Quake Watch 2011

Quake-Nerd-Expertise needed:

We believe we may be on the verge of seeing another degree of intensity in the Japanese aftershocks occurring off the east coast of Honshu, Japan. The depth of the quakes and tremors is increasing which could indicate more subduction pressures along the Pacific plate and may suggest the likelihood of a tension snap-effect could be building. From 9:56 to 13:14 hours, the average depth of seven quakes was 29 km, but from 13:14 to 23.00 hours, the average depth of the last seven quakes is now 58 km- the depth of rattling has nearly doubled. Tension is still also recoiled on the Eurasian plate, particularily around China and the Philippines. Stay tuned…

Link

4.7 2011/03/20 05:20:05 37.082 140.588 53.3 EASTERN HONSHU, JAPAN

Doh, Smack dab on them. Hope it didnt do anything nuts.

Originally posted by Shenon
Quake-Nerd-Expertise needed:

We believe we may be on the verge of seeing another degree of intensity in the Japanese aftershocks occurring off the east coast of Honshu, Japan. The depth of the quakes and tremors is increasing which could indicate more subduction pressures along the Pacific plate and may suggest the likelihood of a tension snap-effect could be building. From 9:56 to 13:14 hours, the average depth of seven quakes was 29 km, but from 13:14 to 23.00 hours, the average depth of the last seven quakes is now 58 km- the depth of rattling has nearly doubled. Tension is still also recoiled on the Eurasian plate, particularily around China and the Philippines. Stay tuned…

Link

edit on 20-3-2011 by Shenon because: fixed link

well, we have this recent one:
Sunday March 20 2011, 05:20:04 UTC 39 minutes ago eastern Honshu, Japan 4.7 53.3
which was inland and pretty deep...

another 5.4 now off the coast

Originally posted by cabuki
another 5.4 now off the coast

Yep, and pretty much the same depth as the last one:

DATE/TIME REGION MAGNITUDE DEPTH (in km)
Sunday March 20 2011, 05:55:30 UTC 20 minutes ago near the east coast of Honshu, Japan 5.4 51.0

Magnitude 4.9 - NEAR THE EAST COAST OF HONSHU, JAPAN 2011 March 20 07:54:29 UTC
Magnitude 5.3 - NEAR THE EAST COAST OF HONSHU, JAPAN 2011 March 20 07:56:30 UTC
Magnitude 5.5 - TAIWAN REGION 2011 March 20 08:00:50 UTC
Magnitude 6.0 - BABUYAN ISLANDS REGION, PHILIPPINES 2011 March 20 08:26:11 UTC

These two close on the same fault Phillipine plate reacting more now?

* This event has been reviewed by a seismologist.

Magnitude 6.0
Date-Time

* Sunday, March 20, 2011 at 08:26:11 UTC
* Sunday, March 20, 2011 at 04:26:11 PM at epicenter

Location 19.008°N, 121.261°E
Depth 36.6 km (22.7 miles) set by location program
Region BABUYAN ISLANDS REGION, PHILIPPINES
Distances

* 111 km (69 miles) NE (39°) from Laoag, Luzon, Philippines
* 175 km (109 miles) SSW (206°) from Basco, Batan Islands, Philippines
* 220 km (137 miles) NNW (343°) from Ilagan, Luzon, Philippines
* 296 km (184 miles) NNE (13°) from Baguio, Luzon, Philippines
* 489 km (304 miles) N (4°) from MANILA, Philippines

Location Uncertainty horizontal +/- 13 km (8.1 miles); depth fixed by location program
Parameters NST=208, Nph=223, Dmin=421.9 km, Rmss=0.99 sec, Gp= 58°,
M-type=teleseismic moment magnitude (Mw), Version=8
Source

* U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver

Event ID usc00027dn

* This event has been reviewed by a seismologist.

