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Science Forum Index » Chemistry Forum » SUPERVOLCANOES THREATEN EARTH...
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 Posted: Sun Jun 01, 2008 11:46 am |
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UBC researchers part of team that uncovers secrets of supervolcanoes
Published: Thursday, May 29, 2008 | 8:23 PM ET
Canadian Press: Elianna Lev, THE CANADIAN PRESS
VANCOUVER - Researchers at the University of British Columbia and
McGill have simulated the conditions that result in so-called
"supervolcanoes," the massive historic eruptions that can change
weather patterns and wipe out whole civilizations.
And they did it using corn syrup. The natural disasters are extremely
rare - the last one took place on Mount Tambora in Indonesia in 1815 -
making them challenging to study.
"These eruptions are big enough to wipe out entire continents," said
Ben Kennedy, a volcanologist at UBC's department of earth and ocean
sciences.
Holding a bubbly, white rock of cooled lava the size of a basketball,
Kennedy explains that the magma chamber is a space in the earth's
crust filled with molten rock.
With childlike excitement, he explained that during an eruption the
molten rock explodes out, flying at lightning speed in all directions.
"They annihilate everything around it," said Kennedy, who became
interested in volcanology after building a standard baking soda
volcano at a science fair when he was young.
Continue Article
There are potential supervolcano sites around the world, according to
the researchers, including in Yellowstone National Park in Wyoming.
So, in a sophisticated version of the grade-school science fair
project, the team of researchers built a small model to recreate an
eruption.
The researchers wanted to know what goes on inside a volcano's magma
chamber when a supervolcano blows.
The study by Kennedy and Mark Jellinek at UBC and John Stix of
McGill's department of earth and planetary sciences will be published
this week in the journal Nature Geoscience.
The team built a Plexiglas box to represent a magma chamber and filled
it with corn syrup speckled with hundreds of plastic beads to
represent the magma.
They then hoisted up a large, round weight above the plastic box with
a pulley and released it over the makeshift magma chamber to see what
would happen.
What they found was that the magma doesn't erupt in layers but is
actually stirred, or mixed, as it's erupting.
Kennedy used the example of a coke bottle when comparing a normal
volcano to its super counterpart. Shake up the bottle, open the top
and the contents will explode straight out the top.
But with the supervolcano, the bottle would be disc-shaped. It would
follow the same pattern as the exploding coke bottle, but the top
would collapse in, pushing out everything that was left inside.
The residue powder produced from the rock fills the atmosphere after a
supervolcano explosion, launching it around the world with the
potential of causing the planet's temperature to drop.
When the Indonesian supervolcano exploded in 1815, it lead to more
than 100,000 deaths and launched a column of ash about 70 kilometres
into the atmosphere.
The damage it did to the world's climate led 1816 to be known as "the
year without summer."
The Mount Tambora eruption was 10 times more powerful than Krakatoa,
also in Indonesia, and more than 100 times more powerful than Vesuvius
in Italy or Mount St. Helens in Washington State.
And it's considered a small supervolcano.
Researchers say a big one would be the equivalent to a "global nuclear
winter." |
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| Don Stockbauer... |
| Posted: Sun Jun 01, 2008 4:03 pm |
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Guest
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On Jun 1, 8:01 pm, Uncle Al <Uncle... at (no spam) hate.spam.net> wrote:
Quote: nicov... at (no spam) hushmail.com wrote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like in
Kresge supermarkets, or "super" as in Super Hydroxycut?
"Super", as in "Wow, Gee, Mr. Wizard, that's one fucking big
volcanoe!!!!" |
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| Uncle Al... |
| Posted: Sun Jun 01, 2008 8:01 pm |
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Guest
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nicovar2 at (no spam) hushmail.com wrote:
Quote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like in
Kresge supermarkets, or "super" as in Super Hydroxycut?
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2 |
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| Martin Brown... |
| Posted: Mon Jun 02, 2008 2:58 am |
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Uncle Al wrote:
Quote: nicovar2 at (no spam) hushmail.com wrote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like in
Kresge supermarkets, or "super" as in Super Hydroxycut?
Super as in leaving a big hole or caldera where once a large volcanic
mountian used to stand.
Tamborra was generally reckonned to be the loudest bang in recorded
human history. It made 1816 bad for agriculture worldwide.
