Quake Watch 2010

reply to post by Wookiep


I remember reading an article a few days ago where it was several thousand.. I will have to look.

Originally posted by MoorfNZ
reply to post by Wookiep

 

Lost count but thousands - at one point there were around 3,500 quakes on the Cali/Baja map for the week. That was a week or so ago and, as you say, they're still going...

Ok, so 3500 was for 1 week? A week or so ago? Incredible. I had the mis-understanding that the count that was going on in this thread was the *total* (for some reason) from the time of the quake.. So we're talking tens of thousands. Ridiculous!

reply to post by Wookiep


Yeah, that article I was talking about was from over a week ago..
link

Not a lot of detail, and not very recent either.

[edit on 21-4-2010 by broahes]

reply to post by broahes


Ok, So I guess I'm slightly confused. So the official count a week or so ago *from* the time of the intial quake was around 3k?

I'm confused because I'm wondering if the counts on here were for the *week* ( quakes generated in that one week) or the count of ALL aftershocks from the time of the 7.2

Edit for further clarity:

at one point there were around 3,500 quakes on the Cali/Baja map for the week

[edit on 21-4-2010 by Wookiep]

reply to post by Wookiep


I'm a little confused too. I admit that I'm very new to this, and at this point addicted to say the least..

Originally posted by broahes
reply to post by Wookiep

 

I'm a little confused too. I admit that I'm very new to this, and at this point addicted to say the least..

No worries, I'm equally confused. That's why I love ATS because we have some serious experts out there to halt that confusion.

reply to post by broahes


Go back one page and look at my post. The total - FROM the time of the 7.2 - is just under 5000.

www.abovetopsecret.com...



[edit on 21/4/2010 by PuterMan]

reply to post by PuterMan


Thank you! (it was me who asked. :p ) Not as insane as I was seriously about think...but still pretty crazy IMO! Then again what the hell do I know.

AND I have a seriously BAD habit of overlooking your posts/replies for some reason.. They seem to show up WAY later for me. That, or I'm just going blind!


[edit on 21-4-2010 by Wookiep]

5.2 Tonga just come up.

Magnitude 5.2
Date-Time

* Thursday, April 22, 2010 at 04:02:40 UTC
* Thursday, April 22, 2010 at 05:02:40 PM at epicenter
* Time of Earthquake in other Time Zones

Location 15.146°S, 173.279°W
Depth 45.2 km (28.1 miles)
Region TONGA
Distances 100 km (65 miles) NNE of Hihifo, Tonga
220 km (135 miles) SW of APIA, Samoa
690 km (430 miles) NNE of NUKU`ALOFA, Tonga
2685 km (1660 miles) NNE of Auckland, New Zealand
Location Uncertainty horizontal +/- 25.6 km (15.9 miles); depth +/- 4.5 km (2.8 miles)
Parameters NST=157, Nph=171, Dmin=211.5 km, Rmss=1.43 sec, Gp=104°,
M-type=body wave magnitude (Mb), Version=6
Source

* USGS NEIC (WDCS-D)

Event ID us2010vjaj

[edit on 21/4/2010 by PuterMan]

reply to post by PuterMan


Last question for you Puterman! Are 5k aftershocks normal within (less than) a month of a 7.2? Sorry, I'm still learning this EQ lingo.

[edit on 21-4-2010 by Wookiep]

reply to post by MoorfNZ


Sorry, been busy and now off to the land of nod. Looks about level at Baja.

[atsimg]http://files.abovetopsecret.com/images/member/5e52d1448b05.png[/atsimg]

[edit on 21/4/2010 by PuterMan]

reply to post by PuterMan


Wow, that is amazing. Sounds like a pretty high number to be normal. Thanks for pointing out what you already pointed out.

Ok, I'll stop with the side chatter.. I don't want to get anyone pissed at me for derailing the purpose of the thread. Thanks again for your contributions all the same.

Originally posted by Wookiep
reply to post by PuterMan

 

Last question for you Puterman! Are 5k aftershocks normal within (less than) a month of a 7.2? Sorry, I'm still learning this EQ lingo.

[edit on 21-4-2010 by Wookiep]

He's gone to bed, so I'll try this one

Because the quake was situated pretty much in the US, or in a region USGS report quakes 2.5 and over (instead of the rest of the world where they usually limit to reporting quakes over 4.5), there were far more quakes reported than, say, after the Chile or China quakes. Hence the large numbers being listed.

Big quakes do spark off lots of aftershocks - as to what is normal, I'm not sure there's an average no. used for comparison anywhere.

Having not watched a U.S. quake that big before on USGS I'm not sure whether 5,000+ being reported is excessive or not. I'm thinking not.

