Buoys 21401 (Kuril Islands), 43413 and 46419 in event mode - M7.9 Guerrero, Mexico

21401, 250 NM Southeast of Iturup Island now in tsunami event mode.

Iturup is the northernmost island in the southern Kuril/Chishima islands.

In 1963, the area experienced a M8.5 eq, in 2006 a M8.3 and in 2007 a M8.1.

Per Wikipedia, "The Kuril Islands form part of the island arc formed above the subduction zone, where the Pacific Plate is being subducted beneath the Eurasian Plate. This convergent boundary has been the site of many large megathrust earthquakes."

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Recent earthquakes in the region:

http://earthquaketrack.com/r/kuril-islands/recent

Biggest earthquakes in the region:

http://earthquaketrack.com/r/kuril-islands/biggest


[Added by the Moderation]

Comment by Recall15 ( http://poleshift.ning.com/profiles/blogs/earthquakes-worldwide)

USGS said it was 7.9 at Guerrero MX:

Magnitude 7.9 - GUERRERO, MEXICO
2012 March 20 18:02:53 UTC

From:

http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/pt1208000...

 

Comment by Saanvi ( http://poleshift.ning.com/profiles/blogs/earthquakes-worldwide)

March 20, 2012 — A major earthquake has hit Oaxaca, Mexico.

The U.S. Geological Survey (USGS) has reported a 7.6-magnitude earthquake in Oaxaca, Mexico, about 200 km east of Acapulco.

The quake was originally thought to be a 7.9 but has since been downgraded. It struck the area at 18:02 GMT.

http://www.theweathernetwork.com/news/storm_watch_stories3&stor...

 

http://www.ndbc.noaa.gov/station_page.php?station=43413&type=2&...

Plot of Water Column Height Data for Station 43413

-- Plot of 15-second data --
Plot of Water Column Height 15-second Data for Station 43413


Views: 3069

Tags: 21401, 43413, 46419, Buoys, Guerrero, M7.9, Mexico

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Comment by Fea on March 28, 2012 at 5:04pm

Current activity and from 25 Feb to present AND a Google Earth screen shot of the buoy's location on a plate boundary.  The yellow dots represent EQs in the past week.

Comment by Fea on March 28, 2012 at 1:11am

While the buoy has been in near continuous tsunami event mode since 25 February, we have not seen activity like this...

Comment by Fea on March 27, 2012 at 4:36pm

46419 current activity

Comment by Malou (Marie Louise) Geleff on March 27, 2012 at 3:09am

https://www.facebook.com/pages/National-Data-Buoy-Center/1285380338... :

"..National Data Buoy Center You are correct, it is instrument problems. The pressure sensor used on those systems is particularly sensitive to pick up the millimeter changes in the water column height. When this problem frequently occurs on the tsunami system, it is usually due to some sort of noise being introduced into the system..."

"usually...some noise"  hmmm, like "mysterious booms" and such.. sorry, couldn´t help that one..

Comment by Recall 15 on March 27, 2012 at 2:51am

Indeed, two events on buoy 46419 on March 26

From Direct Link:

http://www.ndbc.noaa.gov/station_page.php?station=46419

Comment by Howard on March 27, 2012 at 2:11am

Several more large displacements at Station 46419:

Comment by Malou (Marie Louise) Geleff on March 26, 2012 at 8:13pm

A month´s worth of quakes @ Kuril Islands from the emsc :

2012-03-25 13:41:02.0 47.90 N 153.80 E 80    4.8 KURIL ISLANDS
2012-03-19 10:23:20.0 43.60 N 146.04 E 107  4.6 KURIL ISLANDS
2012-03-17 09:09:59.0 49.62 N 155.53 E 43    4.5 KURIL ISLANDS
2012-03-16 00:38:06.0 49.29 N 156.09 E 30    5.5 KURIL ISLANDS
2012-03-12 12:32:48.0 45.29 N 147.64 E 126  5.6 KURIL ISLANDS
2012-03-10 18:33:17.0 43.11 N 148.14 E 2     5.1 EAST OF KURIL ISLANDS
2012-03-10 18:33:21.0 43.33 N 148.01 E 30   5.0 EAST OF KURIL ISLANDS
2012-03-10 07:15:44.0 50.61 N 157.13 E 95   4.6 KURIL ISLANDS
2012-03-06 22:33:19.0 47.22 N 154.16 E 47   5.1 KURIL ISLANDS
2012-03-06 03:16:38.1 50.31 N 154.34 E 240 4.1 KURIL ISLANDS
2012-03-05 03:33:20.0 46.76 N 153.56 E 60   4.9 KURIL ISLANDS
2012-03-04 16:26:23.6 49.25 N 155.65 E 67   4.6 KURIL ISLANDS
2012-03-03 07:25:26.5 46.40 N 150.91 E 160 3.8 KURIL ISLANDS
2012-02-25 08:47:50.0 49.39 N 155.93 E 47   4.9 KURIL ISLANDS
2012-02-25 16:51:57.0 49.19 N 156.01 E 15   5.2 KURIL ISLANDS
2012-02-25 08:47:50.0 49.39 N 155.93 E 47   4.9 KURIL ISLANDS
2012-02-25 06:18:18.0 49.19 N 155.97 E 157 5.0 KURIL ISLANDS
2012-02-25 06:15:15.0 49.21 N 155.96 E 40   5.2 KURIL ISLANDS

only 2 are below 4.5

http://www.emsc-csem.org/Earthquake/   

Comment by Fea on March 26, 2012 at 5:00pm

46419 current activity

Comment by Fea on March 25, 2012 at 10:48pm

46419 has now been intermittently active for one month.  Note the approximately 70 meter range in buoy heights.

Comment by Recall 15 on March 25, 2012 at 3:19pm

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