Quake Watch 2011

Originally posted by Tasty Canadian
But does it look volcanic????

Anybody????

edit on 19-10-2011 by Tasty Canadian because: (no reason given)

Earthquakes in Hawai`i are closely linked to volcanism. They are an important part of the island-building processes that have shaped the Island of Hawai`i and the other Hawaiian Islands. Thousands of earthquakes occur every year beneath the Island of Hawai`i.

Eruptions and magma movement within the presently active volcanoes (Kilauea, Mauna Loa and Lo`ihi) are usually accompanied by numerous small earthquakes. They originate in regions of magma storage or along the paths that magma follows as it rises and moves prior to eruption. These are loosely termed volcanic earthquakes.

Many other earthquakes, including the largest ones, occur in areas of structural weakness at the base of Hawai`i's volcanoes or deep within the Earth's crust beneath the island. These are referred to as tectonic earthquakes. In the past 150 years, several strong tectonic earthquakes (magnitude 6 to 8) caused extensive damage to roads, buildings, and homes, triggered local tsunami, and resulted in loss of life. The most destructive earthquake in Hawai`i's history occurred on April 2, 1868, when 81 people lost their lives. With a magnitude of 7.9 and a maximum intensity of XII, this destructive earthquake destroyed more than a hundred homes and generated a 15-m high tsunami along Kilauea's south coast.

hvo.wr.usgs.gov...

The 4.5 was on the northwest side of the big island. Might be tectonic, seeing as there are clearly aftershocks.

Seems that the Hawaii quakes are getting some attention:

Hawaii quakes today, the Associated Press

reply to post by TrueAmerican

I'm not sure that I agree with you there True. There have been 23 small quakes since then and in quick succession....I think it's harmonic. Magma on the move. Look at where it started and where it is now.

Are the any online seismographs to watch for Hawaii?
Ma halo

Originally posted by Tasty Canadian
reply to post by TrueAmerican

 

I'm not sure that I agree with you there True. There have been 23 small quakes since then and in quick succession....I think it's harmonic. Magma on the move. Look at where it started and where it is now.

edit on 19-10-2011 by Tasty Canadian because: (no reason given)

Well that's fine, but considering the depth of these quakes, all at ~ 17km, and the presence of aftershocks from a main shock, I am sticking with tectonic. It appears a small section of a fault moved, with accompanying aftershocks. This happened in the Mauna Kea volcanic field, which is supposedly dormant:

en.wikipedia.org...

I checked the epicenters, which are all very close, and very well constrained by multiple stations, so the error ellipse is very small (+ or - .9 km). I have expanded monitoring to include some Hawaii Volcano Observatory stations (EHZ). Things appear to have subsided for the moment. I wouldn't go trumpeting the end of the world just yet.

reply to post by TrueAmerican


no...no trumpets here...not even a piccolo...lol...but if there's one place where the magma moves around a lot, it's Hawaii. And even when it does, doesn't mean a volcano is imminent. This just looks so different than other swarms.

Amplitude Reference (AR) Hawaii

AR 1: 3.3 about 150 microns/sec IU.POHA BHZ
AR 2: 4.5 about 2.2 mm/s IU.POHA BHZ- 4.5 about 9.5 mm/s at HV.WAID EHZ
AR 3: 2.5 about 300 micron/sec HV.WAID EHZ

From time to time I am going to post Amplitude References for a given area. This way when a new one happens in that area, GEE users can get an idea of the magnitude before it is reported. Note the different types of stations and their amplitudes though, cause it makes a difference. (See the 4.5 above and the difference in amplitude at BHZ and EHZ stations. Those stations are close to the same distance from epicenter of the 4.5.)

And another one in Hawaii...3.5.
Why does most of the good stuff happen between 1 & 2 AM my time??? I'm getting too old to stay up late, then get up early!!!

Here are a couple links for helicorders & web cams:

tux.wr.usgs.gov...

volcanoes.usgs.gov...

volcanoes.usgs.gov...

So the big island is really 'rocking'...

