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Author Topic: Underwater volcano erupts off Tonga  (Read 8773 times)

paul.fr

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Underwater volcano erupts off Tonga
« on: 19/03/2009 20:22:57 »
An underwater volcano has erupted close to the Tonga coast, in the South Pacific ocean.

Scientists sailed to inspect the the volcano, which has been shooting smoke, steam and ash into the air near the low-lying twin volcanic islands of Hunga Tonga and Hunga Ha'apai.

Local authorities said coastal villages close to the active volcano were not yet at risk, and that no warnings had been issued.

Video here:
http://news.bbc.co.uk/1/hi/world/asia-pacific/7952030.stm

and here:
http://news.nationalgeographic.com/news/2009/03/090319-tonga-volcanic-eruption-ap-video.html

--------------------------

The Sakurajima volcano in Japan has erupted again throwing debris as far as two kilometres away. An eruption had been expected following a series of smaller explosions over the weekend.

The volcano is one of Japans most active volcanoes with thousands of minor explosions reported each year.

It is not thought there was any damage caused by the latest eruption

video here:
http://news.bbc.co.uk/1/hi/world/asia-pacific/7934418.stm

----------------------

The world's most active volcano, Mount Kilauea in Hawaii, is experiencing a major lava flow.

video here:
http://news.bbc.co.uk/1/hi/world/7509229.stm


 

Offline Karen W.

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Underwater volcano erupts off Tonga
« Reply #1 on: 19/03/2009 20:55:38 »
Paul is there any way to find out about weather anyone has been hurt at all....I have a old friend who lives in Tonga... he spends a great deal of time rowing in between islands..... so he is in the water constantly....?

worried....
 

Offline erickejah

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Underwater volcano erupts off Tonga
« Reply #2 on: 19/03/2009 22:52:50 »
Wow!!
I wonder what was the power of that explosion...
 

Offline Chemistry4me

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Underwater volcano erupts off Tonga
« Reply #3 on: 20/03/2009 01:32:18 »
Will there be huge waves crashing onto the coast here?
 

Offline Bass

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Underwater volcano erupts off Tonga
« Reply #4 on: 20/03/2009 04:38:33 »
No tsunami danger from the volcano.  However, a 7.9M earthquake today in the same region caused a tsunami alert for the south Pacific, which was later canceled.

Karen, there have been no reports of any injuries at this time.  Apparently some boaters were close enough to video part of the eruption- which they have been showing on the major news channels all day.
 

Offline Karen W.

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Underwater volcano erupts off Tonga
« Reply #5 on: 20/03/2009 05:54:29 »
thanks....Bass.. I will check the link.
 

Offline LeeE

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Underwater volcano erupts off Tonga
« Reply #6 on: 20/03/2009 11:39:33 »
The Beeb and youtube vids are the same.

If you turn the sound up a bit you'll hear someone realise that the eruption is producing pyroclastic surges and that they should 'run away'.  Fortunately, the surges are pretty small and don't reach the boat, which is just as well; you couldn't outrun a surge in any sort of boat.
 

Offline DoctorBeaver

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Underwater volcano erupts off Tonga
« Reply #7 on: 21/03/2009 22:11:41 »
That underwater eruption is rather impressive.
 

paul.fr

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Underwater volcano erupts off Tonga
« Reply #8 on: 22/03/2009 07:33:55 »
Paul is there any way to find out about weather anyone has been hurt at all....I have a old friend who lives in Tonga... he spends a great deal of time rowing in between islands..... so he is in the water constantly....?

worried....

Sorry I did not answer sooner, Karen, but I think Bass covered it...Thanks, Bass.
 

Offline Bass

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Underwater volcano erupts off Tonga
« Reply #9 on: 27/03/2009 19:37:29 »
From NASA Earth Observatory web site: http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=37657&src=nha





Top photo from 2006, bottom photo from 26 March 2009.  Submarine eruption just south of Hunga Ha'apai created a new island.  The eruption apparently killed vegetation and animals on Hunga Ha'apai.
 

Offline JimBob

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Underwater volcano erupts off Tonga
« Reply #10 on: 28/03/2009 22:38:11 »
If the trades were different it could have been much more serious. Are there any contingency plans should the eruption occur when the trades change?
 

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Underwater volcano erupts off Tonga
« Reply #10 on: 28/03/2009 22:38:11 »

 

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