Quake Watch 2010

ybe it was this that woke me up
Its a long way from me though at the Subduction Zone

Reference Number 3354568/G
Universal Time August 12 2010 at 14:27
NZ Standard Time Friday, August 13 2010 at 2:27 am
Latitude, Longitude 40.74°S, 177.19°E
Focal Depth 25 km
Richter magnitude 4.5ML
Region Hikurangi Trough
Location

* 70 km south-east of Porangahau
* 80 km east of Castlepoint
* 120 km south of Hastings
* 210 km east of Wellington

www.geonet.org.nz...

Yawn

Is everyone asleep?

Magnitude
7.1
Date-Time
Thursday, August 12, 2010 at 11:54:16 UTC
Thursday, August 12, 2010 at 06:54:16 AM at epicenter
Time of Earthquake in other Time Zones
Location
1.260°S, 77.312°W
Depth
211 km (131.1 miles) set by location program
Region
ECUADOR
Distances
145 km (90 miles) E of Ambato, Ecuador
155 km (95 miles) ENE of Riobamba, Ecuador
155 km (95 miles) SSW of Nueva Loja, Ecuador
175 km (110 miles) SE of QUITO, Ecuador
Location Uncertainty
horizontal +/- 3.3 km (2.1 miles); depth fixed by location program
Parameters
NST=523, Nph=523, Dmin=752.8 km, Rmss=0.87 sec, Gp= 14°,
M-type=teleseismic moment magnitude (Mw), Version=8
Source
USGS NEIC (WDCS-D)
Event ID
us2010zwa5

Bleh never mind

[edit on 12-8-2010 by whoshotJR]

reply to post by berkeleygal


You still haven't had your coffee - see prior page

reply to post by Anmarie96


For a second I thought my equake froze up and we had another 7+ hit there. I was thinking we are really rocking and rolling right now.

reply to post by Anmarie96


OK heheh, had coffee, went to Walgreens, Trader Joes and Radio Shack and watered the garden and then saw your post and all the ones prior.

Oy! I was not on top of things, my bad!

My google earthquake notifier says there are no new big ones to report.

Sick of the conflictions I decide to e-mail GEOFON and ask them about their magnitudes this morning.
I asked
> Hello,
> I have been following your web site for a few years now monitoring earthquakes
> as your network sometimes picks up quakes in our Pacific Region that USGS miss.
> I go to your site geofon.gfz-potsdam.de... or use the RSS feed
> One thing that isn't clear is what type of magnitude does the M= represent?
> Is it Mw, Ms, Mb , ML or what?
> Thanks
>Muzzy
>New Zealand

I got this reply;

Dear Muzzy, ours is actually a composite magnitude "trying" to be the best Mw estimate at any given time. A weighted average which for small magnitudes is dominated by mb and for large magnitudes by Mw. This allows decent magnitude estimates throughout a large range with the robustness of mb for smaller events but without saturating for large events. In practice, for most events our composite magnitude can be used as Mw. ML is used at nearer distances up to a few hundred km. Ms isn't used at all because it is too slow. Thanks for your interest in our seismic monitoring! Best regards, JS gfz-potsdam

Clear as Rotorua Mud


[edit on 12-8-2010 by muzzy]

reply to post by muzzy


Sounds good to me! If it is distant and little it is like mb and if it is distant and large it is like Mw, but if it is local it is ML (presumably when it is small?)

Yup! I get that! It is all things to all men. Mw is good, I need Mw.

reply to post by tierrafragil
Yes we have Tungurahua volcano in the area. And it did erupt earlier this year. Might see it go off again.

As far as I know, Tungurahua is one of South America's most active volcanoes. Since 2000, a new lava dome has been growing in its summit crater. Tungurahua's activity has been characterized by frequent powerful ash explosions, producing ash plumes of several kilometers height as well as dangerous pyroclastic flows.

On Google Earth you still can see smoke from the volcano.



Then we have Sangay Volcano. One of the highest active volcanoes in the world and one of Ecuador's most active ones.

More or less continuous eruptions were reported from 1728 until 1916, and again from 1934 to the present.

[edit on 13/8/2010 by Roald]

There's a thread about millions of dead animals floating in some river in South America. I wonder if there's some relation between that and the recent earthquake/volcano activity down there. Sulfer?

Wow! Millions of dead animals floating in rivers in South America!
www.abovetopsecret.com...

[edit on 8/13/2010 by this_is_who_we_are]

Swarm of moderate quakes at Mid Atlantic Ridge, SW of Azores

5.1, 13/08/2010 6:28, 37.078, -32.992, 10, AZORES ISLANDS REGION
4.7, 13/08/2010 6:16, 37.139, -33.005, 10, AZORES ISLANDS REGION
5.4, 13/08/2010 5:40, 37.078, -32.821, 10, AZORES ISLANDS REGION
4.7, 13/08/2010 5:23, 37.058, -32.809, 10, AZORES ISLANDS REGION
4.8, 13/08/2010 4:11, 36.915, -32.907, 11.2, AZORES ISLANDS REGION

earthquake.usgs.gov...

reply to post by muzzy


And another.. wonder what's going on here? Most of the islands there are volcanic is nature, I believe.

