Quake Watch 2012

reply to post by Annee


Yay!!!!!!

I'm so glad and was hopeful everything would be cool.

Seeing it unfold for a few hours had me on edge!!! Lol

What can I say, my name speaks for itself... I felt like a mama bear nervous for her cubs.

reply to post by muzzy


What was the total quakes for California on Sunday??

Sorry, I'm confused with the revised numbers....

Thanks!!! Oh yeah... I bet you were busy on Sunday with Earthquake Report or were you asleep? Sometimes I forget we are not living in the same Country. Lol

Some issues are just plainly ignored; or is it purposeful not reported for some or other reason.
My simple mind does not know the answer; but I do a definate trend that make me a little worried.

That 7.xx quake on Sunday near El Salvador.
No tsunami reported, and alarms cancelled an hour or so later.

BUT: El Salvador Zoological Foundation reported large number of sea turtle egss destroyed by three waves with more than 30ft height ?? People injured too.

When you search for Tsunami the only reference I see was from David Walsh (Pacific Tsunami Center) stating a minor Tsunami of 10 cm registered. Last time I used a measuring tape there was a massive difference between 10 cm and 1,000 cm (30ft). 10 cm would not be noticed. 1,000 cm - yes that will injure people; at least.

El Salvador Tsunami 2012

reply to post by Aromaz


I think the cause of confusion is the
"at least three waves at least 30 feet high up the beach"
as in the sea came inland from the normal tide line 30ft, rather than the actual wave was 30ft high
thats how I read it anyway

That makes more sense, as it says 150 people were present, but only several injured. If it had been a 30' tsunami, it would have wiped out everyone, as it stated they were on the beach, collecting the eggs.

reply to post by MamaJ


not only it a different country with a different time zone,
but the data is in UTC, so when you ask how many quakes on Sunday? there can be many answers
Sunday UTC?, Sunday California Time?, Sunday East Coast time?, Sunday my time (NZST)?
Its Thursday 30th here now already, Sun is just coming up, cold and frosty.

In UTC time the number of quakes per day in the Brawley area were
26/08/2012 =236
27/08/2012 =210
28/08/2012 =67
29/08/2012 =30 (up to 17:42:23UTC)



ETA;
the first quake of the day is marked (UTC)

reply to post by Aromaz


www.elsalvador.com/mwedh/nota/nota_completa.asp?idCat=47673&idArt=7205721

Spanish language Associated Press release has more words and say 10 meters high, gives actual number(500 meters) for this quote from English version - "hundreds of feet up the beach"...

2 pieces of info apparently didn't make into English translated AP news -

A dehydrated Golfina turtle was rescued some 200 meters from sea, sent to a rescue center from El Salvador Zoological Foundation/Fundación Zoológica de El Salvador/Funzel.

A turtle incubation corral was destroyed, photo at link by El Salvador Zoological Foundation/Fundación Zoológica de El Salvador/Funzel.

The director of the turtle conservation program for the El Salvador Zoological Foundation says the 7.4-magnitude undersea quake sent at least three waves at least 30 feet high up the beach and destroyed thousands of nests and just-hatched turtles. It also washed up on about 150 people collecting eggs in order to protect them in special pens hundreds of feet up the beach. The waves injured three.

from Spanish, same paragraph

El director del Programa de Conservación de la Tortuga en la Fundación, Emilio León, recorrió la tarde del lunes la zona y dijo a que al menos tres olas de unos de 10 metros de altura arrastraron a unos 150 recolectores de huevos de tortugas hasta unos 500 metros en tierra. Tres personas fueron trasladadas a centros asistenciales.

JMA Seismic Intensity 5+

www.jma.go.jp/en/quake/20120830040907391-300405.html

04:05 JST 30 Aug 2012 Miyagi-ken Oki M5.7 5+

Occurred at (JST) Latitude(degree) Longitude(degree) Depth Magnitude
Region Name

04:05 JST 30 Aug 2012 38.4N 141.9E 60 km 5.7 Miyagi-ken Oki

geofon.gfz-potsdam.de/eqinfo/event.php?id=gfz2012qzua

F-E Region: Near East Coast of Honshu, Japan
Time: 2012-08-29 19:05:12.4 UTC
Magnitude: 5.4 (Mw)
Epicenter: 141.88°E 38.44°N
Depth: 57 km
Status: M - manually revised

www.emsc-csem.org/Earthquake/earthquake.php?id=283324

Magnitude mb 5.6
Region NEAR EAST COAST OF HONSHU, JAPAN
Date time 2012-08-29 19:05:11.0 UTC
Location 38.40 N ; 142.22 E
Depth 60 km
Distances 117 km E Sendai (pop 1,037,562 ; local time 04:05:11.3 2012-08-30)
81 km E Ishinomaki (pop 117,233 ; local time 04:05:11.3 2012-08-30)
73 km SE Kesennuma (pop 59,116 ; local time 04:05:11.3 2012-08-30)

Source parameters not yet reviewed by a seismologist

earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc000caec.php

* This event has been reviewed by a seismologist.

