M 8.9, off the west coast of northern Sumatra

[EMSC]

http://earthquake.usgs.gov/images/globes/0_95.jpgWednesday, April 11, 2012 08:38:30 UTC
Wednesday, April 11, 2012 02:38:30 PM at epicenter

Depth: 33.00 km (20.51 mi)





More... (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/pt12102000.php)

[Calz]

Wow ... 8.9 ... tsunami watch time peeps.

[ViralSpiral]

Banda Aceh :(

[SKIBADABOMSKI]

Here we go again...

Note the date.. 11th of April.

8.9 for now..
33 Km deep. 495 km of the indonesia coast.

Now they are saying 8.7.

[ViralSpiral]

I missed the date significance Ski.
?

[Wind]

That is just... Woah!

[ViralSpiral]

Indonesia has issued a tsunami warning after a quake with a preliminary magnitude of 8.9 hit waters off westernmost Aceh province.

Source (http://www.washingtonpost.com/world/asia_pacific/indonesia-issues-tsunami-warning-after-89-magnitude-quake-strikes-off-west-coast/2012/04/11/gIQA1fbv9S_story.html)

[Muzz]

For comparison, heres the 2004 quake.

Magnitude 8.9
Date-Time Sunday, December 26, 2004 at 00:58:50 (UTC)
= Coordinated Universal Time
Sunday, December 26, 2004 at 6:58:50 AM
= local time at epicenter
Time of Earthquake in other Time Zones
Location 3.298°N, 95.779°E
Depth 10 km (6.2 miles) set by location program
Region OFF THE WEST COAST OF NORTHERN SUMATRA
Distances
250 km (155 miles) SSE of Banda Aceh, Sumatra, Indonesia
320 km (200 miles) W of Medan, Sumatra, Indonesia
1260 km (780 miles) SSW of BANGKOK, Thailand
1605 km (1000 miles) NW of JAKARTA, Java, Indonesia

Location Uncertainty horizontal +/- 9.2 km (5.7 miles); depth fixed by location program
Parameters Nst=157, Nph=157, Dmin=>999 km, Rmss=1.35 sec, Gp= 29°,
M-type=moment magnitude (Mw), Version=9
Source USGS NEIC (WDCS-D)

[ViralSpiral]

Downgraded to 8,7 (http://projectavalon.net/forum4/showthread.php?43580-M-8.7-off-the-west-coast-of-northern-Sumatra)

still......
does it mean that at such a depth (33 km's) the impact is less?

[bennycog]

saying 8.6 right now here in the 24hr aussie news channel

¤=[Post Update]=¤

and 6.5 felt in the aceh province

[Soul Safari]

Ive got friends in Phuket as we speak. Lets hope we don't have a repeat of 2004!!!

[bennycog]

good site to check back on damage and magnitude of erathquakes in the area..


"MAGNITUDES OF THE 50 LARGEST EVENTS OF THE 20th and 21st CENTURIES
(Seismic Moment order)

Seismic moment (Mo) is now considered the "best" measure of the size of an earthquake. The magnitude scale based on it is the "moment magnitude" or Mw. See about magnitudes.

Note: This list differs somewhat from the top 10 list posted on the USGS and other web sites (given in notes column). This is due in part to what value of the estimated seismic moment is used, both for historical and recent events, and how the moment was calculated. The listing given in Kanamori (1977) is most commonly cited in reference sources, but a considerable number of more recent studies now exist. The ranking from Shedlock et al. (2000) is also given under the notes but is now out of date. The greatest difference occurs in pre-1964 events where estimates of seismic moment are primarily based on proxy indicator studies as few well calibrated seismograms may be available. "

https://www.msu.edu/~fujita/earthquake/bigquake.html

[Hervé]

Earthquake Details


This event has been reviewed by a seismologist.
Magnitude (http://earthquake.usgs.gov/earthquakes/glossary.php#magnitude) 8.6

Date-Time (http://earthquake.usgs.gov/earthquakes/glossary.php#date)

Wednesday, April 11, 2012 at 08:38:37 UTC
Wednesday, April 11, 2012 at 02:38:37 PM at epicenter
Time of Earthquake in other Time Zones (http://neic.usgs.gov/neis/eq_depot/2012/eq_120411_c000905e/neic_c000905e_tz.html)
Location (http://earthquake.usgs.gov/earthquakes/glossary.php#location) 2.311°N, 93.063°E

