Quake Watch 2010

Sumatra now shaking with a 5.7

Magnitude 5.7 (Preliminary magnitude — update expected within 15 minutes)
Date-Time

* Saturday, July 24, 2010 at 02:11:28 UTC
* Saturday, July 24, 2010 at 09:11:28 AM at epicenter

Location 1.000°N, 99.300°E
Depth 82 km (51.0 miles) set by location program
Region NORTHERN SUMATRA, INDONESIA
Distances

* 96 km (59 miles) SE (144°) from Sibolga, Sumatra, Indonesia
* 245 km (152 miles) WNW (282°) from Pekanbaru, Sumatra, Indonesia
* 246 km (153 miles) NNW (332°) from Padang, Sumatra, Indonesia
* 357 km (222 miles) SW (228°) from KUALA LUMPUR, Malaysia

[edit on 23-7-2010 by MoorfNZ]

A M5.7 just popped up for me, in the Northern Sumatra though. Could this event be the beginning of something even bigger?

You beat me to it=)

Does anyone know what the seismicity in YS looks like now? That is one of my biggest fears, that something is going to affect one of our supervolcanos. But perhaps that is impossible?

reply to post by rasalhague


You can go HERE to get thumbnails of the seismos.

So far, you can see the quakes showing up...but nothing local in the park yet. Hopefully it will stay that way.

reply to post by rasalhague


At the moment, I would be more concerned with Long Valley as that has been a shaking!

Region
MAP 3.9 2010/07/24 02:29:41 32.718 -115.987 3.2 SOUTHERN CALIFORNIA


[edit on 23-7-2010 by Anmarie96]

Okay guys, I am cut/pasting a post from my thread on the philippines quake because I would like all your opinions, and I know some of you post mainly here.

*****

Okay, so those friends of mine that like to brainstorm:

Take a look at this list:


MAP 4.7 2010/07/23 01:57:10 -17.814 -178.663 592.6 FIJI REGION
MAP 5.3 2010/07/17 16:20:02 -15.551 -175.084 10.2 TONGA
MAP 4.8 2010/07/17 04:34:00 -20.610 -178.897 608.4 FIJI REGION


Do you notice a similarity?

Check out the recent quake map of the world: HERE

You could pretty much draw a straight line from the FIJI quakes to the Philippine quakes. They are almost the exact depth.


Coincidence? I don't think so!!!!!

****

[edit on 23-7-2010 by westcoast]

reply to post by westcoast



Edit to say link fixed

[edit on 23-7-2010 by Anmarie96]

Originally posted by Anmarie96
reply to post by rasalhague

 

At the moment, I would be more concerned with Long Valley as that has been a shaking!

Region
MAP 3.9 2010/07/24 02:29:41 32.718 -115.987 3.2 SOUTHERN CALIFORNIA


[edit on 23-7-2010 by Anmarie96]

You are correct, that is a much bigger cause for concern judging by recent seismicity. Lets just hope that these quakes were all for now, and that no major event follows this

reply to post by rasalhague


OR we could think about TOBA :-)

Magnitude 5.4
Date-Time Saturday, July 24, 2010 at 02:11:25 UTC
Saturday, July 24, 2010 at 09:11:25 AM at epicenter
Time of Earthquake in other Time Zones

Location 0.995°N, 99.524°E
Depth 38.1 km (23.7 miles)
Region NORTHERN SUMATRA, INDONESIA
Distances 50 km (30 miles) SSE of Padangsidempuan, Sumatra, Indonesia
115 km (75 miles) SE of Sibolga, Sumatra, Indonesia
340 km (210 miles) SW of KUALA LUMPUR, Malaysia
1140 km (700 miles) NW of JAKARTA, Java, Indonesia

Location Uncertainty horizontal +/- 7.6 km (4.7 miles); depth +/- 10.3 km (6.4 miles)
Parameters NST= 60, Nph= 60, Dmin=184.2 km, Rmss=1.32 sec, Gp= 76°,
M-type=body wave magnitude (Mb), Version=7
Source USGS NEIC (WDCS-D)


Event ID us2010zcal

reply to post by westcoast

Sometimes you can see things that you want to see, that string along the Fiji/New Hebrides/PNG/Phillipines just about always has something on it.