FYI - here's the USGS main aftershock map (covering 48 hrs from main 7.7) earthquake.usgs.gov...,%20Mexico

Just my 0.02cents


[edit on 22-4-2010 by MoorfNZ]

Originally posted by boondock-saint

Originally posted by muzzy

Originally posted by Aggie Man
Here is a decent sized one:

Magnitude 6.2 (Preliminary magnitude — update expected within 15 minutes)
Date-Time

* Wednesday, April 21, 2010 at 17:20:31 UTC
* Thursday, April 22, 2010 at 06:20:31 AM at epicenter

Location 15.239°S, 172.828°W
Depth 32 km (19.9 miles) set by location program
Region SAMOA ISLANDS REGION
Distances

* 198 km (123 miles) SW (216°) from APIA, Samoa
* 253 km (157 miles) WSW (244°) from PAGO PAGO, American Samoa
* 399 km (248 miles) NNE (18°) from Neiafu, Tonga
* 2493 km (1549 miles) W (272°) from PAPEETE, Tahiti, French Polynesia
Event ID at00187043

Downgraded to 5.9

Problem with that downgrade is the location.
Was originally stated in Samoa then when downgraded
the epicenter moved 557 miles to Tonga. How can
this be considered the same event???

I din't see the original event on USGS, I seen it first on GEOFON when I opened up, and it said Tonga there, so I can't comment.

My take would be that although the event was physically closer as the bird flies to Samoa than to the main islands of Tonga, the event was on the Tongan Plate rather than the Pacific Plate ( where Samoa is).
Or maybe they are measuring the distance to the most northern Tongan island of Tafahi which is only 109km away.
This is something I never noticed before, but it adds up when you look at the location of the September 29, 2009 Samoa 8.1 (the one with the Tsunami) It was closer to Tonga in distance, but because it was on the Pacific Plate ........ it got called the " Samoa Quake"

Helps if you have Google Earth and open the Earthquakes layer under Gallery, and also use the kml download from USGS for the last 7 days (here)

Originally posted by PuterMan
5.2 Tonga just come up.

Magnitude 5.2
Date-Time

* Thursday, April 22, 2010 at 04:02:40 UTC
* Thursday, April 22, 2010 at 05:02:40 PM at epicenter
* Time of Earthquake in other Time Zones

Location 15.146°S, 173.279°W
Depth 45.2 km (28.1 miles)
Region TONGA
Distances 100 km (65 miles) NNE of Hihifo, Tonga
220 km (135 miles) SW of APIA, Samoa
690 km (430 miles) NNE of NUKU`ALOFA, Tonga
2685 km (1660 miles) NNE of Auckland, New Zealand
Location Uncertainty horizontal +/- 25.6 km (15.9 miles); depth +/- 4.5 km (2.8 miles)
Parameters NST=157, Nph=171, Dmin=211.5 km, Rmss=1.43 sec, Gp=104°,
M-type=body wave magnitude (Mb), Version=6
Source

* USGS NEIC (WDCS-D)

Event ID us2010vjaj

[edit on 21/4/2010 by PuterMan]

5km and 212.03 degrees south west of this mornings 5.9

Magnitude 5.1 SOUTH SANDWICH ISLANDS REGION

Date-Time

* Thursday, April 22, 2010 at 08:50:21 UTC
* Thursday, April 22, 2010 at 06:50:21 AM at epicenter

Location 56.535°S, 25.726°W
Depth 35 km (21.7 miles) set by location program
Region SOUTH SANDWICH ISLANDS REGION

Distances 90 km (55 miles) E of Visokoi Island, South Sandwich Islands
280 km (175 miles) N of Bristol Island, South Sandwich Islands
3480 km (2170 miles) SE of BUENOS AIRES, D.F., Argentina

[edit on 22-4-2010 by MoorfNZ]

umm, i dunno.

Cnn newsticker just said a 6.2 in samoa
don't see that on UsGs

ok, I read back a few posts, looks like there is was some mistake over where it happened.

anyway, I am still seeing CNN newsticker saying 6.2 samoa

I give up, nighty night

HAPPY EARTH DAY

[edit on 22-4-2010 by berkeleygal]

reply to post by PuterMan


Sounds fine with me. Will check the other page out.
2nd line

Magnitude 4.6
Date-Time Thursday, April 22, 2010 at 14:22:02 UTC
Thursday, April 22, 2010 at 07:22:02 AM at epicenter

Location 32.663°N, 115.802°W
Depth 7.4 km (4.6 miles)
Region SOUTHERN CALIFORNIA
Distances 18 km (11 miles) SW (216°) from Seeley, CA
20 km (12 miles) ESE (115°) from Ocotillo, CA
27 km (17 miles) WSW (239°) from El Centro, CA
31 km (19 miles) W (272°) from Mexicali, Baja California, Mexico
115 km (72 miles) E (82°) from Tijuana, Baja California, Mexico

Location Uncertainty horizontal +/- 0.6 km (0.4 miles); depth +/- 1.3 km (0.8 miles)
Parameters Nph= 53, Dmin=7 km, Rmss=0.34 sec, Gp=158°,
M-type=local magnitude (ML), Version=4
Source California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR

Event ID ci10629213

This ones for you WestCoast

Here this looks better

MAP 2.1 2010/04/22 14:25:38 45.367 -121.760 1.0 17 km ( 11 mi) E of Mount Hood Village, OR
MAP 2.1 2010/04/21 12:42:00 45.361 -121.759 5.7 17 km ( 11 mi) E of Mount Hood Village, OR


[edit on 22-4-2010 by Anmarie96]