Quake Watch 2011

reply to post by Shenon


Well I would have said that the 6.1 was an aftershock to the main 9.0 as the activity in the area has not died down and that one is on the same section. Others may not agree.

The smaller ones right on it are probably directly connected to the 6.1 aftershock.

6.9 Solomon Islands

* Saturday, April 23, 2011 at 04:16:55 UTC
* Saturday, April 23, 2011 at 03:16:55 PM at epicenter

Depth: 98KM

earthquake.usgs.gov...

6.9 is a mighty big one. Hope there was no major damage. Another big one on that ring of fire. Can't help but think gettin' one here is just a matter of time now.

Universal Time April 23 2011 at 11:07
NZ Standard Time Saturday, April 23 2011 at 11:07 pm
Latitude, Longitude 40.70°S, 174.23°E
Focal Depth 70 km Richter magnitude

4.3

Region Marlborough

Location
* 40 km north-east of French Pass
* 70 km west of Paraparaumu
* 80 km north-west of Wellington

www.geonet.org.nz...

Seems to be alot of activity today. Don't want to sound like a doom-monger but I can't help but think another big quake is going to hit the Pacific region later. Be safe everyone!


hisz.rsoe.hu...

Originally posted by MrHappyman989
Seems to be alot of activity today. Don't want to sound like a doom-monger but I can't help but think another big quake is going to hit the Pacific region later. Be safe everyone!


hisz.rsoe.hu...

Level of activity is looking pretty much business as usual, even on the quiet side, IMHO

reply to post by MoorfNZ


That's good then. I'm pretty new to this Quake watching lark.

reply to post by MrHappyman989


No worries, we've all been there

More than likely there will be one in the Pacific region - where most occur

Supercities face high quake risk 22 Apr 2011
Report — UN Development Programme


reliefweb.int/node/397978

New York – More than half of the world’s supercities, with populations of 2-15 million, are at future risk of being affected by nearby magnitude seven or greater earthquakes, warned Eric Calais, Haiti-based seismologist with the United Nations Development Programme (UNDP).

A significant number of very large cities with high population density such as Tokyo, Mexico City, Port-au-Prince, Istanbul or Kathmandu, many in developing countries with rapidly expanding population, are located near fault zones that have caused major earthquakes in the past – and most likely will again in the future.

“The good news is that we know how to mitigate earthquake risk with proven prevention measures. Any country that faces that risk therefore needs to proactively invest in risk reduction measures before the next event strikes, including Haiti and its Caribbean neighbors,” said Eric Calais during a briefing this week at UN headquarters in New York.

(...)

reply to post by Arrius


It is fairly big yes. It will make the whole wotld ring as you can see here on the LISS helicorders page

The PAGER page for the event will tell you if there is likely to be damage.

The Cities exposed section give (for this quake) and MMI V which if you look at the shake map for the event is moderate shaking and very light damage.

These things do however depend very much on local conditions as evidenced by the recent Christchurch quake and some mag 5 events in regions where major structural damage has occurred to basically adobe houses.

Magnitude 6 Quake Hits Eastern Japan
www.presstv.ir...

An earthquake measuring 6.0 on the Richter scale has jolted eastern Japan, but there were no immediate reports of casualties or damage.


The powerful quake struck off the east coast of Honshu island at 19:12 local time (1012 GMT) on Saturday, the Xinhua news agency reported.

The epicenter was monitored at 39.1642 degrees north latitude and 142.8916 degrees east longitude, with a depth of 38.9 kilometers (23 miles).