Krakatoa is more famous because westerners were witnessed it directly
but it was an order of magnitude weaker. Although it put a lot more fine
dust into the stratosphere leading to interesting displays of polar
stratospheric clouds over London. There are no comparable reports of
these clouds arising after the Tamborra event that I can find.
What is odd is that these sorts of scale models using CO2 saturated
viscous media have been around for more than a decade. I can recall
seeing it done in scale model form as part of the televised UK Royal
Institution Christmas lectures for children (I think by James Jackson,
1995). So I think UBC are being a bit disingenuous here. Maybe they get
extra bonus points for finding yet another none food use for corn syrup.
Regards,
Martin Brown
** Posted from http://www.teranews.com ** |
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| G. L. Bradford... |
| Posted: Mon Jun 02, 2008 4:30 am |
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Guest
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"Martin Brown" <|||newspam||| at (no spam) nezumi.demon.co.uk> wrote in message
news:91399$4843a832$26826 at (no spam) news.teranews.com...
Quote: Uncle Al wrote:
nicovar2 at (no spam) hushmail.com wrote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like in
Kresge supermarkets, or "super" as in Super Hydroxycut?
Super as in leaving a big hole or caldera where once a large volcanic
mountian used to stand.
Tamborra was generally reckonned to be the loudest bang in recorded human
history. It made 1816 bad for agriculture worldwide.
Krakatoa is more famous because westerners were witnessed it directly but
it was an order of magnitude weaker. Although it put a lot more fine dust
into the stratosphere leading to interesting displays of polar
stratospheric clouds over London. There are no comparable reports of these
clouds arising after the Tamborra event that I can find.
What is odd is that these sorts of scale models using CO2 saturated
viscous media have been around for more than a decade. I can recall seeing
it done in scale model form as part of the televised UK Royal Institution
Christmas lectures for children (I think by James Jackson, 1995). So I
think UBC are being a bit disingenuous here. Maybe they get extra bonus
points for finding yet another none food use for corn syrup.
Regards,
Martin Brown
Neither one of the above was a super volcano. If a super volcano -- such
as the Three Sisters in Oregon -- goes off it will be as if the Earth had
been hit by an asteroid. Tamborra and Krakatoa were mere popguns in
worldclass destructiveness next to the supers. From what I read the last
known super volcano to go off blew about 74,000 years ago. The supers don't
blow very often anymore, though the Earth appears to be coming due now for
one or more of them to blow.
In the United States, the Three Sisters appear to be to be very slowly but
very steadily heating up for a go. The Yellowstone region might beat it to
the punch though. Though a very old super volcano, the experts believe it
probably has one good kick left to it before it goes extinct for good. Those
are the only two known ranked supers in the United States.
GLB |
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| tadchem... |
| Posted: Mon Jun 02, 2008 5:14 am |
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Guest
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On Jun 2, 5:30 am, "G. L. Bradford" <glbra... at (no spam) insightbb.com> wrote:
Quote: "Martin Brown" <|||newspam... at (no spam) nezumi.demon.co.uk> wrote in message
news:91399$4843a832$26826 at (no spam) news.teranews.com...
Uncle Al wrote:
nicov... at (no spam) hushmail.com wrote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like in
Kresge supermarkets, or "super" as in Super Hydroxycut?
Super as in leaving a big hole or caldera where once a large volcanic
mountian used to stand.
Tamborra was generally reckonned to be the loudest bang in recorded human
history. It made 1816 bad for agriculture worldwide.
Krakatoa is more famous because westerners were witnessed it directly but
it was an order of magnitude weaker. Although it put a lot more fine dust
into the stratosphere leading to interesting displays of polar
stratospheric clouds over London. There are no comparable reports of these
clouds arising after the Tamborra event that I can find.
What is odd is that these sorts of scale models using CO2 saturated
viscous media have been around for more than a decade. I can recall seeing
it done in scale model form as part of the televised UK Royal Institution
Christmas lectures for children (I think by James Jackson, 1995). So I
think UBC are being a bit disingenuous here. Maybe they get extra bonus
points for finding yet another none food use for corn syrup.