Depth (http://earthquake.usgs.gov/earthquakes/glossary.php#depth) 22.9 km (14.2 miles)

Region (http://earthquake.usgs.gov/earthquakes/glossary.php#region) OFF THE WEST COAST OF NORTHERN SUMATRA

Distances (http://earthquake.usgs.gov/earthquakes/glossary.php#distances)

435 km (270 miles) SW (215°) from Banda Aceh, Sumatra, Indonesia
964 km (599 miles) W (265°) from KUALA LUMPUR, Malaysia
Location Uncertainty (http://earthquake.usgs.gov/earthquakes/glossary.php#uncertainty)horizontal +/- 13.5 km (8.4 miles); depth +/- 2.6 km (1.6 miles)

Parameters (http://earthquake.usgs.gov/earthquakes/glossary.php#parameters)NST=395, Nph=397, Dmin=514.3 km, Rmss=1.52 sec, Gp= 18°,

M-type=(unknown type), Version=B



Source (http://earthquake.usgs.gov/earthquakes/glossary.php#source)

Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID (http://earthquake.usgs.gov/earthquakes/glossary.php#eventid) usc000905e



http://neic.usgs.gov/neis/eq_depot/2012/eq_120411_c000905e/neic_c000905e_7.jpg
http://neic.usgs.gov/neis/gifs/7_legend.gif
Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green


It is farther out to sea than the boxing day EQ and occurred within the subducting oceanic plate whereas the boxing day one was on the up-thrusted part of the subduction zone.

Hence, less risk of a major tsunami.

**********************************************
Tsunami Information
Message Time:11 Apr 2012 09:45 UTC

Message Num:2

Message Text:click to read (http://ptwc.weather.gov/ptwc/text.php?id=indian.TSUIOX.2012.04.11.0945)

Message Type:Indian Ocean-wide Tsunami Watch Bulletin

Warning: none


Watch:For Indonesia, India, Australia, Sri Lanka, Myanmar, Thailand, Maldives, United Kingdom, Malaysia, Mauritius, Reunion, Seychelles, Oman, Pakistan, Somalia, Madagascar, Iran, Uae, Yemen, Comores, Mozambique, Kenya, Tanzania, Crozet Islands, Bangladesh, Kerguelen Islands, South Africa, Singapore

ETAs / Obs:none

*****************************************

Have a look at the trace of the M****r F****r recorded at La Gomera station here (http://projectavalon.net/forum4/showthread.php?30888-Tirelessly-updating-Avalon-on-the-El-Hierro-eruption.&p=465231&viewfull=1#post465231)

[bennycog]

just throwing it out there..

http://www.bbc.co.uk/news/world-asia-17673741

North Korea starts to fuel rocket before planned launch North Korea says the rocket, scheduled for launch between 12-16 April, will put a satellite into orbit Continue reading the main story
North Korea tensionsJapan issues N Korea rocket order
US confirms North Korea aid halt
N Korea agrees to nuclear freeze
Will North Korea change?

North Korea says it has begun fuelling its rocket ahead of a planned - widely criticised - launch.

Paek Chang-ho, head of the satellite control centre of the Korean Committee of Space Technology, said fuel was being injected "as we speak".

Critics fear that the launch, expected between 12-16 April, is a test of long-range missile technology.

It comes as the Worker's Party promoted new leader Kim Jong-un to "first secretary" at a rare meeting.

The party also named his late father, Kim Jong-il, as its "general secretary for eternity", state media said. Kim Jong-il died in December 2011.

Security 'threat'

Pyongyang says that the rocket will launch a satellite in its quest to peacefully advance its space programme.

"We are injecting fuel as we speak. It has started," Mr Paek told visiting foreign journalists outside the capital, Pyongyang.

"And as for the exact timing of the launch, it will be decided by my superiors."

The journalists were taken on Sunday to the Sohae satellite station at Tongchang-ri, on the country's north-west coast, to see the final preparations.

The launch will also mark the 100th anniversary of the birth of the country's late leader Kim Il-sung.