Magnitude 5.5
Date-Time

* Wednesday, August 29, 2012 at 19:05:11 UTC
* Thursday, August 30, 2012 at 04:05:11 AM at epicenter

Location 38.425°N, 141.888°E
Depth 53.7 km (33.4 miles)
Region NEAR THE EAST COAST OF HONSHU, JAPAN
Distances

* 90 km (56 miles) ENE (77°) from Sendai, Honshu, Japan
* 146 km (91 miles) ENE (58°) from Fukushima, Honshu, Japan
* 158 km (98 miles) SSE (155°) from Morioka, Honshu, Japan
* 361 km (224 miles) NNE (31°) from TOKYO, Japan

Location Uncertainty horizontal +/- 14.7 km (9.1 miles); depth +/- 6.3 km (3.9 miles)
Parameters NST=660, Nph=672, Dmin=387.4 km, Rmss=0.73 sec, Gp= 40°,
M-type=teleseismic moment magnitude (Mw), Version=7
Source

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

Event ID usc000caec

www.ceme.gsras.ru/cgi-bin/quake_state.pl?sta=20123251

2012-08-29 19:05:11.2 38.63 141.88 60 38 - 5.9/18 4.5-5 Near east coast of Honshu, Japan

date= 29-Aug-2012 19:05:11.2 lat= 38.63 lon= 141.88
depth= 60km mb: 5.9/18

Shallow 4.1 quake in LA

M4.1 - 3km ENE of Yorba Linda, California
2012-08-29 20:31:00 UTC

USGS

I know that the Virgin Islands has regular quakes, but it seems to be doing the SOCAL dance and heating up, don't y'all think?

Last 7 days has 117 quakes with the total so far for the month being 140

Almost 50% up this month on the monthly average of around 96 events per month for this year (778 total).

Area produced two tsunamis in 1878 from a 7.5mag followed by a 6.1 aftershock.

On the afternoon of November 18, 1867, a magnitude 7.5 earthquake occurred in the Anegada trough, located between the US Virgin Islands of St. Croix, and St. Thomas. The earthquake actually consisted of two shocks, separated by ten minutes. These shocks generated two tsunami waves that were recorded at several Island locations across the eastern Caribbean region, most notably on the Islands of St. Thomas and St. Croix.

The first tsunami wave struck the town of Charlotte Amalie, on the island of St. Thomas, approximately 10 minutes after the first shock, and the second wave approximately 10 minutes after the second shock. Both waves struck the harbor at Charlotte Amalie first as a large recession of water, followed by a bore, which eyewitness accounts describe as a 4.5 to 6.1 meter wall of water. At the southern point of Water Island, located approximately four kilometers from Charlotte Amalie, the bore was reportedly 12.1 meters high! The waves destroyed many small boats anchored in the harbor, leveled the town's iron warf, and either flooded out or destroyed all buildings located along the waterfront area. The waves also damaged a United States Navy ship De Soto, that happened to be anchored in the harbor at the time of the event. The tsunami produced an estimated 2.4 meters of runup at Charlotte Amalie, and a maximum 75 meter inland inundation.

Fredriksted St. Croix was struck by two large tsunami waves, each approximately 7.6 meters high, according to eyewitness accounts. These waves caused severe damage along the waterfront, washing several wooden houses and other structures a considerable distance inland. The waves destroyed many of the smaller boats anchored in the harbor, and beached a large United States Navy ship, the Monongahela (see photo below). A total of five people died as a result of the tsunami. Eyewitness accounts from Frederiksted indicate that the water withdrew from the harbor almost immediately after the earthquake, which suggests that the first wave to strike here might have been a local tsunami produced by a submarine landslide.

Reports from Christiansted, St. Croix, indicate that the tsunami inundated an area up to 91 meters inland. The greatest damage here occurred at Gallows Bay, where the waves destroyed 20 houses and beached many boats.

Just seems that plenty of known trouble spots are 'swarming' IMHO.