Regards,
Martin Brown
Neither one of the above was a super volcano. If a super volcano -- such
as the Three Sisters in Oregon -- goes off it will be as if the Earth had
been hit by an asteroid. Tamborra and Krakatoa were mere popguns in
worldclass destructiveness next to the supers. From what I read the last
known super volcano to go off blew about 74,000 years ago. The supers don't
blow very often anymore, though the Earth appears to be coming due now for
one or more of them to blow.
In the United States, the Three Sisters appear to be to be very slowly but
very steadily heating up for a go. The Yellowstone region might beat it to
the punch though. Though a very old super volcano, the experts believe it
probably has one good kick left to it before it goes extinct for good. Those
are the only two known ranked supers in the United States.
GLB- Hide quoted text -
- Show quoted text -
Geologists do not recognize "supervolcanoes" per se.
They do recognize "super eruptions" - eruptions with a VEI (volcanic
explosive index) of 7 or 8, which eject 100+ km^3 of material.
There are 14 volcanoes which have produced eruptions of VEI 7 or 8.
They are listed here:
http://en.wikipedia.org/wiki/Supervolcano
Note that four of these (Yellowstone, Bruneau-Jarbidge, Long Valley,
and Valles; all calderas) are in the US.
The Three Sisters aren't even mentioned. They are all
stratovolcanoes, the same as Mt. St. Helens (VEI 5 in 1980) and
Pinatubo (VEI 6 in 1991), with no history of super eruptions.
Tom Davidson
Richmond, VA |
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| ... |
| Posted: Mon Jun 02, 2008 6:41 am |
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Guest
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On Jun 2, 8:14 am, tadchem <tadc... at (no spam) comcast.net> wrote:
Quote: On Jun 2, 5:30 am, "G. L. Bradford" <glbra... at (no spam) insightbb.com> wrote:
"Martin Brown" <|||newspam... at (no spam) nezumi.demon.co.uk> wrote in message
news:91399$4843a832$26826 at (no spam) news.teranews.com...
Uncle Al wrote:
nicov... at (no spam) hushmail.com wrote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like in
Kresge supermarkets, or "super" as in Super Hydroxycut?
Super as in leaving a big hole or caldera where once a large volcanic
mountian used to stand.
Tamborra was generally reckonned to be the loudest bang in recorded human
history. It made 1816 bad for agriculture worldwide.
Krakatoa is more famous because westerners were witnessed it directly but
it was an order of magnitude weaker. Although it put a lot more fine dust
into the stratosphere leading to interesting displays of polar
stratospheric clouds over London. There are no comparable reports of these
clouds arising after the Tamborra event that I can find.
What is odd is that these sorts of scale models using CO2 saturated
viscous media have been around for more than a decade. I can recall seeing
it done in scale model form as part of the televised UK Royal Institution
Christmas lectures for children (I think by James Jackson, 1995). So I
think UBC are being a bit disingenuous here. Maybe they get extra bonus
points for finding yet another none food use for corn syrup.
Regards,
Martin Brown
Neither one of the above was a super volcano. If a super volcano -- such
as the Three Sisters in Oregon -- goes off it will be as if the Earth had
been hit by an asteroid. Tamborra and Krakatoa were mere popguns in
worldclass destructiveness next to the supers. From what I read the last
known super volcano to go off blew about 74,000 years ago. The supers don't
blow very often anymore, though the Earth appears to be coming due now for
one or more of them to blow.
In the United States, the Three Sisters appear to be to be very slowly but
very steadily heating up for a go. The Yellowstone region might beat it to
the punch though. Though a very old super volcano, the experts believe it
probably has one good kick left to it before it goes extinct for good. Those
are the only two known ranked supers in the United States.
GLB- Hide quoted text -
- Show quoted text -
Geologists do not recognize "supervolcanoes" per se.
They do recognize "super eruptions" - eruptions with a VEI (volcanic
explosive index) of 7 or 8, which eject 100+ km^3 of material.
There are 14 volcanoes which have produced eruptions of VEI 7 or 8.
They are listed here:http://en.wikipedia.org/wiki/Supervolcano
Note that four of these (Yellowstone, Bruneau-Jarbidge, Long Valley,
and Valles; all calderas) are in the US.
The Three Sisters aren't even mentioned. They are all
stratovolcanoes, the same as Mt. St. Helens (VEI 5 in 1980) and
Pinatubo (VEI 6 in 1991), with no history of super eruptions.
