6.6 strikes, biggest in days (2011-03-22 07:18:47 off east coast of Honshu)

6.6 M - OFF EAST COAST OF HONSHU, JAPAN

Preliminary Earthquake Report
Magnitude 6.6 M
Date-Time
22 Mar 2011 07:18:47 UTC
22 Mar 2011 17:18:47 near epicenter
21 Mar 2011 23:18:47 standard time in your timezone
Location 37.249N 143.956E
Depth 26 km
Distances
272 km (169 miles) E (85 degrees) of Iwaki, Honshu, Japan
292 km (182 miles) ESE (111 degrees) of Sendai, Honshu, Japan
312 km (194 miles) E (99 degrees) of Fukushima, Honshu, Japan
415 km (258 miles) ENE (64 degrees) of TOKYO, Japan
Location Uncertainty Horizontal: 13.9 km; Vertical 0.5 km
Parameters Nph = 305; Dmin = 518.7 km; Rmss = 1.18 seconds; Gp = 32°
M-type = M; Version = 7
Event ID US c00028pe
For updates, maps, and technical information, see:
Event Page
or
USGS Earthquake Hazards Program

National Earthquake Information Center
U.S. Geological Survey
neic.usgs.gov...

MANILA, Philippines - A magnitude 6.6 earthquake struck off the coast of Japan, which is still suffering from the effects of the magnitude 8.9 magnitude quake followed by a devastating tsunami last March 11.

The US Geological Survey said the quake's epicenter was 274 kilometers east of Iwaki City, one of the areas in Honshu that was worsely hit by the March 11 earthquake.

www.philstar.com...

TOKYO (BNO NEWS) -- A strong earthquake struck off eastern Japan on late Tuesday afternoon, seismologists said, but no tsunami warnings were issued.

wireupdate.com...

I remember on 9/11 the French president, or prime minister, said that today we are all American.

Today we are all Japanese.

May god help them now....

This is the definition of FUBAR.

Previous aftershock map is just a wall of red:

The depth is 26km not very shallow and hopefully nothing will come of this.

reply to post by binomialtheorem


I remember on 9/11 the French president, or prime minister, said that today we are all American.

Today we are all Japanese.

May god help them now.... (your quote)



My reply is AMEN. May god be with them all. Hopefully one day we will all join together as Humanity. Hopefully one day Color , creed, race, sexual orientation, religion, etc will not be matters to devide us.

Originally posted by binomialtheorem

May god help them now....

You act like this was a major quake. Jesus. Nothing happened.



Here's a "so it begins".

Originally posted by Frankenchrist

Originally posted by binomialtheorem

May god help them now....

You act like this was a major quake. Jesus. Nothing happened.



Here's a "so it begins".

If you haven't noticed this isn't the only thing Japan has to deal with right now....

I just stocked up on wild harvested seaweed from the northeast coast of Japan. Bought a little over $180 worth of seaweed.

Dulse has an incredible amount of naturally occurring iodine per serving - and it is healthy. I love snacking on this stuff (note the product linked below is not from Japan - just had a more detailed product label on Amazon).

www.amazon.com...=gronf_njs_1

I can not belive what I am seeing on the earth quake map.
Link
Japan keeps geting lots of quakes from 4 up to 6.6
they just had a 6.6
Tuesday March 22 2011, 09:44:29 UTC 27 minutes ago off the east coast of Honshu, 6.6 quake 15.5 deep
before that 6.4
Tuesday March 22 2011, 09:19:05 UTC 55 minutes ago near the east coast of Honshu, 6.4 27.0
Tuesday March 22 2011, 07:18:50 UTC 2 hours ago off the east coast of Honshu, 6.6 10.0
Tuesday March 22 2011, 07:18:47 UTC 2 hours ago off the east coast of Honshu, 6.6 26.5
are they building up to some thing bigger that a 9 ?

reply to post by sepermeru


Excuse my ignorance here, but at what magnitude does an earthquake become a problem.

Japan is having regular hits and the last was, as the OP states, 6.6 at 15km depth, 30mins ago!

I would have thought that was shallow, and that a tsunami was likely?

Presumably the more shallow the more dangerous? So how can 6.6 do nothing, yet 8.9 causes a catastrophic
outcome?

Originally posted by ckitch
reply to post by sepermeru

 

Excuse my ignorance here, but at what magnitude does an earthquake become a problem.

Japan is having regular hits and the last was, as the OP states, 6.6 at 15km depth, 30mins ago!

I would have thought that was shallow, and that a tsunami was likely?

Presumably the more shallow the more dangerous? So how can 6.6 do nothing, yet 8.9 causes a catastrophic
outcome?

edit on 22-3-2011 by ckitch because: typos

While a 6.6 is nothing to shake a stick at, An 8.9 is thousands of times more powerful than a 6.6.

The Richter magnitude scale uses a logarithmic scale to measure the amount of seismic energy released by an earthquake. Energy increases exponentially on the scale.

Depends on the location too, it seems.

Even if it did, the structure of the tectonic plates and fault lines around the city makes it unlikely that Tokyo would be hit by a quake anywhere near the intensity of the 9.0-magnitude one that struck March 11, said Roger Musson of the British Geological Survey But, given the vast population — Tokyo and its surroundings are home to 39 million people — any strong temblor could be devastating. "Even if you've got, let's say, a 7.5, that would be serious," the seismologist said.

Yahoo! News Article

reply to post by goochball


I see they've just had a another 5.6 some 31 minutes ago. These are becoming very regular. Is a big one brewing, or could they continue like this forever.

Also, can someone advise on what the difference is in danger in relation to depth of quake.This latest one was only 1km deep.

reply to post by ckitch


Yeah, 5.5s have been fairly common. But how destructive they are really seems to depend. Certainly a 6.6 is not weak or harmless by default by any means:

6.6 261.9 kilotons (approx force in TNT) 1.1 PJ MW San Fernando earthquake (California, USA), 1971

This one seems to have gotten lucky, but it certainly could have done damage.