Quake Watch 2010

reply to post by Anmarie96


Yes indeedy, I know all that, but that does not SPECIFICALLY answer the question.

Take this one

M 4.7, Philippine Islands region

Date: Sunday, July 25, 2010 12:28:45 UTC
Sunday, July 25, 2010 08:28:45 PM at epicenter
Depth: 61.40 km (38.15 mi)

It is right at the bottom of a 6+km trench Is that 61.4 from the surface of the bottom? Bear in mind that the distance across the bottom of the trench there is approximately 15km if that.

reply to post by PuterMan


Hummmm - good point! That would be difficult to figure I would say - I await your response from the USGS

Originally posted by Anmarie96
Hebejeebee's - This is deep for this area.

Magnitude 5.2
Date-Time Tuesday, July 27, 2010 at 16:54:12 UTC
Wednesday, July 28, 2010 at 01:54:12 AM at epicenter

Location 7.264°S, 126.411°E
Depth 370.8 km (230.4 miles)
Region KEPULAUAN BARAT DAYA, INDONESIA
Distances 173 km (107 miles) NNE (32°) from DILI, East Timor
443 km (275 miles) SSW (206°) from Ambon, Moluccas, Indonesia
448 km (278 miles) NE (44°) from Kupang, Timor, Indonesia

Location Uncertainty horizontal +/- 18.9 km (11.7 miles); depth +/- 8.8 km (5.5 miles)
Parameters NST= 29, Nph= 31, Dmin=362.9 km, Rmss=1.17 sec, Gp= 43°,
M-type=body wave magnitude (Mb), Version=6
Source U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver

Event ID us2010zfbc

Seems like this one was an erratic reading. I looked at USGS just recently and only the M5.0 was there, this one had been removed...

I just came across this superb example of an harmonic tremor.

Listen to them (x2) here

4.6 nr Te Anau, South Island, New Zealand

Universal Time July 27 2010 at 22:13
NZ Standard Time Wednesday, July 28 2010 at 10:13 am
Latitude, Longitude 45.04°S, 167.20°E
Focal Depth 110 km
Richter magnitude 4.6
Region Fiordland
Location

* 60 km north-west of Te Anau
* 70 km south-west of Milford Sound
* 180 km north-west of Invercargill
* 270 km west of Dunedin

www.geonet.org.nz...

Another NZ quake (felt), this time up the other end of the country...

4.2 Bay of Plenty, North Island, NZ

Universal Time July 28 2010 at 5:22
NZ Standard Time Wednesday, July 28 2010 at 5:22 pm
Latitude, Longitude 37.42°S, 177.28°E
Focal Depth 11 km
Richter magnitude 4.2
Region Bay of Plenty
Location

* 10 km north-east of White Island
* 50 km north-west of Te Kaha
* 70 km north-east of Whakatane
* 230 km east of Auckland


www.geonet.org.nz...

follow up to post by muzzy

Another 20 quake swarm at Okataina Volcano this morning NZST
REF, LAT, LONG, DATE/TIME UTC, DEPTH, MAG (ML)
3346287, -38.13969, 176.50003, 2010/7/27 18:56:4, 4, 2.249
3346297, -38.14746, 176.48602, 2010/7/27 19:20:26, 6, 1.994
3346308, -38.10266, 176.5273, 2010/7/27 19:46:26, 0, 1.976
3346310, -38.16275, 176.49199, 2010/7/27 19:53:3, 7, 3.203
3346312, -38.07795, 176.459, 2010/7/27 19:57:50, 5, 2.55
3346314, -38.13774, 176.49301, 2010/7/27 20:2:20, 2, 2.904
3346315, -38.14906, 176.49643, 2010/7/27 20:6:19, 4, 2.344
3346318, -38.1297, 176.4666, 2010/7/27 20:15:52, 6, 2.389
3346321, -38.14143, 176.47681, 2010/7/27 20:23:24, 5, 2.731
3346323, -38.08115, 176.53175, 2010/7/27 20:26:7, 5, 2.233
3346327, -38.12216, 176.52818, 2010/7/27 20:33:20, 1, 2.302
3346329, -38.14401, 176.44679, 2010/7/27 20:41:26, 2, 2.214
3346330, -38.13774, 176.45572, 2010/7/27 20:46:15, 3, 0.936
3346331, -38.13833, 176.42574, 2010/7/27 20:50:16, 5, 1.797
3346333, -38.13763, 176.47778, 2010/7/27 20:52:44, 0, 2.304
3346336, -38.09967, 176.50217, 2010/7/27 20:59:25, 5, 2.463
3346344, -38.10514, 176.48947, 2010/7/27 21:19:11, 10, 3.059
3346346, -38.12784, 176.46614, 2010/7/27 21:24:28, 7, 2.288
3346354, -38.12487, 176.47263, 2010/7/27 21:45:54, 5, 2.431
3346379, -38.14181, 176.47382, 2010/7/27 22:56:11, 5, 2.712

