (99 miles) SW (224°) from Pittsburgh, PA
Location Uncertainty
Error estimate not available
Parameters
NST= 7, Nph= 7, Dmin=173.5 km, Rmss=0 sec, Gp= 94°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=1
Source
OhioSeis Network, Ohio Geological Survey, Columbus, USA
Event ID
us2011qgbs

reply to post by Bishop2199


Ooops...we must have been typing at the same time (time stamp wise). Great minds...yada yada...my questions though too...EQ are a rarity in this part of the US (at least ones that can be felt).

They are at it again!

Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
2011-08-20 17:13:07, -18.286, 168.062, 5.9, 37.3, Vanuatu

Only a 5.9 - except now it is a 6.5.

The 7.0 looks like it may have been increased to 7.1, and the 7.1 looks like it may be a 7.2 but the details still show the original. This makes it very difficult to tell. I have to wait for the ANSS version to confirm but it is showing these upgrades in the PDE database.

ETA:

Data Package for Magnitude 6.5 Vanuatu 20-Aug-11 usc0005ha0 now available. (914 Kb download)

Web site images only and USGS PAGER PDF
usc0005ha0.zip

Since the PDF of the web page is essentially just a duplication of the images I have dropped that to save space. The web page should always be available. If anyone would like a PDF copy just u2u me and I will create one for you.

View web page here

reply to post by PuterMan



Yesterday I went looking for the 7.0 Peru quake that happened on the 29th, the only thing I could find was a 4.2
honest mistakes, I'm sure

reply to post by Cherryontop


Well that one (Peru) is still around, but it was the 24th so off the 7 days lists.

quakewatch.wordpress.com...

The USGS page is still good.

Not mistake by the way, these are changes after closer examination BUT and this is my point, they always seem to happen AFTER the 7 days.

Most people look at the 7 days list and don't bother with the 8 - 30 and anyway the 8 - 30 list does not have the mag 6+ quakes nicely marked in red just to make it more difficult to find things.

After 7 days it is passée except to el stupidos like me!