MAP 2.6 2011/10/20 06:04:29 19.887 -155.544 16.6 20 km ( 13 mi) SE of Waimea, HI
MAP 2.4 2011/10/20 04:42:08 19.884 -155.542 17.7 21 km ( 13 mi) SE of Waimea, HI
MAP 2.0 2011/10/20 04:33:29 19.325 -155.124 5.9 16 km ( 10 mi) S of Fern Forest, HI
MAP 1.9 2011/10/20 04:32:04 19.883 -155.541 19.2 21 km ( 13 mi) SE of Waimea, HI
MAP 3.7 2011/10/20 04:17:33 19.304 -155.221 9.9 16 km ( 10 mi) S of Volcano, HI
MAP 2.2 2011/10/20 04:12:08 19.875 -155.539 16.6 22 km ( 13 mi) SE of Waimea, HI
MAP 2.5 2011/10/20 03:21:26 19.871 -155.549 14.3 21 km ( 13 mi) SE of Waimea, HI
MAP 2.7 2011/10/20 03:16:08 19.881 -155.546 19.3 21 km ( 13 mi) SE of Waimea, HI
MAP 2.3 2011/10/20 02:14:31 19.844 -155.546 14.8 24 km ( 15 mi) SE of Waimea, HI
MAP 2.0 2011/10/20 01:48:54 19.880 -155.548 17.6 21 km ( 13 mi) SE of Waimea, HI
MAP 2.2 2011/10/20 01:42:19 19.895 -155.554 17.2 19 km ( 12 mi) SE of Waimea, HI
MAP 2.3 2011/10/20 01:29:13 19.881 -155.547 17.0 21 km ( 13 mi) SE of Waimea, HI
MAP 2.5 2011/10/20 01:24:05 19.875 -155.537 17.9 22 km ( 13 mi) SE of Waimea, HI
MAP 2.1 2011/10/20 01:22:20 19.890 -155.545 17.6 20 km ( 12 mi) SE of Waimea, HI
MAP 2.7 2011/10/20 01:11:01 19.863 -155.533 17.0 23 km ( 14 mi) SE of Waimea, HI
MAP 2.1 2011/10/20 01:04:37 19.880 -155.545 18.0 21 km ( 13 mi) SE of Waimea, HI
MAP 3.3 2011/10/20 00:59:00 19.884 -155.539 19.5 21 km ( 13 mi) SE of Waimea, HI
MAP 2.4 2011/10/20 00:57:03 19.855 -155.542 14.8 23 km ( 14 mi) SE of Waimea, HI
MAP 2.6 2011/10/20 00:48:01 19.881 -155.541 16.7 21 km ( 13 mi) SE of Waimea, HI
MAP 2.4 2011/10/20 00:45:56 19.845 -155.546 14.7 24 km ( 15 mi) SE of Waimea, HI
MAP 2.8 2011/10/20 00:45:17 19.879 -155.545 15.2 21 km ( 13 mi) SE of Waimea, HI
MAP 2.1 2011/10/20 00:33:40 19.886 -155.548 18.1 20 km ( 12 mi) SE of Waimea, HI
MAP 1.7 2011/10/20 00:31:52 19.858 -155.527 16.2 24 km ( 15 mi) SE of Waimea, HI
MAP 2.0 2011/10/20 00:30:47 19.838 -155.408 16.7 23 km ( 14 mi) S of Paauilo, HI
MAP 2.5 2011/10/20 00:27:44 19.878 -155.536 18.6 21 km ( 13 mi) SE of Waimea, HI
MAP 2.4 2011/10/20 00:25:25 19.874 -155.547 16.3 21 km ( 13 mi) SE of Waimea, HI
MAP 3.1 2011/10/20 00:21:04 19.871 -155.543 15.7 22 km ( 13 mi) SE of Waimea, HI
MAP 2.0 2011/10/20 00:18:11 19.865 -155.522 16.9 24 km ( 15 mi) SE of Waimea, HI
MAP 1.9 2011/10/20 00:16:15 19.883 -155.541 17.8 21 km ( 13 mi) SE of Waimea, HI
MAP 1.9 2011/10/20 00:13:52 19.868 -155.523 15.8 23 km ( 14 mi) SE of Waimea, HI
MAP 3.6 2011/10/20 00:12:34 19.880 -155.528 18.4 22 km ( 14 mi) SE of Waimea, HI
MAP 4.5 2011/10/20 00:10:04 19.883 -155.532 18.8 21 km ( 13 mi) SE of Waimea, HI

They just had another.....

I agree with TA that it appears more tectonic at the moment, given the depth. Time will tell. Interesting though.

Let me know when the number passes 2000 events

[color=2B65EC]Re-inflation of Mauna Loa's shallow magma storage reservoirs started immediately following the most recent eruption in 1984, then turned to deflation for almost a decade. In mid-2002, inflation started again, just after a brief swarm of deep long-period (LP) earthquakes. A more intense swarm of (more than? about?) 2,000 deep LP earthquakes occurred in late 2004, immediately preceding a dramatic increase in inflation rate. Inflation slowed again in 2006, ceased altogether in late 2009, and resumed slowly in late 2010.

Rising gradually to more than 4 km above sea level, Mauna Loa is the largest volcano on our planet. Its long submarine flanks descend to the sea floor an additional 5 km, and the sea floor in turn is depressed by Mauna Loa's great mass another 8 km. This makes the volcano's summit about 17 km (56,000 ft) above its base! The enormous volcano covers half of the Island of Hawai`i and by itself amounts to about 85 percent of all the other Hawaiian Islands combined.

Mauna Loa is among Earth's most active volcanoes, having erupted 33 times since its first well-documented historical eruption in 1843. Its most recent eruption was in 1984

volcanoes.usgs.gov...

