national

Mount Fuji 'under more pressure than last eruption'

41 Comments

The requested article has expired, and is no longer available. Any related articles, and user comments are shown below.

© 2012 AFP

©2021 GPlusMedia Inc.

41 Comments
Login to comment

How do they know what the pressure in the magma chamber was 300 years ago?

16 ( +15 / -0 )

Seeing as how Mt. Fuji assumed its present shape just 8,000 years ago (according to geologists), that makes it a baby as far as volcanoes go. Not too worried about the fault line underneath it. Every time I pick up a newspaper they've found a new fault line somewhere, including one that runs from Ikebukuro to Ginza.

5 ( +6 / -1 )

Every time I pick up a newspaper they've found a new fault line somewhere, including one that runs from Ikebukuro to Ginza.

That's not a fault line. That's the Marunouchi Line!

24 ( +25 / -1 )

scientists fear that any new blast could cause up to $32 billion of damage

I love estimates like these. Not 33 billion dollars. We're sure.

the mountain may collapse if a newly-discovered fault-line underneath it shifts.

Yeah maybe, but I notice that didn't happen in 1707, and the same fault line must have been there. Has it happened with other volcanoes like this one?

1 ( +4 / -3 )

How do they know what the pressure in the magma chamber was 300 years ago?

Wow, to me that's like asking how does everyone know Dinosaurs existed, or how do they know the age of mummified bodies? Science is the appropriate answer you're looking for.

9 ( +10 / -1 )

If you read the weeklies, they are always trotting out a new disaster scenario every other month. I have often heard about "if" Fuji blew and the damage this and environment that.

Not say it won't blow (and, yes, anybody in the nuke industry better have their just in case backups ready), but just that if you want to sit around fearing everything, there's a million things you could come up with to fear...

2 ( +2 / -0 )

Has it happened with other volcanoes like this one?

Okay, answering my own question. It has, and it's called a "caldera." It still didn't happen in 1707, though.

0 ( +2 / -2 )

Can't they remove the pressure inside the volcano?

-1 ( +4 / -5 )

Alright, now I am worried. I downplayed just how much of a threat Fuji is but now I take it much more seriously. I hope this thing does not erupt anytime soon.

3 ( +3 / -0 )

In February, some new craters were spotted by aerial photography.

0 ( +1 / -1 )

Can't they remove the pressure inside the volcano?

Sure, open the valve stem and just bleed it off.

7 ( +7 / -0 )

FullM3taLSEP. 08, 2012 - 06:43PM JST *How do they know what the pressure in the magma chamber was 300 years ago?

Wow, to me that's like asking how does everyone know Dinosaurs existed, or how do they know the age of mummified bodies? Science is the appropriate answer you're looking for*.

Fair enough, but how do they know using science?

4 ( +4 / -0 )

"If Mount Fuji erupts, it could cause 2.5 trillion yen of damage"

Fill it with concrete already!

0 ( +4 / -4 )

"Erupt" meaning BOOM! or meaning sputtering lava?

0 ( +1 / -1 )

Iowan, Mt Fuji's previous eruptions have been explosive

1 ( +1 / -0 )

Can Superman save us ? I want to see boulders (the size of a car) flying through the air.

-5 ( +0 / -5 )

If you live here in the Metropolitan Tokyo Area, so Kanagawa, Shizuoka, Yamanashi and yes, TOKYO, kiss your ass good bye! Sayonara if Fuji san blows up!

-12 ( +1 / -13 )

Don't forget to remover your contact lenses immediately since there is risk of damage to the cornea. (the contact lenses may stick to your eyes.)

1 ( +2 / -1 )

I'll keep that in mind when i go hiking up Fuji next week. 300 years....I'll take my chances.

1 ( +1 / -0 )

I would not laugh at this news.

This news reminds me a city of Pompeii-Italy how the city was buried under ashes after vocanic eruption.

1 ( +1 / -0 )

Trying to predict what nature will doing to is like playing the lottery. One in 10000000 times someone gets it right.

-3 ( +0 / -3 )

I'll keep that in mind when i go hiking up Fuji next week. 300 years....I'll take my chances

Volcanic eruptions are almost always preceded by swarm earthquakes........like dozens per hour........as the magma rises beneath the mountain. So until that happens, you should be okay for a clime up and down.

2 ( +2 / -0 )

Techall... Good to keep an ear and eye out for... Cause then thats when I head to Narita with my family and get off this island. Once that puppy explodes... No plane will be taking off either.

Meanwhile - life is same ol' same ol' with the ocacasional PTSD from 3/11 attacks.

1 ( +1 / -0 )

Awhile before the 11/3/11 big one, one of the TV networks did this really scary documentary about what scientists say could actually happen if Fuji were to have a major eruption, complete with that really scary music and graphics before and after every commercial break that Japanese TV channels always love. I swear it was really an eye-opener and the facts noted really rang true so they really didn't need the scary music to freak me right out! Basically, it's all about wind direction. In the event of a major eruption, if the wind was blowing the speed and direction that it usually does, -right towards Tokyo, the most populated areas of the Kanto plain would have tons of ash, razor sharp microscopic glass-like particles, that shred the inside of your lungs, dumped on it, so that literally millions would die, since the same ash particles would also clog all machinery so all traffic (trains,planes and cars) attempting to flee the ensuing chaos would be stopped cold, along with all electricity and communications. Wow, why am I still not a flyjin? I really don't know. Sweet dreams all!

