Quake Watch 2011

thank you for your response Puterman!

i'm sorry i wasnt clear...i do live in Santa Clarita, CA
- i didn't take into consideration that the earthquake was shallow that's why there were more aftershocks right after it first struck.

i asked if it's magmatic in nature because of the depth of the quake, that and i was wondering if there were any "dead" fault lines in my area that connects to long valley.

i wont worry for now - i'm prepared somewhat with supplies - it's the mental part and preparing the kids when it strikes is what im having problem.

6.8 Alaska

Data Package for Magnitude 6.8 Alaska usc0005n83 now available. (1.6 Mb download)

Web site images only and USGS PAGER PDF
Alaska_usc0005n83.zip

If anyone would like a PDF copy of the web page just u2u me and I will create one for you.

View web page here

6.7 Argentina

Data Package for Magnitude 6.7 Argentina usc0005n9z now available. (2.0 Mb download)

Web site images only and USGS PAGER PDF
Argentina_c0005n9z.zip

If anyone would like a PDF copy of the web page just u2u me and I will create one for you.

View web page here

I wish I had a siesmograph at my house.
Across the street and behind that house there are contractors vibrating in poles for a new house in a new subdivision, its like a Mag 3.8 that never ends (based on Mag 3's we get from the Tararua Ranges from time to time)
been going on for about half an hour already and I'm over it
everything in our house is vibrating slightly, nothing is going to fall over though.
I'm not sure how deep they have to go to get to bedrock, we are on old sand dunes so it could be up to 20 metres down.
Quite interesting how the vibration varies in intensity, I wonder if there are different densities of sand below us

reply to post by muzzy

Keep an eye on your drywall. Stucco can also get damaged from vibratory action.
Any damage, find a supervisor on the jobsite.

reply to post by westcoast


OAT
No data available in real-time systems
No data available in archive

That is why i picked OSI - not so far away, public and has data.

That's a cracker of a seismogram - Sonoma Mountain. Also not on a public network!!

One feels tempted to refer to them and persons serving behind a bar, but that is rather unkind to real Bar Stewards!

That looks like some serious interference. I have seen it on other ones on that network in the past. I will do some checking later.

ETA: Looks as if Sonoma is always like that.

reply to post by UtahRosebud


I said "no one likely", key word being "likely", it does not mean that no one "certainly" didn't feel it, besides, what I should have said, was that "likely no damage was done", because the 6.7 (was a 6.4) was still 400 miles deep.

Looks like the Vogtland (Czech-Germany) Swarm is starting up again (Closest Station NKZ) Though its hard to tell what i´m seeing there with all those Quakes around the World...

Puuuuuttttttteeeeeeerrrrrr

reply to post by Shenon


Now there's a pretty little seismogram so nicely decorated! So fetching all in black as well. Not nearly so pretty in colour: KHC.CZ..EHZ.2011.245

Yes I have been watching those coming through during the day from EMSC mainly under Czech Republic

Not much on Greafenburg: GRA1.GR..BHZ.2011.245

I think that one needs a bit of a wind up. This looks better: GRA1.GR..BHZ.2011.245




Sorry meant to add that most of those are indeed local quakes.

reply to post by PuterMan


Domo Arrigato. Looks much better (or worse?) Still watching EMSc and the Seismos now and then,but no Time to go deeper since i´m concentrating on the World Economy currently. Good thing you have an Eye on this Swarm. Don´t want a suprise,since i´m not that far away from it (roughly 130-140 km NE...)

OT: Back to studying the Markets

MAG 6.2 SOUTH SANDWICH ISLANDS REGION


earthquake.usgs.gov...

Deep, but worth mentioning.

Saturday September 3 2011, 05:42:45 UTC 5 minutes ago Nevada 1.2 9.7 Detail
Saturday September 3 2011, 05:21:09 UTC 27 minutes ago Greater Los Angeles area, California 2.4 2.9 Detail
Saturday September 3 2011, 04:57:14 UTC 51 minutes ago Southern California 1.0 16.1 Detail
Saturday September 3 2011, 04:50:15 UTC 58 minutes ago New Britain region, Papua New Guinea 4.9 167.2 Detail
Saturday September 3 2011, 04:49:00 UTC 59 minutes ago South Sandwich Islands region 6.2 106.0 Detail

I hope everyone enjoys their week end

I'm possibly going to add the Fox Is 02/9 to the Mag 7+ maps and lists, USGS had 7.1 originally, but downgraded, the Russians have 7.1Ms/28 stations and 7.0mb/18 stations. The Ausses have 7.1Mw too, but not finalised yet.

Data Package for Magnitude 6.2 Sth Sandwich Islands 03-Sep-11 usc0005nnw now available. (851 Kb download)

Web site images only and USGS PAGER PDF
Sandwich-Isls_6-2_c0005nnw.zip

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 muzzy


Just my 2 cents muzzy but the USGS MS value is 6.7 and MS is the closest match to Mw, and I assume that you are trying to use Mw where possible. Most of the values, no all of the values, on the USGS page are mb calculated on the P wave arrival.

Note on EMSC that the first value in the phase data (mb as always with them) is 5 minutes after the event, but is far from being the first station in the list. Could this be because mb is saturated just above those levels and therefore is not accurate?

If you recall the diagram on page 9 of this document - Magnitude Scale and Quantification of Earthquakes the mb scale reaches saturation around 6.5mb+

[atsimg]http://files.abovetopsecret.com/images/member/8c1f43af537e.gif[/atsimg]

As I say, just my 2c and I have not looked at the 'skis or anyone else.

reply to post by PuterMan


True enough. I do try and give the quake a Mw reading on the lists, but all the magnitude types that are available from all sources are put on each tag on the maps, and I pick the biggest one regardless to transfer to the lists, because sometimes Mw isn't available.
Thats the quandry about trying to do a completely balanced picture going back 3000 years, prior to the 1980's Mw wasn't used and even on the Centennial List my understanding is that Engdahl and Villaseñor have either revisited the data on individual events or used some kind of conversion formula from Ms to Mw.

Me is available for the Fox Is. quake, this isn't always available either. they had 7.0 Me

MM Intensity isn't much use either as that depends on distance from the epi centre

Wow - it is quiet in the quake report room today

1st anniversary today and it's relatively quiet....

ChCh Quake

reply to post by aorAki


Indeed, an event that was to change all New Zealanders lives forever.

alysha.angel was the first to break the news on ATS Quake Watch 2010 started about here

MAP 7.0 2011/09/03 22:55:37 -20.645 169.728 135.7 VANUATU

here is the link

earthquake.usgs.gov...

Magnitude
7.0 (Preliminary magnitude — update expected within 15 minutes)
Date-Time
Saturday, September 03, 2011 at 22:55:37 UTC
Sunday, September 04, 2011 at 09:55:37 AM at epicenter
Location
20.645°S, 169.728°E
Depth
135.7 km (84.3 miles) set by location program
Region
VANUATU
Distances
133 km (82 miles) SSE (159°) from Isangel, Vanuatu
215 km (133 miles) ENE (63°) from Tadine, Loyalty Islands, New Caledonia
355 km (221 miles) SSE (155°) from PORT-VILA, Vanuatu
1859 km (1155 miles) ENE (69°) from Brisbane, Australia
Location Uncertainty
Error estimate not available
Parameters
NST= 12, Nph=0, Dmin=0 km, Rmss=0 sec, Gp= 79°,
M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp), Version=B
Source
NOAA Pacific Tsunami Warning Center
Event ID
pt11246003

earthquake.usgs.gov...