MAP 5.4 2010/08/13 07:58:49 36.931 -32.934 10.0 AZORES ISLANDS REGION

[edit on 13-8-2010 by MoorfNZ]

From Here

The Azores Triple Junction is a geologic triple junction where the boundaries of three tectonic plates intersect: the North American Plate, the Eurasian Plate and the African Plate. This triple junction is located along the Mid-Atlantic Ridge amidst the Azores islands, nearly due west of the Straits of Gibraltar. It is classed as a R-R-R triple junction, T type (for its shape), as it is an intersection of the Mid-Atlantic Ridge running north-south and the Terceira Rift which runs east-southeast.

Owing to its geodynamic environment, the region has been center of intense seismic activity, particularly along its tectonic boundaries on the Mid-Atlantic Ridge and Terceira Rift. Seismic events although frequent, usually tectonic or vulco-tectonic in nature, but in general low to medium intensities, occasionally punctuated by events of level 5 or greater on the Richter scale.[13][14] The most severe earthquake was registered in 1757, near Calheta on the island of São Jorge, which exceeded 7 on the Richter scale. In comparison, the 1522 earthquake, mentioned by Gaspar Frutuoso the historian, was only a magnitude 6.8, but a level 10 on the Mercalli scale[15], but responsible for the destruction of Vila Franca do Campo and landslides that may have killed less than 5000 of the inhabitants.

These quake magnitudes seem consistent for that spot, so it doesn't seem too abnormal. It's earth. There are quakes.

I don't recall seeing as many consecutive quakes there in such a short period. In fact, looking at the seismic history on USGS there haven't been many there at all this year. Even the activity from 1990 isn't that crowded.

neic.usgs.gov...

Originally posted by MoorfNZ
Even the activity from 1990 isn't that crowded.

It doesn't look as crowded as some other places no, but sheesh, that's a heck of a lot of quakes since 1990. I think you pretty much just answered your own question. These are occurring right on the plate boundaries, and as the other multitudes of quakes clearly show, quakes all up and down that rift are normal.

Since there hasn't been many there so far this year, consider this Mother Nature "catching up."

Originally posted by TrueAmerican

Originally posted by MoorfNZ
Even the activity from 1990 isn't that crowded.

It doesn't look as crowded as some other places no, but sheesh, that's a heck of a lot of quakes since 1990. I think you pretty much just answered your own question. These are occurring right on the plate boundaries, and as the other multitudes of quakes clearly show, quakes all up and down that rift are normal.

Since there hasn't been many there so far this year, consider this Mother Nature "catching up."

We'll agree to disagree - I don't think that's a lot of quakes for the time period.... and it's no surprise they'd be on the plate boundaries.

Interesting they're increasing in mag, too.. (at least, to me!)

While the Azores Islands region is prone to quakes - this is unusual for this area. Appears to be a mini swarm.

MAP 4.8 2010/08/13 12:08:44 36.857 -32.983 10.0 AZORES ISLANDS REGION
MAP 4.8 2010/08/13 10:55:30 36.893 -32.991 10.0 AZORES ISLANDS REGION

3.2 2010/08/13 08:51:57 38.795N 122.811W 3.3 1 km ( 0 mi) SW of The Geysers, CA


Puterman or anyone else with outstanding graph skills, would you be so kind when you have a little time to post me a graph of the quakes at Clear Lake Volcanic Field (The Geysers, CA). It appears to me that the quakes are getting more intense of late. Thanking you in advance - oh - 20 years would be way cool.

Also, with Them - now that we are certain They are withholding data on quakes unless browbeaten, that must have an effect on the research, charts and graphs you are putting together.

I have this data fro the Azores. Does anyone know if the first two in the list are separate quakes of a difference in opinion between EMSC and USGS?

Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
13/08/2010 12:08:44,36.8566,-32.9833,4.80,10.00,Azores Islands region
13/08/2010 12:08:42,42.5800,-28.8500,4.20,15.00,AZORES ISLANDS REGION
13/08/2010 10:55:30,36.8931,-32.9910,4.80,10.00,Azores Islands region
13/08/2010 09:20:25,36.5500,-11.3800,2.40,26.00,AZORES-CAPE ST. VINCENT RIDGE
13/08/2010 07:58:49,36.9305,-32.9335,5.40,10.00,Azores Islands region
13/08/2010 06:28:13,37.0780,-32.9919,5.10,10.00,Azores Islands region
13/08/2010 06:16:29,37.1386,-33.0052,4.70,10.00,Azores Islands region
13/08/2010 05:40:48,37.0785,-32.8214,5.40,10.00,Azores Islands region
13/08/2010 05:23:26,37.0578,-32.8095,4.70,10.00,Azores Islands region
13/08/2010 04:11:04,36.9154,-32.9069,4.80,11.20,Azores Islands region
09/08/2010 12:24:27,40.5300,-29.2200,3.10,15.00,AZORES ISLANDS REGION

Edit to say: What I meant to say is they are both the same time (within 2 secs) but in different places.

[edit on 13/8/2010 by PuterMan]

reply to post by Anmarie96


The name Geysers is not in the 7 days listings. Can you give me some co-ordinates (latitude and longitude for TOP LEFT/BOTTOM RIGHT of the square to study) and then I will get a couple of decades of data for you.

Edit to say:
3.2 2010/08/13 08:51:57 38.795N 122.811W 3.3 1 km ( 0 mi) SW of The Geysers, CA

That was not UTC. It took me a minute or two to find it. Could folks please indicate if listings are NOT UTC. Thanks.

[edit on 13/8/2010 by PuterMan]