Map

[atsimg]http://files.abovetopsecret.com/images/member/07b5cd75a4b8.jpg[/atsimg]
files.abovetopsecret.com...




[edit on 28-7-2010 by muzzy]

OK, I had an email reply from USGS just now and since I am just a little surprised I will post it in full to see what you make of it.

The depth where the earthquake begins to rupture. This depth may be relative to mean sea-level or the average elevation of the seismic stations which provided arrival-time data for the earthquake location. The choice of reference depth is dependent on the method used to locate the earthquake. Sometimes when depth is poorly constrained by available seismic data, the location program will set the depth at a fixed value. For example, 33 km is often used as a default depth for earthquakes determined to be shallow, but whose depth is not satisfactorily determined by the data, whereas default depths of 5 or 10 km are often used in mid-continental areas and on mid-ocean ridges since earthquakes in these areas are usually shallower than 33 km.

I read this to say that undersea quake depths are taken form mean sea level.

Oh My -

so far - upgrade to 5.3

Magnitude 5.2 (Preliminary magnitude — update expected within 15 minutes)
Date-Time Wednesday, July 28, 2010 at 16:12:10 UTC
Wednesday, July 28, 2010 at 09:12:10 AM at epicenter

Location 43.815°N, 125.619°W
Depth 33 km (20.5 miles) set by location program
Region OFF THE COAST OF OREGON
Distances 117 km (72 miles) W (278°) from Winchester Bay, OR
118 km (73 miles) WNW (297°) from Barview, OR
119 km (74 miles) WNW (283°) from Lakeside, OR
121 km (76 miles) WNW (294°) from Coos Bay, OR
203 km (126 miles) W (263°) from Eugene, OR
303 km (188 miles) SW (232°) from Portland, OR

Location Uncertainty Error estimate not available
Parameters NST= 58, Nph= 58, Dmin=124 km, Rmss=1.54 sec, Gp=180°,
M-type=body wave magnitude (Mb), Version=1
Source West Coast and Alaska Tsunami Warning Center/NOAA/NWS

Event ID at00033353


[edit on 28-7-2010 by Anmarie96]

Puterman - That sounds very, very vague to me



[edit on 28-7-2010 by Anmarie96]

reply to post by Anmarie96


Interesting the Oregon one. There were two 5+ in may and one in Feb. This is the list for the last 365 days 5+

Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
28/07/2010 16:12:10,43.8150,-125.6190,5.20,33.00,off the coast of Oregon
13/05/2010 05:35:11,42.1819,-126.4749,5.10,9.70,off the coast of Oregon
07/05/2010 17:46:14,44.3687,-129.4411,5.10,10.00,off the coast of Oregon
04/02/2010 20:20:21,40.4123,-124.9613,5.90,23.60,offshore Northern California
10/01/2010 00:27:39,40.6520,-124.6925,6.50,29.30,offshore Northern California
04/11/2009 12:38:29,43.4603,-126.7738,5.30,10.00,off the coast of Oregon
29/08/2009 10:11:15,43.8876,-128.5820,5.10,10.00,off the coast of Oregon

At 9:12 AM Pacific Daylight Time on July 28, an earthquake with preliminary magnitude 5.2 occurred 130 miles/209 Km west of Eugene, Oregon .