The North has festivities planned in the lead up to Kim Il-sung's commemoration on Sunday.

Aside from the ongoing meeting of the ruling Korean Worker's Party, an annual session of the parliament to pass new legislation is also scheduled for Friday. Both meetings are expected to further consolidate the transition of power to Kim Jong-un.

Neighbouring countries that may be in the rocket's path have made preparations. South Korea and Japan have said they will shoot down the rocket if it threatens their territory, and the Philippines has re-routed air and sea traffic.

[ViralSpiral]

Thank you Amzer
Watched livestream and they also advised that the impact would be less likely to be hugely destructive.

[bennycog]

i tried to check on alignments and sun activity for the last couple days but nothing i can see.. looking like it will amount to little impact.. BUT IT WAS PRETTY BIG...

dutchsinse...

http://www.youtube.com/watch?feature=player_profilepage&v=YaKdE2x_zA0

[bennycog]

8.8 aftershock " just what they are saying on the news"

¤=[Post Update]=¤

top ten since 1900..

http://www.timetoast.com/timelines/top-ten-biggest-earthquakes-since-1900-davante-bell

[Calz]

8.8 aftershock " just what they are saying on the news"

¤=[Post Update]=¤

top ten since 1900..

http://www.timetoast.com/timelines/top-ten-biggest-earthquakes-since-1900-davante-bell

8.2 on the aftershock according to USGS just released.

[Muzz]

Yeah thats on the beeb too. "New tsunami warning due to more powerful aftershock. 17cm wave measured in the Indian Ocean.Thai gov. issues evac of Andaman coast."

Isnt David Cameron over in Indonesia at the moment?

[avid]

Almost in exactly the same place as 2004 tragedy! That 10km depth AGAIN!
26 December 2004
Epicentre: North of Batunazerah, Aceh
Time: 00:58:50 UTC (06:28:50 IST)
Latitude: 3.298 N (NEIC)
Longitude: 95.778 E (NEIC)
Depth:10 kms (IMD)
Magnitude: Mw 9.1 (see below), 9.0 (HRV)

I use this for latest info http://quakes.globalincidentmap.com/ then go to specific sources for more info.

Avid

[Lisab]

Yes Muzz Camerons in Indonesia.

[Hervé]

The 8.2 is even farther out to sea and, to me, doesn't look like an "aftershock."

http://neic.usgs.gov/neis/eq_depot/2012/eq_120411_c00090da/neic_c00090da_7.jpg
http://neic.usgs.gov/neis/gifs/7_legend.gif
Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

[Black Panther]

Yes Muzz Camerons in Indonesia.

Cameron in Jakarta:

15436

Latest photo: http://edition.cnn.com/2012/04/11/asia/gallery/indonesia-earthquake/index.html?hpt=hp_t1

[Star Tsar]

Iris as of now is reporting this to be quake the ONLY one today so far!

http://http://www.iris.edu/seismon/

[avid]

I recently packed IRIS in as it was too slow, and the accuracy was questionable! The global incident map seems pretty good at the moment. Even quicker than RSOE EDIS.
Avid

[avid]

Blimey - check the LISS! It's almost all black.:eek:
http://earthquake.usgs.gov/monitoring/operations/heliplots_gsn.php

Avid

[Hervé]

http://ptwc.weather.gov/ptwc/images/status_low.png (http://ptwc.weather.gov/ptwc/text.php?id=indian.TSUIOX.2012.04.11.1236)
Tsunami Messages for the Indian Ocean (Past 30 days)




Time (UTC)--------------------Region----------------------Type-----------Details111

Apr 2012 12:36--Off W Coast of Northern Sumatra---Watch Cancellation--html (http://ptwc.weather.gov/ptwc/?region=3&id=indian.TSUIOX.2012.04.11.1236), text (http://ptwc.weather.gov/ptwc/text.php?id=indian.TSUIOX.2012.04.11.1236)111

[avid]

Global HF Ionospheric Map....
I'm not sure how this map works, but the lightest grey areas are over the EQ zone, compared to the rest of the world. What does it mean? Is it related to any 'frequency modulation' or is it natural?
http://www.ips.gov.au/HF_Systems/6/5
Avid

Wow - check out Gakona - very Low!!!!