Tom Davidson
Richmond, VA- Hide quoted text -
- Show quoted text -
Supervolcanic eruptions put whole species at risk or possibly the
entire ecosystem. What are the chances that a species could survive
two sypervolcanic eruptions? Maybe the answer might relate to the
longevity of species. The chances of survival of two supervolcanic
eruptions that the entire ecosystem are remote. |
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| G. L. Bradford... |
| Posted: Mon Jun 02, 2008 1:11 pm |
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Guest
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"tadchem" <tadchem at (no spam) comcast.net> wrote in message
news:2c8c8120-14a7-49ec-b639-d482d270e1c3 at (no spam) c58g2000hsc.googlegroups.com...
On Jun 2, 5:30 am, "G. L. Bradford" <glbra... at (no spam) insightbb.com> wrote:
Quote: "Martin Brown" <|||newspam... at (no spam) nezumi.demon.co.uk> wrote in message
news:91399$4843a832$26826 at (no spam) news.teranews.com...
Uncle Al wrote:
nicov... at (no spam) hushmail.com wrote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like in
Kresge supermarkets, or "super" as in Super Hydroxycut?
Super as in leaving a big hole or caldera where once a large volcanic
mountian used to stand.
Tamborra was generally reckonned to be the loudest bang in recorded
human
history. It made 1816 bad for agriculture worldwide.
Krakatoa is more famous because westerners were witnessed it directly
but
it was an order of magnitude weaker. Although it put a lot more fine
dust
into the stratosphere leading to interesting displays of polar
stratospheric clouds over London. There are no comparable reports of
these
clouds arising after the Tamborra event that I can find.
What is odd is that these sorts of scale models using CO2 saturated
viscous media have been around for more than a decade. I can recall
seeing
it done in scale model form as part of the televised UK Royal
Institution
Christmas lectures for children (I think by James Jackson, 1995). So I
think UBC are being a bit disingenuous here. Maybe they get extra bonus
points for finding yet another none food use for corn syrup.
Regards,
Martin Brown
Neither one of the above was a super volcano. If a super volcano -- such
as the Three Sisters in Oregon -- goes off it will be as if the Earth had
been hit by an asteroid. Tamborra and Krakatoa were mere popguns in
worldclass destructiveness next to the supers. From what I read the last
known super volcano to go off blew about 74,000 years ago. The supers
don't
blow very often anymore, though the Earth appears to be coming due now for
one or more of them to blow.
In the United States, the Three Sisters appear to be to be very slowly but
very steadily heating up for a go. The Yellowstone region might beat it to
the punch though. Though a very old super volcano, the experts believe it
probably has one good kick left to it before it goes extinct for good.
Those
are the only two known ranked supers in the United States.
GLB- Hide quoted text -
- Show quoted text -
Geologists do not recognize "supervolcanoes" per se.
They do recognize "super eruptions" - eruptions with a VEI (volcanic
explosive index) of 7 or 8, which eject 100+ km^3 of material.
There are 14 volcanoes which have produced eruptions of VEI 7 or 8.
They are listed here:
http://en.wikipedia.org/wiki/Supervolcano
Note that four of these (Yellowstone, Bruneau-Jarbidge, Long Valley,
and Valles; all calderas) are in the US.
The Three Sisters aren't even mentioned. They are all
stratovolcanoes, the same as Mt. St. Helens (VEI 5 in 1980) and
Pinatubo (VEI 6 in 1991), with no history of super eruptions.
Tom Davidson
Richmond, VA
==================================
The Three Sisters are the three corners of the super between them /
inclusive of them. They double as chimneys in their own right but would all
disappear at once if the super -- that all three are parts of -- blows.
GLB |
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| tadchem... |
| Posted: Tue Jun 03, 2008 8:08 am |
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Guest
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On Jun 2, 12:41špm, nicov... at (no spam) hushmail.com wrote:
Quote: On Jun 2, 8:14šam, tadchem <tadc... at (no spam) comcast.net> wrote:
On Jun 2, 5:30šam, "G. L. Bradford" <glbra... at (no spam) insightbb.com> wrote:
"Martin Brown" <|||newspam... at (no spam) nezumi.demon.co.uk> wrote in message
news:91399$4843a832$26826 at (no spam) news.teranews.com...