06:06 30 August
M5.6 quake jolts Miyagi Pref., no tsunami warning issued

TOKYO, Aug. 30, Kyodo

english.kyodonews.jp/news/2012/08/179316.html

An earthquake with a preliminary magnitude of 5.6 jolted Miyagi Prefecture in northeastern Japan early Thursday, the Japan Meteorological Agency said, issuing no tsunami warning.

The 4:05 a.m. quake measured upper 5 on the Japanese seismic intensity scale of 7 in the northern and central parts of the prefecture, lower 5 in southern Miyagi and 4 in parts of Iwate Prefecture, the agency said.

There were no immediate reports of major injuries in Miyagi Prefecture, according to the prefectural government and police.

No new abnormalities have been confirmed at the Fukushima Daiichi and Daini nuclear power plants in Fukushima Prefecture neighboring Miyagi, Tokyo Electric Power Co. said. The Miyagi prefectural police said no abnormalities have been confirmed at the local Onagawa nuclear power plant, citing Tohoku Electric Power Co.

The quake's focus was located off the coast of Miyagi at a depth of about 60 kilometers, the weather agency said. The agency initially put the quake's magnitude at 5.7.

East Japan Railway Co. said it has decided to suspend operations early Thursday in some sections on Tohoku Main, Senseki and Ishinomaki lines for safety checks.

Meanwhile, an earthquake with a preliminary magnitude of 4.2 hit Ibaraki, Tochigi, Gunma and Saitama prefectures at 4:17 a.m., measuring 3 on the Japanese scale.

The focus of the later quake was in the southern part of Ibaraki Prefecture at a depth of about 50 km, according to the agency.

Copyright 2012 Kyodo News

reply to post by wujotvowujotvowujotvo


Update to above
---


09:27 30 August
M5.6 quake jolts Miyagi Pref., no tsunami warning issued

TOKYO, Aug. 30, Kyodo

english.kyodonews.jp/news/2012/08/179326.html

An earthquake with a preliminary magnitude of 5.6 jolted Miyagi Prefecture in northeastern Japan early Thursday, the Japan Meteorological Agency said, issuing no tsunami warning.

There were no immediate reports of major injuries, local officials said. No abnormalities have been confirmed at three nuclear power plants in the region -- Onagawa in Miyagi Prefecture, and Fukushima Daiichi and Daini in Fukushima Prefecture, south of Miyagi, their operators said.

The 4:05 a.m. quake originated in the Pacific off the coast of Miyagi at a depth of about 60 kilometers and measured upper 5 on the Japanese seismic intensity scale of 7 in the northern and central parts of the prefecture, the agency said.

Two men suffered minor injuries in Sendai and Natori cities in Miyagi Prefecture after being hit by objects falling from shelves, according to firefighters.

East Japan Railway Co. suspended operations early Thursday on some sections on the Tohoku Main, Senseki and Ishinomaki lines for safety checks. But they have now returned to normal.

Meanwhile, an earthquake with a preliminary magnitude of 4.2 hit Ibaraki, Tochigi, Gunma and Saitama prefectures at 4:17 a.m., measuring 3 on the Japanese scale.

The focus of the later quake was in the southern part of Ibaraki Prefecture at a depth of about 50 km, according to the agency.

The two quakes are apparently aftershocks of the devastating quake that hit the northeastern region in March 2011, the agency said.

Copyright 2012 Kyodo News

They just reported on the news, a 3.0 off Vancouver Island, about 3:20pm. Hardly worth mentioning I guess.

reply to post by AlexanderM


I think any earthquake in that monster of a region is worth mentioning!

2nd.

reply to post by AlexanderM


Strange that. I have just finished the import section for Canadian quakes and the last one was

2012/08/29 22:20:33 48.5 -123.63 26.5 3 No 20 km WNW of Victoria,BC

Natrual Resources Canada: Last 30 days

I wonder if they are always running behind?

Thursday, August 30, 2012
Finding Active Faults Tall Order For Nuclear Power Firms

e.nikkei.com/e/app/fr/gateway/rss_news.aspx?URL=/e/ac/tnks/Nni20120830D29HH505.htm

TOKYO (Nikkei)--As a national debate rages over the restart of Japan's nuclear power plants, a big question is whether some of them sit atop seismically active faults.

It has also come to light that when some nuclear power plants were built, the existence of active faults running under them may have been overlooked or ignored.

The Nuclear and Industrial Safety Agency (NISA), which is affiliated with the Ministry of Economy, Trade and Industry, is taking a second look at all nuclear power plants in the country. But it is extremely difficult to determine whether faults are active or not, even with state-of-the-art equipment.