Having said that though, I did notice that there is a persistant line like you say when you look at Mag7+'s this year.
Check this out (if you haven't already)
2010 Major Quakes
I haven't put in todays Philippines quakes yet in case they are exagerated, just add 2 more to the left of the line of balls

reply to post by muzzy


Thanks for that, Muzzy, illustrated a thought I'd had in my mind...

.. are you able to plot by depth, too, showing only where the deep quakes have occurred over last year or so?

Moro isn't quite finished....

MAP 6.3 2010/07/24 05:35:03 6.372 122.670 471.0 MORO GULF, MINDANAO, PHILIPPINES

MAP 6.7 2010/07/24 05:35:02 6.210 123.710 561.0 MORO GULF, MINDANAO, PHILIPPINES

The two 6+'s have been revised to:

Magnitude 6.2
Date-Time

* Saturday, July 24, 2010 at 05:35:01 UTC
* Saturday, July 24, 2010 at 01:35:01 PM at epicenter

Location 6.194°N, 123.596°E
Depth 563.9 km (350.4 miles)
Region MORO GULF, MINDANAO, PHILIPPINES
Distances

* 136 km (85 miles) SSW (212°) from Cotabato, Mindanao, Philippines
* 176 km (109 miles) W (273°) from General Santos, Mindanao, Philippines
* 183 km (113 miles) S (177°) from Pagadian, Mindanao, Philippines
* 965 km (600 miles) E (81°) from BANDAR SERI BEGAWAN, Brunei

reply to post by MoorfNZ


You mean for Moro Gulf or the Whole World?
The easiest way to do that is to use EMSC's search which you can download for Google Earth.
Heres the results of a search I did for Mag 4 and 500km plus deep quakes Worldwide from 2004 to 2010 (today).
I altered the icons on GE to mine which show up OK on GE but don't seem to transfer to Google Maps so well (they revert to GMaps old icons) , could be because there are so many of them

Anyway heres the Google Earth File

Heres the Google Maps Map

Just about all of these deep quakes are at Back Arc Trenches.

Theres a few odd balls like behind the Andes and nestled in above North Korea

Interesting

[edit on 24-7-2010 by muzzy]

Originally posted by MoorfNZ
The two 6+'s have been revised to:

Magnitude 6.2
Date-Time

* Saturday, July 24, 2010 at 05:35:01 UTC
* Saturday, July 24, 2010 at 01:35:01 PM at epicenter

Location 6.194°N, 123.596°E
Depth 563.9 km (350.4 miles)
Region MORO GULF, MINDANAO, PHILIPPINES
Distances

* 136 km (85 miles) SSW (212°) from Cotabato, Mindanao, Philippines
* 176 km (109 miles) W (273°) from General Santos, Mindanao, Philippines
* 183 km (113 miles) S (177°) from Pagadian, Mindanao, Philippines
* 965 km (600 miles) E (81°) from BANDAR SERI BEGAWAN, Brunei [/quote


Upgraded to 6.5

reply to post by muzzy


Wow...thanks for the visual aids, those are great! I understand what you mean about seeing what you want, you are most likely right....BUT (gotta throw that in there) tell me you don't see a trend with that map?

We might say that the MORO GULF quakes aren't supposed to happen. Yet deep quakes do account for more than 20 percent of all earthquakes. But why worry, the deeper the earthquake, the more powerful it is, but it’s also far less likely to reach the surface.

So, why do I say that quakes like this aren't supposed to happen? Simply because the Earth gets hotter by about 1 degree C with each 100 meters of depth on average. Combine that with high pressure underground and it's clear that by about 50 kilometers down, on average the rocks should be too hot and squeezed too tight to crack and grind the way they do at the surface.

[edit on 24/7/2010 by Roald]

Just an observation, but it seems as if the Fox Islands have quietened down quite abruptly at the start of the activity in the Indonesia/Philippines region, and still hasn't resumed on the 2.5+ lists... *thinking out loud*

If the epicenter was 600 km deep, how strong was this quake at the epicenter?
Magnitude 10? 11?

At a depth of 600 km is the Earth's mantle. The epicenter was therefore in the mantle. WoW!

reply to post by Austria
The crust we stand on is only about 30 km thick. Out in the oceans, it's even thinner, getting down to 5 km in places. Beneath this crust is the mantle of the Earth; a region that extends down a depth of almost 2,900 km. So when we take the thickness of the crust into consideration, then a quake in the mantle is not that "big" deal.