Uncle Al wrote:
nicov... at (no spam) hushmail.com wrote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like in
Kresge supermarkets, or "super" as in Super Hydroxycut?
Super as in leaving a big hole or caldera where once a large volcanic
mountian used to stand.
Tamborra was generally reckonned to be the loudest bang in recorded human
history. It made 1816 bad for agriculture worldwide.
Krakatoa is more famous because westerners were witnessed it directly but
it was an order of magnitude weaker. Although it put a lot more fine dust
into the stratosphere leading to interesting displays of polar
stratospheric clouds over London. There are no comparable reports of these
clouds arising after the Tamborra event that I can find.
What is odd is that these sorts of scale models using CO2 saturated
viscous media have been around for more than a decade. I can recall seeing
it done in scale model form as part of the televised UK Royal Institution
Christmas lectures for children (I think by James Jackson, 1995). So I
think UBC are being a bit disingenuous here. Maybe they get extra bonus
points for finding yet another none food use for corn syrup.
Regards,
Martin Brown
š Neither one of the above was a super volcano. If a super volcano -- such
as the Three Sisters in Oregon -- goes off it will be as if the Earth had
been hit by an asteroid. Tamborra and Krakatoa were mere popguns in
worldclass destructiveness next to the supers. From what I read the last
known super volcano to go off blew about 74,000 years ago. The supers don't
blow very often anymore, though the Earth appears to be coming due now for
one or more of them to blow.
š In the United States, the Three Sisters appear to be to be very slowly but
very steadily heating up for a go. The Yellowstone region might beat it to
the punch though. Though a very old super volcano, the experts believe it
probably has one good kick left to it before it goes extinct for good. Those
are the only two known ranked supers in the United States.
GLB- Hide quoted text -
- Show quoted text -
Geologists do not recognize "supervolcanoes" per se.
They do recognize "super eruptions" - eruptions with a VEI (volcanic
explosive index) of 7 or 8, which eject 100+ km^3 of material.
There are 14 volcanoes which have produced eruptions of VEI 7 or 8.
They are listed here:http://en.wikipedia.org/wiki/Supervolcano
Note that four of these (Yellowstone, Bruneau-Jarbidge, Long Valley,
and Valles; all calderas) are in the US.
The Three Sisters aren't even mentioned. šThey are all
stratovolcanoes, the same as Mt. St. Helens (VEI 5 in 1980) and
Pinatubo (VEI 6 in 1991), with no history of super eruptions.
Tom Davidson
Richmond, VA- Hide quoted text -
- Show quoted text -
Supervolcanic eruptions put whole species at risk or possibly the
entire ecosystem. What are the chances that a species could survive
two sypervolcanic eruptions? Maybe the answer might relate to the
longevity of species. The chances of survival of two supervolcanic
eruptions that the entire ecosystem are remote.- Hide quoted text -
The history of super eruptions at
http://en.wikipedia.org/wiki/Vei
indicates that, since Homo sapiens first appeared about 70,000 years
ago (approximately coincident with the VEI 8 super eruption of Toba),
it has survived another VEI 8 super eruption (Taupo, 26,500 BP), and
six VEI 7 super eruptions:
Aira Caldera - 22,000 BP
Kurile - about 6440 BC
Crater Lake, Oregon (Mount Mazama eruption) - —4860 BC
Kikai (Akahoya eruption) - —4350 BC
Taupo (Hatepe eruption) - —180
Mount Tambora - 1815
Homo sapiens (and almost every other species in the world!) survived
them all.
Overall I would have to say "the chances that a species could survive
two sypervolcanic eruptions" are pretty good.
Tom Davidson
Richmond, VA |
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| tadchem... |
| Posted: Tue Jun 03, 2008 8:17 am |
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Guest
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On Jun 2, 2:11 pm, "G. L. Bradford" <glbra... at (no spam) insightbb.com> wrote:
Quote: "tadchem" <tadc... at (no spam) comcast.net> wrote in message
news:2c8c8120-14a7-49ec-b639-d482d270e1c3 at (no spam) c58g2000hsc.googlegroups.com...
On Jun 2, 5:30 am, "G. L. Bradford" <glbra... at (no spam) insightbb.com> wrote:
"Martin Brown" <|||newspam... at (no spam) nezumi.demon.co.uk> wrote in message
news:91399$4843a832$26826 at (no spam) news.teranews.com...