After it was revealed that their might be an active fault running under Hokuriku Electric Power Co.'s (9505) Shika nuclear power plant in Ishikawa Prefecture, NISA held a meeting Aug. 10 to try and identify all such cracks in the earth's crust beneath nuclear power plants in the country. At the meeting, utilities insisted the faults directly below a number nuclear power plants are inactive, citing building blueprints and other data, while some experts said some of them may be active.

Whose Fault

NISA decided on Aug. 24 to order additional on-site inspections of Kansai Electric Power Co.'s (9503) Mihama nuclear power plant in Fukui Prefecture and the Japan Atomic Energy Agency'sMonju prototype fast-breeder reactor in the same prefecture because they may be sitting in active fault zones.

NISA had earlier issued inspection orders for four other plants, including Hokuriku Electric Power's Shika plant.

NISA has had to scrutinize the locations of all nuclear plants amid growing public concerns about their safety in the wake of last year's meltdown at Tokyo Electric Power Co.'s (9501) Fukushima Daiichi plant.

The agency began its investigation with an expert review of the data compiled at the time the plants were built. That review has set off an earthquake of its own. The experts are split over whether there are active faults beneath some nuclear power plants.

At a NISA meeting in July, for example, Toshifumi Imaizumi, a professor at Tohoku University, said he could not understand why construction of the Shika plant was approved in the first place. Imaizumi pointed out that photos taken in 1987, when Hokuriku Electric Power applied for permission to build the plant, show signs of an active fault. But the utility says the crack beneath the Shika facility is not active, and some experts agree.

Falling Through Cracks

Identifying seismically active faults depends largely on the judgment of these experts. Chemical analysis also provides a clue as to when faults have moved in the past. But determining whether faults are active is as much art as science.

At the NISA meeting on Aug. 10, many experts acknowledged the problem and agreed they had no choice but to conduct a thorough investigation and make a determination on whether faults are active or not based on currently available information.

In the past, power companies took advantage of these ambiguities, asking experts nicknamed "active fault cutters" to ascertain whether the faults below construction sites were active or not. "Cutters" refers to those who tend to underestimate the length of faults.

Japan's small landmass does not leave much room for nuclear power plants. Furthermore, power companies need permission from local governments to build them, making it even harder to find sites. That gave the utilities an incentive to rely on active fault cutters to reduce the risk of such faults being found.

Further complicating the problem is a significant change in the attitude of many seismologists and nuclear experts in the wake of last year's Great East Japan Earthquake, which triggered the crisis in Fukushima.

If the disaster proved anything, it is that the "expert consensus" is sometimes wrong. Researchers had their eyes opened anew by the quake to the uncertainty of seismology. That has made categorical pronouncements on safety nearly as risky as the temblors themselves..

-- Translated from an article by Nikkei staff writers Shigehisa Furuya and Tomoyuki Kawai

(The Nikkei, Aug. 29 morning edition)

Copyright © Nikkei Inc

geofon.gfz-potsdam.de/eqinfo/event.php?id=gfz2012rbex

F-E Region: Jan Mayen Island Region
Time: 2012-08-30 13:43:25.0 UTC
Magnitude: 6.6
Epicenter: 10.73°W 71.58°N
Depth: 10 km
Status: C - confirmed

--

GFZ Event gfz2012rbex
12/08/30 13:43:27.23
Jan Mayen Island Region
Epicenter: 71.31 -10.73
MW 6.7

GFZ MOMENT TENSOR SOLUTION
Depth 20 No. of sta: 45

www.emsc-csem.org/Earthquake/earthquake.php?id=283412

Magnitude Mw 6.6
Region JAN MAYEN ISLAND REGION
Date time 2012-08-30 13:43:23.0 UTC
Location 71.52 N ; 10.61 W
Depth 2 km
Distances 1861 km NW Stockholm (pop 1,253,309 ; local time 15:43:23.1 2012-08-30)
944 km NE Reykjavík (pop 113,906 ; local time 13:43:23.1 2012-08-30)
715 km N Akureyri (pop 16,563 ; local time 13:43:23.1 2012-08-30)

Source parameters reviewed by a seismologist

earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc000cb69.php

* This event has been reviewed by a seismologist.