The magnitude is such that a tsunami WILL NOT be generated. This will be the only WCATWC message issued for this event.

We also had this earlier today

MAP 5.0 2010/07/28 12:07:47 52.766 -169.398 35.0 41 km ( 26 mi) WSW of Nikolski, AK
MAP 5.5 2010/07/28 11:31:50 52.683 -169.309 35.0 42 km ( 26 mi) SW
MAP 4.4 2010/07/28 04:07:54 52.685 -169.537 11.6 54 km ( 33 mi) WSW of Nikolski, AK

News link on the Oregon quake,

No reports of any damage.

wireupdate.com...

I am quiet surprised we have not had any aftershocks off the coast of Oregon. I am hoping it was not a foreshock....

This is the next rattle

Magnitude 5.3
Date-Time Wednesday, July 28, 2010 at 18:21:15 UTC
Thursday, July 29, 2010 at 05:21:15 AM at epicenter
Time of Earthquake in other Time Zones

Location 12.252°S, 165.455°E
Depth 78.2 km (48.6 miles)
Region SANTA CRUZ ISLANDS
Distances 175 km (110 miles) SSW of Lata, Santa Cruz Islands, Solomon Isl.
405 km (255 miles) NNW of Luganville, Espiritu Santo, Vanuatu
675 km (420 miles) ESE of HONIARA, Guadalcanal, Solomon Islands
2130 km (1320 miles) NE of BRISBANE, Queensland, Australia

Location Uncertainty horizontal +/- 6.7 km (4.2 miles); depth +/- 23.1 km (14.4 miles)
Parameters NST= 51, Nph= 51, Dmin=>999 km, Rmss=0.75 sec, Gp= 61°,
M-type=body wave magnitude (Mb), Version=6
Source USGS NEIC (WDCS-D)


Event ID us2010zgbj


[edit on 28-7-2010 by Anmarie96]

Originally posted by PuterMan
reply to post by Anmarie96

 

Interesting the Oregon one. There were two 5+ in may and one in Feb. This is the list for the last 365 days 5+

Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
28/07/2010 16:12:10,43.8150,-125.6190,5.20,33.00,off the coast of Oregon
13/05/2010 05:35:11,42.1819,-126.4749,5.10,9.70,off the coast of Oregon
07/05/2010 17:46:14,44.3687,-129.4411,5.10,10.00,off the coast of Oregon
04/02/2010 20:20:21,40.4123,-124.9613,5.90,23.60,offshore Northern California
10/01/2010 00:27:39,40.6520,-124.6925,6.50,29.30,offshore Northern California
04/11/2009 12:38:29,43.4603,-126.7738,5.30,10.00,off the coast of Oregon
29/08/2009 10:11:15,43.8876,-128.5820,5.10,10.00,off the coast of Oregon

I found the location interesting. If I recall correctly this is on the other side of the plate then the ones you have listed for Oregon and of course are more north then the North CA ones.

Morning peeps


Big one off oregon eh? westcoast hasn't posted yet, wonder if he felt it.

(whispers... btw I got 3 checks in the mail today from EDD, get a 4th one tomorrow I think) (4x865=happiness)

reply to post by berkeleygal


So with the 5+ off Oregon, are we seeing the start of the reaction to the Moro Gulf subduction series of quakes across the other side of the oceanic plate on West Coast of Alaska/US?

The Fox Islands region is cranking out 4+'s again...

(*whispers* What's EDD?)


[edit on 29-7-2010 by MoorfNZ]

reply to post by PuterMan


Maybe someone on this thread can help.