Uncle Al wrote:
nicov... at (no spam) hushmail.com wrote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like in
Kresge supermarkets, or "super" as in Super Hydroxycut?
Super as in leaving a big hole or caldera where once a large volcanic
mountian used to stand.
Tamborra was generally reckonned to be the loudest bang in recorded
human
history. It made 1816 bad for agriculture worldwide.
Krakatoa is more famous because westerners were witnessed it directly
but
it was an order of magnitude weaker. Although it put a lot more fine
dust
into the stratosphere leading to interesting displays of polar
stratospheric clouds over London. There are no comparable reports of
these
clouds arising after the Tamborra event that I can find.
What is odd is that these sorts of scale models using CO2 saturated
viscous media have been around for more than a decade. I can recall
seeing
it done in scale model form as part of the televised UK Royal
Institution
Christmas lectures for children (I think by James Jackson, 1995). So I
think UBC are being a bit disingenuous here. Maybe they get extra bonus
points for finding yet another none food use for corn syrup.
Regards,
Martin Brown
Neither one of the above was a super volcano. If a super volcano -- such
as the Three Sisters in Oregon -- goes off it will be as if the Earth had
been hit by an asteroid. Tamborra and Krakatoa were mere popguns in
worldclass destructiveness next to the supers. From what I read the last
known super volcano to go off blew about 74,000 years ago. The supers
don't
blow very often anymore, though the Earth appears to be coming due now for
one or more of them to blow.
In the United States, the Three Sisters appear to be to be very slowly but
very steadily heating up for a go. The Yellowstone region might beat it to
the punch though. Though a very old super volcano, the experts believe it
probably has one good kick left to it before it goes extinct for good.
Those
are the only two known ranked supers in the United States.
GLB- Hide quoted text -
- Show quoted text -
Geologists do not recognize "supervolcanoes" per se.
They do recognize "super eruptions" - eruptions with a VEI (volcanic
explosive index) of 7 or 8, which eject 100+ km^3 of material.
There are 14 volcanoes which have produced eruptions of VEI 7 or 8.
They are listed here:http://en.wikipedia.org/wiki/Supervolcano
Note that four of these (Yellowstone, Bruneau-Jarbidge, Long Valley,
and Valles; all calderas) are in the US.
The Three Sisters aren't even mentioned. They are all
stratovolcanoes, the same as Mt. St. Helens (VEI 5 in 1980) and
Pinatubo (VEI 6 in 1991), with no history of super eruptions.
Tom Davidson
Richmond, VA
=================================
The Three Sisters are the three corners of the super between them /
inclusive of them. They double as chimneys in their own right but would all
disappear at once if the super -- that all three are parts of -- blows.
GLB- Hide quoted text -
Do you know something the USGS doesn't?
http://vulcan.wr.usgs.gov/Volcanoes/Sisters/framework.html
http://vulcan.wr.usgs.gov/Volcanoes/Sisters/description_three_sisters.html
There IS evidence of a 10 cm lava uplift centered 5 km west of the
Three Sisters (specifically South Sister):
http://vulcan.wr.usgs.gov/Volcanoes/Sisters/WestUplift/ground_uplift_may2001..html
Calders are generally circular, or nearly so, but an examination of
the relief map
http://vulcan.wr.usgs.gov/Imgs/Jpg/Sisters/WestUplift/ssis_InSAR_may2001.jpg
reveals no such feature.
Tom Davidson
Richmond, VA |
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| number6... |
| Posted: Wed Jun 04, 2008 2:34 am |
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Guest
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On Jun 1, 9:01 pm, Uncle Al <Uncle... at (no spam) hate.spam.net> wrote:
Quote: nicov... at (no spam) hushmail.com wrote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like in
Kresge supermarkets, or "super" as in Super Hydroxycut?
I think super as the guy who repairs the plumbing in an apartment ... |
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| G. L. Bradford... |
| Posted: Wed Jun 04, 2008 4:08 am |
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"tadchem" <tadchem at (no spam) comcast.net> wrote in message
news:b45c51d5-9257-4c17-8b2f-32859fdd7de3 at (no spam) t54g2000hsg.googlegroups.com...