A BIG 9.1 in Libya.Muammar Gaddafi CAPTURED

reply to post by diamondsmith


Do you really mean 9. EQ in Libyia? Or that Gadaffis capture is a whopper?

reply to post by antar
Gadhafi's caapture is like 9.1in Libya for the US.Who's next?Ahmadinejad?

Mag 4.7, Southern Texas. (!!) (See notes below: downgraded to 4.6; depth slightly revised. I'm leaving my first data page from USGS intact for reference purposes.)

Magnitude 4.7 - SOUTHERN TEXAS
2011 October 20 12:24:41 UTC

* Details
* Maps
* Tsunami

Earthquake Details

* This event has been reviewed by a seismologist.

Magnitude 4.7 (Preliminary magnitude — update expected within 15 minutes)
Date-Time

* Thursday, October 20, 2011 at 12:24:41 UTC
* Thursday, October 20, 2011 at 07:24:41 AM at epicenter

Location 28.781°N, 98.025°W
Depth 5 km (3.1 miles) set by location program
Region SOUTHERN TEXAS
Distances

* 15 km (9 miles) N (351°) from Pawnee, TX
* 17 km (10 miles) SW (225°) from Karnes City, TX
* 17 km (11 miles) WSW (258°) from Kenedy, TX
* 49 km (31 miles) ESE (115°) from Pleasanton, TX
* 88 km (55 miles) SSE (147°) from San Antonio, TX
* 462 km (287 miles) SSW (195°) from Dallas, TX

Location Uncertainty Error estimate not available
Parameters NST= 19, Nph= 19, Dmin=137.4 km, Rmss=0.94 sec, Gp=112°,
M-type=local magnitude (ML), Version=1
Source

* West Coast and Alaska Tsunami Warning Center/NOAA/NWS

Event ID at00ltd6h5

Source: USGS

Pretty shallow quake, that one. I expect there'll be a fair few "felt" reports coming in pdq...

By the way, much fracking round there?

OH -- EDIT: Now downgraded to a mag 4.6. Depth changed slightly from 5.0 to 5.1 km as well:

Magnitude 4.6 - SOUTHERN TEXAS
2011 October 20 12:24:40 UTC

* Details
* Maps
* Tsunami

Earthquake Details

* This event has been reviewed by a seismologist.

Magnitude 4.6
Date-Time

* Thursday, October 20, 2011 at 12:24:40 UTC
* Thursday, October 20, 2011 at 07:24:40 AM at epicenter

Location 28.806°N, 98.147°W
Depth 5 km (3.1 miles)
Region SOUTHERN TEXAS
Distances

* 22 km (14 miles) NW (321°) from Pawnee, TX
* 23 km (14 miles) SSW (213°) from Falls City, TX
* 26 km (16 miles) WSW (249°) from Karnes City, TX
* 80 km (50 miles) SSE (154°) from San Antonio, TX
* 463 km (288 miles) SSW (197°) from Dallas, TX

Location Uncertainty horizontal +/- 19.3 km (12.0 miles); depth +/- 3.1 km (1.9 miles)
Parameters NST= 23, Nph= 23, Dmin=142.5 km, Rmss=0.81 sec, Gp=112°,
M-type=body wave magnitude (Mb), Version=6
Source

* Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)

Event ID usb0006alu

Note: Same source (USGS) and link as posted above within this post!

Mike

reply to post by JustMike
Very strange if you look on satellite map the pin point of the EQ in Texas was on a strange facilityquakes.globalincidentmap.com...

reply to post by JustMike


WOW!

I was wondering that myself...will research to see if there is indeed fracking going on...does make you wonder! I am also wondering how often they have EQ's because I have not noticed any there in the last year and half.

The US has been too busy for me...eq wise that is. This is a conspiracy site so I will share a weird idea that just popped into my head. What IF the nations today can induce an EQ on another? I know it sounds crazy but I remember an old video/speech from a politician talking about where we were going and this was mentioned. Controlling climate and the like....just thinking crazily out loud here.

reply to post by diamondsmith

What "strange facility"? Could you please elaborate? I'm sure we'd like more detail. That map you referenced doesn't show me a lot, to be honest.

Originally posted by diamondsmith
reply to post by JustMike

 

Very strange if you look on satellite map the pin point of the EQ in Texas was on a strange facilityquakes.globalincidentmap.com...

4.7 in TX 10/20 12:24 pm.

reply to post by MamaJ

I'm hoping that one of our members will have some data on previous quakes in that are. I also don't recall many there in the past few years but I'd like to see some data of their locations and mags.

Re other countries and ability to cause quakes, etc etc. Yes, that's been discussed here on ATS in some threads. I'm dubious about it as the energies involved would need to be pretty massive. Okay, it's theoretically possible I guess, but how they'd achieve such an effect without massively interfering with power transmission and communications infrastructures is beyond me.

Mike