Tokyo earthquake reports - Japan prelim magnitude 7.3 - off Fukushima (Tsunami Imminent)

Upgraded to 7.4 apparently. Epicenter at 25KM. Reports of injuries no deaths yet.

originally posted by: TinfoilTP
initially the depth was reported 10km now it is revised to 25km. How shallow the epicenter is greatly effects the tsunami.

The USGS has 11.3 I wonder which one to look at?

originally posted by: JustMike
a reply to: carewemust
That quake on March 11, 2011 was around mag 9.0 to 9.1. Ie, pushing around 90-odd times the shaking of this event, and cca 900-odd times the energy release. IOW, it would take about 900 of today's quakes to release the energy of that one quake in 2011.

THANK-YOU! So a 9.1 isn't just 21% stronger than a 7.4. It's MUCH STRONGER. I'll find a graphic showing the relative power as the magnitude increases. Thanks again!

originally posted by: grainofsand
a reply to: Vasa Croe

I imagine we are hoping the same for everyone in the region.

For sure.....I do not want anything bad to happen here. Just posting what is being reported by their local news sources.

I believe the size of the Tsunami is related to the displacement of the sea floor and not the magnitude of the quake. I'm not positive, but I do not believe those are always directly related.

originally posted by: Ranger351

originally posted by: GreatWay

Earthquake hit at 6:01 a.m. local time
Depth reported at 10km
"Evacuate immediately from coastal regions and riverside areas to a safer place such as high ground or an evacuation building"
Tsunami to stroke within minutes says NHK
Height up to 3 metres on coast of Fukushima - NHK

1.4 m tsunami observers....

Grabbed a screenshot from the shoreline of Fuku. Judging by the tree line those waves are yuge..

a reply to: reldra


I don't know how others feel - but I take what local media and local agencies are reporting. In particularly it was the Japanese Meteorological Agency that announced the revision to 7.4 Mag, 25km depth, and the mechanism of quake as from a fault.

However, it's always good to have the data from other agencies, differences in measurements, tools used, and well, politics.

originally posted by: auroraaus
a reply to: reldra


I don't know how others feel - but I take what local media and local agencies are reporting. In particularly it was the Japanese Meteorological Agency that announced the revision to 7.4 Mag, 25km depth, and the mechanism of quake as from a fault.

However, it's always good to have the data from other agencies, differences in measurements, tools used, and well, politics.

True.

Good ole land locked indiana sure looks good right now.

a reply to: TinfoilTP
Sorry to be so picky, but the epicenter is the lat-long location of an earthquake on the surface and has no depth. The hypocenter is the actual point of origin of the quake (where the rupture occurs) -- usually below the surface. So, it's the depth of the hypocenter that is often important. (Because the deeper the quake, the more mass available to dissipate the energy released.)

Word of advice from a long long time Fukushima watcher for those who didn't follow the original disaster...


NEVER EVER and I do mean NEVER EVER take anything that TEPCO says as the gospel truth...swallow with a huge grain of salt because they are well known liars.


But all in all... looks good considering how bad this could have been.

Things are already way way beyond bad at Fukushima Daiichi........it doesn't need any more assistance in it's effort to poison the planet.

Man.. Japan has been through a lot. I hope the people there are okay.
They are very thoughtful and generous people. I remember during the last big one, people in the grocery stores were taking just enough water for themselves, and leaving some on the shelves for other's. In general they just get along. Try getting some water /food in a big emergency in the U.S. these days.

a reply to: JustMike

I recall also that the 9.1 had a 7.6 foreshock and that there are studies out there on the clustering of mega-quakes and hope that this doesn't fall into that category.

a reply to: carewemust
I can help you with that. If you go to the USGS Quake Relative Size Calculator you can input your own numbers and get the results.

For example, if I input mag 9.1 (the March 11 2011 Japan quake) and 7.4 (today's event with JMA's revised figure), I get the following:
A magnitude 9.1 earthquake is 50.118 times bigger than a magnitude 7.4 earthquake, but is 354.813 times stronger (energy release).

To show how critical those "points" are, a mag 9.0 is 100 times bigger (shaking) than a mag 7.0, but 1,000 times stronger. Hence my previous post where I mentioned about 90 times bigger and 900 times stronger -- which were just ballpark figures of the top of my head.

But even if we take the JMA number for today's event as definitive -- and they might revise it up or down a point or two again -- it means it would take 350-odd quakes like today's to release the same energy as the March 2011 quake.

Maybe the reactor pump has not been restarted. They are reporting the temperature going up. Something to do with the water level dropping...maybe because of the backwash?

The inspection has apparently been suspended at the reactor.

So it appears the reactor pump has NOT been restarted and is not working.

I dont like nuclear reactors. I was so glad when they closed the one by me. Im in Cali- Earthquake land. Thats just not a good mix.

My dads army barracks was very close to where Fukashima reactor is today. The Barracks were totally taken out by the last Tsunami. gone.

originally posted by: RickinVa
Word of advice from a long long time Fukushima watcher for those who didn't follow the original disaster...


NEVER EVER and I do mean NEVER EVER take anything that TEPCO says as the gospel truth...swallow with a huge grain of salt because they are well known liars.


But all in all... looks good considering how bad this could have been.

Things are already way way beyond bad at Fukushima Daiichi........it doesn't need any more assistance in it's effort to poison the planet.

QFT!

The original Fukushima meg-thread did indeed show us countless examples of Tepco lies, misdirection, and also the government's involvement in the nuclear power industry and regulatory agencies of said industry. They have the revolving door behavior down to a science. They even have a term for when a person goes from government/regulatory agency to nuclear power industry, they call it "ascent to heaven."

And since the great Tohoku earthquake of 2011, the Japanese government has strictly regulated news reporting on the nuclear power industry.

Much sifting of prevarication becomes necessary to get anywhere near the truth.

originally posted by: Vasa Croe

originally posted by: grainofsand
a reply to: Vasa Croe

BBC are saying it's likely the worst has hit.
Sorry to post non doom porn propaganda.
I hope the BBC is right, won't get me any doom loving stars if they are though lol

That would be great....I am watching the local live feed and they are saying different. Not that BBC can't be correct, but the local news is what I am interested in.

They are now reporting over 1 meter waves so they are getting larger.

It's been a while since the quake though .. I wonder how long before the waves are no longer a threat