On Jun 2, 2:11 pm, "G. L. Bradford" <glbra... at (no spam) insightbb.com> wrote:
Quote: "tadchem" <tadc... at (no spam) comcast.net> wrote in message
news:2c8c8120-14a7-49ec-b639-d482d270e1c3 at (no spam) c58g2000hsc.googlegroups.com...
On Jun 2, 5:30 am, "G. L. Bradford" <glbra... at (no spam) insightbb.com> wrote:
"Martin Brown" <|||newspam... at (no spam) nezumi.demon.co.uk> wrote in message
news:91399$4843a832$26826 at (no spam) news.teranews.com...
Uncle Al wrote:
nicov... at (no spam) hushmail.com wrote:
UBC researchers part of team that uncovers secrets of supervolcanoes
[snip crap]
Would that be "super" as with illegal alien Kal-El, or "super" like
in
Kresge supermarkets, or "super" as in Super Hydroxycut?
Super as in leaving a big hole or caldera where once a large volcanic
mountian used to stand.
Tamborra was generally reckonned to be the loudest bang in recorded
human
history. It made 1816 bad for agriculture worldwide.
Krakatoa is more famous because westerners were witnessed it directly
but
it was an order of magnitude weaker. Although it put a lot more fine
dust
into the stratosphere leading to interesting displays of polar
stratospheric clouds over London. There are no comparable reports of
these
clouds arising after the Tamborra event that I can find.
What is odd is that these sorts of scale models using CO2 saturated
viscous media have been around for more than a decade. I can recall
seeing
it done in scale model form as part of the televised UK Royal
Institution
Christmas lectures for children (I think by James Jackson, 1995). So I
think UBC are being a bit disingenuous here. Maybe they get extra
bonus
points for finding yet another none food use for corn syrup.
Regards,
Martin Brown
Neither one of the above was a super volcano. If a super volcano -- such
as the Three Sisters in Oregon -- goes off it will be as if the Earth
had
been hit by an asteroid. Tamborra and Krakatoa were mere popguns in
worldclass destructiveness next to the supers. From what I read the last
known super volcano to go off blew about 74,000 years ago. The supers
don't
blow very often anymore, though the Earth appears to be coming due now
for
one or more of them to blow.
In the United States, the Three Sisters appear to be to be very slowly
but
very steadily heating up for a go. The Yellowstone region might beat it
to
the punch though. Though a very old super volcano, the experts believe
it
probably has one good kick left to it before it goes extinct for good.
Those
are the only two known ranked supers in the United States.
GLB- Hide quoted text -
- Show quoted text -
Geologists do not recognize "supervolcanoes" per se.
They do recognize "super eruptions" - eruptions with a VEI (volcanic
explosive index) of 7 or 8, which eject 100+ km^3 of material.
There are 14 volcanoes which have produced eruptions of VEI 7 or 8.
They are listed here:http://en.wikipedia.org/wiki/Supervolcano
Note that four of these (Yellowstone, Bruneau-Jarbidge, Long Valley,
and Valles; all calderas) are in the US.
The Three Sisters aren't even mentioned. They are all
stratovolcanoes, the same as Mt. St. Helens (VEI 5 in 1980) and
Pinatubo (VEI 6 in 1991), with no history of super eruptions.
Tom Davidson
Richmond, VA
==================================
The Three Sisters are the three corners of the super between them /
inclusive of them. They double as chimneys in their own right but would
all
disappear at once if the super -- that all three are parts of -- blows.
GLB- Hide quoted text -
Do you know something the USGS doesn't?
http://vulcan.wr.usgs.gov/Volcanoes/Sisters/framework.html
http://vulcan.wr.usgs.gov/Volcanoes/Sisters/description_three_sisters.html
There IS evidence of a 10 cm lava uplift centered 5 km west of the
Three Sisters (specifically South Sister):
http://vulcan.wr.usgs.gov/Volcanoes/Sisters/WestUplift/ground_uplift_may2001.html
Calders are generally circular, or nearly so, but an examination of
the relief map
http://vulcan.wr.usgs.gov/Imgs/Jpg/Sisters/WestUplift/ssis_InSAR_may2001.jpg
reveals no such feature.
Tom Davidson
Richmond, VA
I'm going to have to back off on what I said. The article was dealing in
potential from the uplift rather than any certainty.
http://www.space.com/scienceastronomy/planetearth/volcano_monitor_010807-1.html
GLB |
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