Magnitude 5.5
Date-Time

* Sunday, March 20, 2011 at 08:00:50 UTC
* Sunday, March 20, 2011 at 04:00:50 PM at epicenter
* Time of Earthquake in other Time Zones

Location 22.396°N, 121.421°E
Depth 17.3 km (10.8 miles)
Region TAIWAN REGION
Distances 47 km (29 miles) SE of Taitung, Taiwan
117 km (72 miles) ESE of Kaohsiung, Taiwan
154 km (95 miles) SE of Chiayi, Taiwan
864 km (536 miles) N of MANILA, Philippines
Location Uncertainty horizontal +/- 11.3 km (7.0 miles); depth +/- 0.2 km (0.1 miles)
Parameters NST=193, Nph=202, Dmin=59 km, Rmss=1.2 sec, Gp= 36°,
M-type=body wave magnitude (Mb), Version=7
Source

* USGS NEIC (WDCS-D)

Event ID usc00027dc

reply to post by zenius


I just see that one on the USGS for the PHILIPPINES.

Is this a normal size quake for the area? EDIT: As in normal i mean normal to have this magnitude.

reply to post by boo1981


The Phillipines get big ones regularly, but Babuyan Islands region apparently doesn't according to EMSC
mb 6.1
Region BABUYAN ISL REGION, PHILIPPINES
Date time 2008-03-03 13:49:40.8 UTC
Location 19.92 N ; 121.36 E
Depth 10 km

was the most recent.


Also, that 2008 quake was 2 months before the Sichuan 7.9 quake.

#

* Reference Number: 3481489
* NZDT: Sun, Mar 20 2011 9:47 pm
* Magnitude: 5.1
* Depth: 10 km
* Details: 10 km east of Christchurch


* Reference Number: 3481486
* NZDT: Sun, Mar 20 2011 9:43 pm
* Magnitude: 3.0
* Depth: 5 km
* Details: 10 km west of Lyttelton

The ones earlier today further south seem to have settled.

geonet

reply to post by zenius


Go to: www.geonet.co.nz - this is the NZ website for all earthquake and volcanic activity for New Zealand.

reply to post by Sailor Sam


The above info IS from Geonet. I forgot to put the source.


USGS have a 4.5 though it's probably the same quake? Need PM or Muzzy to confirm that.
* This event has been reviewed by a seismologist.

Magnitude 4.5
Date-Time

* Sunday, March 20, 2011 at 08:47:39 UTC
* Sunday, March 20, 2011 at 08:47:39 PM at epicenter
* Time of Earthquake in other Time Zones

Location 43.552°S, 172.848°E
Depth 10.9 km (6.8 miles)
Region SOUTH ISLAND OF NEW ZEALAND
Distances 14 km (8 miles) E of Christchurch, New Zealand
224 km (139 miles) SSE of Westport, New Zealand
296 km (183 miles) SSW of WELLINGTON, New Zealand
318 km (197 miles) NE of Dunedin, New Zealand
Location Uncertainty horizontal +/- 11.8 km (7.3 miles); depth +/- 0.8 km (0.5 miles)
Parameters NST= 27, Nph= 34, Dmin=18.9 km, Rmss=0.64 sec, Gp=155°,
M-type=body wave magnitude (Mb), Version=4
Source

* USGS NEIC (WDCS-D)

Event ID usc00027e8

usgs

.Moon at 1950 hrs19th

.. 4.6 1810 hrs japan
... 5.2 1843hrs atlantic,african coast
... 3.5 1903hrs turkey
... 4.9 2008 hrs ethiopia
... 2.3 2010 hrs greece(usual)
... 4.3 2014hrs russia NE
... 3.0 2050 hrs virgin islands
Moon at 2148hrs 19th


List of tremors,realitively minor
.. 4.8 japan 2206hrs
... 2.3 turkey 2137hrs
.. 2.6 greece 2227hrs
... 3.4 asia 2249hrs Kyrgyzstan
... 4.9 japan 2337hrs
.. 4.6 new z 0010hrs woodville
. 2.5 greece 0021hrs
2.5 peurto ric0057 hrs
. 2.2 peurto ric 0113hrs
5.3 japan 0109hrs sasu
Position of moon 0120 am