Magnitude 6.8
Date-Time

* Thursday, August 30, 2012 at 13:43:24 UTC
* Thursday, August 30, 2012 at 12:43:24 PM at epicenter
* Time of Earthquake in other Time Zones

Location 71.461°N, 10.919°W
Depth 9.9 km (6.2 miles)
Region JAN MAYEN ISLAND REGION
Distances 93 km (57 miles) NW of Olonkinbyen, Svalbard and Jan Mayen
709 km (440 miles) NNE of Akureyri, Iceland
939 km (583 miles) NNE of Reykjavik, Iceland
942 km (585 miles) NNE of Kopavogur, Iceland
Location Uncertainty horizontal +/- 13.4 km (8.3 miles); depth +/- 2.7 km (1.7 miles)
Parameters NST=651, Nph=658, Dmin=416.3 km, Rmss=1.07 sec, Gp= 40°,
M-type=(unknown type), Version=B
Source

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

Event ID usc000cb69

www.ceme.gsras.ru/cgi-bin/quake_state.pl?sta=20123257

2012-08-30 13:43:23.3 71.40 -10.85 10 50 6.5/24 6.2/21 9-9.5 Jan Mayen Island region

date= 30-Aug-2012 13:43:23.3 lat= 71.4 lon= -10.85
depth= 10km ms: 6.5/24 mb: 6.2/21

geofon.gfz-potsdam.de/eqinfo/event.php?id=gfz2012rbfe

Time: 2012-08-30 13:51:04.0 UTC
Magnitude: 5.4 (mb)
Epicenter: 8.73°W 70.97°N
Depth: 10 km
Status: M - manually revised

www.emsc-csem.org/Earthquake/earthquake.php?id=283421

Magnitude mb 5.3
Region JAN MAYEN ISLAND REGION
Date time 2012-08-30 13:51:05.0 UTC
Location 71.00 N ; 7.89 W
Depth 10 km
Distances 1748 km NW Stockholm (pop 1,253,309 ; local time 15:51:05.5 2012-08-30)
963 km NE Reykjavík (pop 113,906 ; local time 13:51:05.5 2012-08-30)
722 km NE Akureyri (pop 16,563 ; local time 13:51:05.5 2012-08-30)

Source parameters reviewed by a seismologist

earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc000cb6u.php

* This event has been reviewed by a seismologist.

Magnitude 5.2
Date-Time

* Thursday, August 30, 2012 at 13:51:06 UTC
* Thursday, August 30, 2012 at 12:51:06 PM at epicenter

Location 70.927°N, 8.055°W
Depth 12.3 km (7.6 miles)
Region JAN MAYEN ISLAND REGION
Distances

* 953 km (592 miles) NNE (32°) from REYKJAVIK, Iceland

Location Uncertainty horizontal +/- 15.4 km (9.6 miles); depth +/- 4.7 km (2.9 miles)
Parameters NST=269, Nph=269, Dmin=515.4 km, Rmss=1.29 sec, Gp= 43°,
M-type=body wave magnitude (Mb), Version=5
Source

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

Event ID usc000cb6u

www.ceme.gsras.ru/cgi-bin/quake_state.pl?sta=20123258

2012-08-30 13:51:04.8 71.24 -7.99 10 18 - 5.3/10 6-6.5 Jan Mayen Island region

date= 30-Aug-2012 13:51:04.8 lat= 71.24 lon= -7.99
depth= 10km mb: 5.3/10

Looks like they had two:

Thursday August 30 2012, 13:51:08 UTC 19 minutes ago Jan Mayen Island Region 5.5 147.0 CSEM-EMSC
Thursday August 30 2012, 13:47:53 UTC 23 minutes ago France 4.1 16.0 CSEM-EMSC Feed
Thursday August 30 2012, 13:43:48 UTC 27 minutes ago Western Turkey 3.1 15.0 CSEM-EMSC
Thursday August 30 2012, 13:43:24 UTC 27 minutes ago Jan Mayen Island region 6.6 8.6 USGS
Thursday August 30 2012, 13:43:23 UTC 27 minutes ago Jan Mayen Island Region 6.5 2.0 CSEM-EMSC

reply to post by kennvideo


They only seem to have had 2 x Mag 6 on GFZ Potsdam as far as I can see. Odd?

Prov,Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
gfz,2012-08-30 13:51:08, 71.170, -8.140, 6.3, 10.0, Jan Mayen Island Region.
gfz,2012-08-30 13:43:25, 71.580, -10.730, 6.6, 10.0, Jan Mayen Island Region.
usgs,2012-08-30 13:43:24, 71.461, -10.723, 6.6, 8.6, Jan Mayen Island Region
emsc,2012-08-30 13:43:23, 71.519, -10.611, 6.6, 2.0, Jan Mayen Island Region