Earthquake Details

This event has been reviewed by a seismologist.
Magnitude
6.0
Date-Time
Saturday, April 23, 2011 at 10:12:48 UTC
Saturday, April 23, 2011 at 07:12:48 PM at epicenter
Time of Earthquake in other Time Zones
Location
39.164°N, 142.892°E
Depth
38.9 km (24.2 miles)
Region
NEAR THE EAST COAST OF HONSHU, JAPAN
Distances
161 km (100 miles) ESE of Morioka, Honshu, Japan
192 km (119 miles) SE of Hachinohe, Honshu, Japan
201 km (124 miles) ENE of Sendai, Honshu, Japan
475 km (295 miles) NE of TOKYO, Japan
Location Uncertainty
horizontal +/- 15.6 km (9.7 miles); depth +/- 10.9 km (6.8 miles)
Parameters
NST=107, Nph=109, Dmin=317.3 km, Rmss=1.07 sec, Gp= 43°,
M-type=regional moment magnitude (Mw), Version=7
Source
USGS NEIC (WDCS-D)
Event ID
usc0002xfh

I see that Honshu 6.0 was upgraded from 5.9, both USGS and EMSC.

That messed up my list

New Project

I've been doing the Japan, Chile and Greece maps for a couple of months now and its just too much work, especially Greece not having locations in the data. So I've dumped those pages.

Instead I've started Global Mag5+ Quakes ~ 7 Days and 8-30 days, using EMSC data.


You can see at a glance where all the action is, and perhaps more important where it isn't, N. America looking pretty blank

I'll see how it goes, maybe do 30-60, 60-90, 90-120 days too. The data I have processed goes back to 2008

After all its the 5+ that really matter

I don't know if anyone posted this yet. The article is worthwhile reading.
New subduction zone may increase quake risk in the Mediterranean, expert says..

National Geographic

Europe may be starting to dive under Africa, creating a new subduction zone and potentially increasing the earthquake risk in the western Mediterranean Sea, scientists report.

Now studies of recent earthquakes in the region indicate that a new subduction zone may be forming where the plates are colliding along the coasts of Algeria and northern Sicily (see a map of the region).


"Formation of a new subduction zone is very rare," said study leader Rinus Wortel, a geophysicist at Utrecht University in the Netherlands

reply to post by mugger


Strange you should post that just as I was coming on to post these, which are not significant but which i found interesting.

Date/Time UTC,Latitude,Longitude,Magnitude,Depth(Km),Location
2011-04-24 09:25:29, 35.940, 14.830, 3.4, 1.0, Malta Region
2011-04-24 09:21:20, 35.960, 14.820, 3.6, 2.0, Malta Region

Heineken partying heavily? No, they are actually off the coast of Malta in the flat plateau that leads from the Sicily-Malta escarpment towards the island of Malta.

As far as my lists go these are the only quakes in this area (Malta) in the last 2 years.

reply to post by muzzy


Nice one. For all the scaremongering and fearmongering that goes on here in ATS actually the US has relatively few earthquakes of mag 5 and over, even in Alaska.

Many smaller quakes but quite a quiet area of the world compared to some. Not as quiet as Ireland of course!

Can someone please look at the following seismograms of Mount St. Helens(Old Dome)

Part 1 - April_24_2011

Part 2 - April_24_2011

Is this normal activity??

M 6.2 hit Indonesia about 50 minutes or so ago.

reply to post by spydrbyte25


Notice how ordered the spikes are and how the lines are dipping computer malfunction. BTW its as if nature just went wild outside, all sorts of weird noises.
No quakes in Caribbean for a while now.

Magnitude 2.9 - NEVADA

Nothing too extreme, part of the Hawthorne activity...



Edit.. small flurry coming in now for the last 20 minutes.. seen at least 6 new ones, the largest so far a 3.5.

Magnitude 3.5 - NEVADA

Originally posted by Arrius
M 6.2 hit Indonesia about 50 minutes or so ago.

I think I'll wait for another hour yet, EMSC have 5.7, and Geofon 5.8, so it may get downgraded yet

The Aussies have 6.2Mw

6.2 24 April 2011 @ 23:07:51 25 April 2011 @ 09:07:51 -4.500 123.000 0 AUST Sulawesi, Indonesia.
THIS INFORMATION HAS NOT YET BEEN FINALISED

I see they have revamped their web site, about time

www.ga.gov.au...

Indonesians have 6.0ML. so there is some doubt

25-Apr-11 06:07:53 WIB 4.40 S - 122.82 E 6.0 Richter Scale 18 Km 55 km SouthEast KENDARI-SULTENGGARA

www.bmkg.go.id...