... 5.6 japan 0130hrs Hisanohama
... 2.2 calif 0214hrs vineyard
... 2.3 greece0212hrs Korithion
... 2.1 portugal 0240hrs
... 2.7 turkey 0304hrs
... 2.1 italy 0314hrs marina
Moon above earth 0945 am

20.03.2011 04:40:33 2.1 Europe Portugal Sagres
20.03.2011 06:40:27 2.5 Asia Turkey Karacaoren
20.03.2011 04:40:23 2.7 Asia Turkey
20.03.2011 04:40:13 2.1 Europe Italy
20.03.2011 05:40:35 4.7 Indonesian Archipelago Indonesia Madawa
20.03.2011 05:40:25 2.3 Europe Greece

20.03.2011 07:40:33 4.7 Asia Japan Kami-misaka
20.03.2011 07:40:23 3.4 Asia Turkey Inapihoyugu
20.03.2011 06:40:19 2.1 Europe Czech Republic Louky
20.03.2011 07:40:13 5.3 Asia Japan Matsukawa
20.03.2011 09:46:29 5.3 Asia Japan Nagasakicho
20.03.2011 08:40:22 3.0 Europe Poland Chocianowiec
20.03.2011 08:40:12 2.7 Europe Czech Republic Raj
20.03.2011 09:46:19 4.8 Europe Russia Baza
20.03.2011 09:46:10 3.3 Asia Turkey Mezraa
20.03.2011 09:46:00 4.9 Asia Japan Ena
20.03.2011 09:45:50 5.2 Asia Japan Tadakoshi
20.03.2011 09:45:41 5.4 Asia Japan Okunoyahama
20.03.2011 09:45:31 5.5 Asia Taiwan Shan-fu-ts'un
20.03.2011 09:25:14 3.5 North America United States California Mercuryville
20.03.2011 09:45:22 5.7 Pacific Ocean - West Philippines Visita
20.03.2011 09:45:12 2.1 Europe Greece Petrona
20.03.2011 10:40:42 3.0 Pacific Ocean New Zealand Woodville County Cashmere Hills
20.03.2011 10:40:32 5.1 Pacific Ocean New Zealand Woodville County Aranui
20.03.2011 10:40:22 2.9 Pacific Ocean New Zealand Woodville County Aranui
Notice any pattern,just saying ?
20.03.2011 0020hrs 4.7 Indonesian Archipelago depth 150 km (93.21 miles)
20.03.2011 0958hrs 3.0 Turkey S of Balatcik, depth 5 km (3.11 miles)
20.03.2011 1046hrs 2.1 S of Dinsmores, California depth 19.80 km (12.30 miles)
20.03.2011 1035hrs 5.1 japan of Nagasakicho, depth2 km (1.24 miles)
20.03.2011 1058hrs 4.8 japan of Niiyamahama, depth 2 km (1.24 miles)

puz:

Question:

Why do all the earthquake sites have the same earthquake but totally different readings for them?

Example:

Iris

20-MAR-2011 08:47:39 -43.55 172.85 4.5 10.9 SOUTH ISLAND, NEW ZEALAND
20-MAR-2011 08:26:11 19.01 121.26 6.0 36.6 PHILIPPINE ISLANDS REGION
20-MAR-2011 08:23:37 36.26 141.76 4.6 20.5 NEAR EAST COAST OF HONSHU, JAPAN

csem

2011-03-20 09:21:05.045min ago 2.33 N 128.33 E 150 mb 4.7 HALMAHERA, INDONESIA 2011-03-20 09:58
2011-03-20 08:47:39.41hr 19min ago 43.55 S 172.85 E 11 M 4.5 SOUTH ISLAND OF NEW ZEALAND 2011-03-20 09:20
2011-03-20 08:31:23.01hr 35min ago 38.91 N 21.38 E 1 ML 2.1 GREECE 2011-03-20 08:43
2011-03-20 08:27:59.71hr 38min ago 39.47 N 142.40 E 33 M 4.7 NEAR EAST COAST OF HONSHU, JAPAN