0 ( +0 / -0 )

It reminds me of Mt St Helen in USA in 1980: people didn't believe it would erupt. Then chaos happened.

1 ( +2 / -1 )

Like to old Gonzilla movies, " Oh, there goes Tokyo." Well at least that is what the English sub titles said.

-1 ( +1 / -2 )

Earthquakes aren't predictable yet, but they're pretty good at predicting volcanoes these days, at least soon enough to start an evacuation. The problem in Japan is -,where will people evacuate to? The winds usually go west to east, so that means Tokyo gets a lot of the volcanic gas .. enough to make life pretty difficult.

0 ( +0 / -0 )

For the doubter who thumbed down my comment about the newly discovered craters, here are thelinks:

http://mobile.volcanodiscovery.com/fuji/news/5496/Mt-Fuji-volcano-Japan-signs-of-volcanic-unrest-reported.html

http://news.livedoor.com/lite/article_detail/6274468/

0 ( +0 / -0 )

Tectonic shifts triggered by last year’s huge 9.0 magnitude undersea quake have left the chamber under 16 times the minimum pressure at which an eruption can occur, researchers said.

Hmm, I can't figure out what this means --the chamber under 16 times or the chamber under comma 16 times more---

Its pretty amazing that they can tell you the pressure of something they would have had difficulty measuring 300 years ago but they can't tell you who committed a terrible public crime that happened yesterday.

-1 ( +0 / -1 )

Damn... is this creaky in the forecast? A blown volcano? in this case Mt Fuji? If that really happens, it doesn't matter where we evacuate to. Just getting out of Tokyo would be an impossibility. There aren't enough passage ways to get everybody out in time. Where would we go to that's safe? If we go north, the aftermath of the Tohoku disaster still lingers. If we go south the ash and possible road infrastructure would be taken out with the blast or weight of the ash and rocks. There is no where to run to. We are all sitting ducks.

-7 ( +0 / -7 )

There is no where to run to. We are all sitting ducks

.I don't know. Narita is pretty far to the east, so you could probably still get out that way, if you had enough warning. For example, in Nicaragua, right now, there is a volcano about to blow. People seem to have almost a week or so warning that there MAY be a problem, and a little more time to hear that there WILL be a problem. You could probably get out, I think, or if not, Chiba might be out of the immediate danger zone.

0 ( +0 / -0 )

There are actually two extinct volcanoes under Mt. Fuji. (Their names are Komitake and Kofuji or Old Fuji.) The process that makes the point where the Izu Peninsula meets Honshu a geological hot spot has been ongoing for eons. What's most worrisome, I suppose, is that the 1707 eruption (from the Hoei crater on the eastern slope) was the largest eruption of Fuji recorded in history. So basically, anything goes. The 1707 eruption caused rice crops to fail, resulting in widespread famine. At least in those days they didn't need to worry about the Tomei Expressway, Shinkansen and local airports being shut down.

0 ( +0 / -0 )

If Mount Aso, down here in Kyushu, decides to blow suddenly, it'll be sayonara for the whole population (14 million). : (

0 ( +0 / -0 )

That's why we moved to Melbourne.

1 ( +1 / -0 )

lol...you moved to Australia because of volcano fears!!?? LMAO

2 ( +2 / -0 )

Dont care about how much it will cost. Life is priceless. Whats the estimated radius of the blast? Tell me the danger zone.

0 ( +0 / -0 )

No need to worry. Japanese volcanoes are the safest in the world, nothing can ever go wrong with them. Please go back to being productive society members. :D

0 ( +1 / -1 )

FYI, before you "poo poo" the idea of a Mt. Fuji eruption:

Mt. Fuji is about 3000 feet taller than Mt. St. Helens before it blew in 1980. That eruption reduced St. Helen's height from 9,677 feet to 8,365 ft.

As a bonus, Mt. Fuji is about 7 times closer to Tokyo than St Helens was from my home town(at the time) in Spokane, Washington. We got over half a foot of ash on the ground(which lasted for weeks), it fell like thick snow, blacking out the sun for hours...

If Mt Fuji's eruption is anything like Mt. St. Helens, and the wind is blowing towards us, then no doubt about it: we will be in a WORLD OF HURT!

There's lots of cool information about the St. Helens eruption, here: http://pubs.usgs.gov/fs/2000/fs036-00/

0 ( +0 / -0 )

Can't they remove the pressure inside the volcano?

yeah....there is a tap just around the back. We just have to turn it on for an hour or so and that will do the trick.

1 ( +1 / -0 )

@mlg4035

The big problem is not actually if Fuji will blow. That is inevitable. The problem is where Fuji is located. It's on a fault line that can start one of the worst chain reaction in history effecting at least four continents directly.

0 ( +0 / -0 )

There are aliens living in that mountain, I'm telling you!

0 ( +0 / -0 )

Login to leave a comment

Facebook users

Use your Facebook account to login or register with JapanToday. By doing so, you will also receive an email inviting you to receive our news alerts.

Facebook Connect

Login with your JapanToday account

User registration

Articles, Offers & Useful Resources

A mix of what's trending on our other sites