When the recent 7.0 and above Philippine quakes happened, within an hour or 3 I was looking at a list of quakes on a standard quake website. I do not think it was USGS.

I don't know what it was.

I counted 9 quakes listed 7.0 and above. I think at least 5-7 of those quakes were listed next to each other.

And, then there was the South China sea quake beyond those Philippine quakes.

Since then I have found no evidence of such a number of 7.0 and above quakes. The most I can find listed are 3.

I know what I saw. I noted it to my housemate who was too busy to call it up on her computer.

I have searched a fair number of quake sites and not found anything close to what I saw.

It's extremely frustrating.

1. I was shocked to see so many 7.0 and above quakes in such a short time and in the same place, essentially.

2. Then I was shocked the next day to see that the info had disappeared and others thought I was looney for claiming such an out of the norm listing.

DID ANYONE ELSE SEE SUCH A THING ON ANY SITE?

WHAT MIGHT HAVE HAPPENED???

Were those mostlyl preliminary listings quickly corrected???

reply to post by MoorfNZ


I was at the grocery store today and when I came out to load up the bike there was an old man sitting near to where I was. I said to him, "nice day huh?" and he replied, "I don't know, something isn't right...something in the air, I can feel it and have been feeling it for a while now. I think something big is about to happen."

Well, this spooked me and I said to him if he felt it would be a big earthquake. He said this is what he feels and he went on to say he had talked to other people who felt the same. I told him to stay safe and I went on my way.

very strange. I can't stop thinking about it.

(whispers back... EDD=unemployment, I been without for 8 weeks now.)

Originally posted by berkeleygal
Morning peeps

Big one off oregon eh? westcoast hasn't posted yet, wonder if he felt it.

(whispers... btw I got 3 checks in the mail today from EDD, get a 4th one tomorrow I think) (4x865=happiness)

Hey there! I've been out in the sun all day, beautiful here. If I felt that, I didn't realize it. Funny, the one we had a couple of months back was smaller and I felt it, but not this one. I know it all depends on where it falls and how deep, etc. My dogs were fine also. I am thinking more and more that the different fault lines 'sound' different and have varying affects on both people and animals.

If you look at the MAP you can clearly see how the activity continues to creep up the coast line...and Alaska is once again rockin good.

I do think that there is a possibility of a connection between this and the philippines quakes. But I don't think it would be enough to counter all that energy. We'll see...no aftershocks still, so hopefully something bigger isn't building.

EDIT TO ADD: Just as an after-thought, I remembered something quite strange that happened yesterday afternoon. I was out in my backyard when I heard an odd sound: A large flock of canadian Geese. They flew right over my house, heading North. My husband and I both commented on how weird it was that they were still around. Usually they are long gone by now.

[edit on 29-7-2010 by westcoast]

Originally posted by PuterMan
OK, I had an email reply from USGS just now and since I am just a little surprised I will post it in full to see what you make of it.

The depth where the earthquake begins to rupture. This depth may be relative to mean sea-level or the average elevation of the seismic stations which provided arrival-time data for the earthquake location. The choice of reference depth is dependent on the method used to locate the earthquake. Sometimes when depth is poorly constrained by available seismic data, the location program will set the depth at a fixed value. For example, 33 km is often used as a default depth for earthquakes determined to be shallow, but whose depth is not satisfactorily determined by the data, whereas default depths of 5 or 10 km are often used in mid-continental areas and on mid-ocean ridges since earthquakes in these areas are usually shallower than 33 km.

I read this to say that undersea quake depths are taken from mean sea level.

Thats what it sounds like, well you learn something every day eh.
Thanks for doing that.

BUT

"average elevation of the seismic stations which provided arrival-time data for the earthquake location"
hmmmm now thats interesting, OK sure there aren't many station 10 km up a mountain, but a LOT of them are 1km up. Something to keep in mind I guess.

I have a list (on Excel) of all siesmic stations that gives the Lat and Long and ELEVATION, now I know why they had that detail in the data.