USGS

4.5 2011/03/20 09:50:04 37.774 141.778 39.1 NEAR THE EAST COAST OF HONSHU, JAPAN MAP
4.6 2011/03/20 09:21:04 2.343 128.354 135.8 HALMAHERA, INDONESIA
4.5 2011/03/20 08:47:39 -43.552 172.848 10.9 SOUTH ISLAND OF NEW ZEALAND
4.7 2011/03/20 08:28:00 39.473 142.399 33.2 NEAR THE EAST COAST OF HONSHU, JAPAN
5.9 2011/03/20 08:26:10 19.035 121.250 31.4 BABUYAN ISLANDS REGION, PHILIPPINES

All so different ! So which one are we meant to go by, i really want to study the EQ's but if i dont know which map to go by how can i get an acurate reading? Its mainly the depth on the quake, as they seem to be very deep?
The big one in the Philippines was huge on some maps but tiny on others. HELP .

reply to post by iWokeUp


I know the answer is in one of these quake watch threads, but I don't remember where. I'm too tired to think much, but I think it's got something to do with the s and p waves measured at a greater distance from the source depending on where the station is located. So for example, if you want the correct reading for a NZ quake go to the NZ source, aka Geonet. If you use the USGS source their closest station may be a further distance so their measurement might be different.
Don't hold me to that explanation. If you U2U Puterman he will explain it better and correctly.

reply to post by zenius


That sounds about right. I had to ask PM the other day about a reading from GEE and he said pretty much what you just have.

reply to post by zenius


Ahh i see !!
Do you know which one would be best and most accurate for the ring of fire ?
Many thanks

reply to post by iWokeUp


That covers a HUGE area. Again, I will have to refer you to Puterman...look at his signature and you'll find a link to his resources...or you'll find it here
He's currently updating it by country/region so that should make it easier for you.

Big quake in japan just now. 6.1

MAP 6.1 2011/03/20 12:03:48 39.365 142.105 53.1 NEAR THE EAST COAST OF HONSHU, JAPAN
MAP 5.3 2011/03/20 11:47:44 -18.800 -174.927 138.6 TONGA

link

reply to post by nonnez


My own feeling is that it is not particularly significant in the great scheme of things

This is the list for the past 365 days (Mah 3.0+) for Vancouver Island. Whilst you could not exactly call them frequent, they are certainly not unknown.

Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
2011-03-20T04:20:39.000Z,49.91020,-128.21620,4.4000,9.9000,Vancouver Island. Canada region
2011-03-03T03:55:05.000Z,50.41720,-129.91390,4.0000,10.0000,Vancouver Island. Canada region
2010-10-04T14:51:55.000Z,49.33360,-129.22050,4.8000,10.0000,Vancouver Island. Canada region
2010-10-04T05:56:18.000Z,49.43670,-129.10660,4.5000,10.0000,Vancouver Island. Canada region
2010-08-17T11:37:58.000Z,50.79320,-129.90940,4.2000,10.0000,Vancouver Island. Canada region
2010-07-26T08:43:27.000Z,50.13360,-129.84510,4.6000,19.6000,Vancouver Island. Canada region
2010-07-19T17:15:03.000Z,49.72990,-129.68190,5.1000,1.0000,Vancouver Island. Canada region
2010-07-11T06:22:06.000Z,50.48780,-130.13590,4.1000,10.0000,Vancouver Island. Canada region
2010-05-06T23:12:33.000Z,48.32630,-127.84720,4.5000,10.0000,Vancouver Island. Canada region
2010-04-16T09:44:22.000Z,48.94840,-127.07090,3.1000,14.9000,Vancouver Island. Canada region

Source: My own database drawn from public domain USGS data.

Please do go to the link. This may affect your future posting in this and other fragile earth threads.

Edit: On a completely different subject this may of interest to some
Someone is wrong in the MSM about radiation