Anyone know or have data sets with ----the average tonnage of all world
volcanic co2 emmisions per year ,graphed against total human co2
emmisions.For the last 100 years say.
I just thought it may make interesting reading.
Jim

On Jan 14, 12:48 am, "jim beam" sputnick wrote:

Anyone know or have data sets with the average tonnage of all world
volcanic CO2 emissions per year, graphed against total human CO2
emissions. For the last 100 years say.
I just thought it may make interesting reading.

We don't even know what volcanoes are active. There are such things
thousands of feet under water that we have yet to go anywhere near.

And human output over the last 100 years?

That's a joke too, right?

You might search out Roger Coppock and ask him, he will make something
to suit you. I wouldn't imagine it is worth reading though.

On Sun, 13 Jan 2008 17:24:02 -0800 (PST), Weatherlawyer wrote:

We don't even know what volcanoes are active. There are such things
thousands of feet under water that we have yet to go anywhere near.

One could argue that those underwater don't release their C)2 into the
atmosphere it get trapped in the water and the deposited on the seabed by
the plankton to form limestone in X million years time...

Of course there is the fact that land based volcanoes are only about 20%
of the total volcanoes on the planet as well.

--
Cheers
Dave. pam is missing e-mail

Squelching through the mud, Dave Liquorice at , blathered on
thus, and it became the following missive...

On Sun, 13 Jan 2008 17:24:02 -0800 (PST), Weatherlawyer wrote:

We don't even know what volcanoes are active. There are such things
thousands of feet under water that we have yet to go anywhere near.

One could argue that those underwater don't release their C)2 into the
atmosphere it get trapped in the water and the deposited on the seabed by
the plankton to form limestone in X million years time...

Of course there is the fact that land based volcanoes are only about 20%
of the total volcanoes on the planet as well.


Of the land based volcanoes that are currently active:

New Activity/Unrest: | Karkar, Papua New Guinea | Llaima, Chile |
Miyake-jima, Japan | Tungurahua, Ecuador

Ongoing Activity: | Anatahan, United States | Bulusan, Philippines |
Kilauea, United States | Popocatépetl, México | Rabaul, Papua New
Guinea | Sakura-jima, Japan | Shiveluch, Russia | Soufrière Hills,
United Kingdom | St. Helens, United States
--
Rob C. Overfield
Hull

RCO wrote:


Of the land based volcanoes that are currently active:

New Activity/Unrest: | Karkar, Papua New Guinea | Llaima, Chile |
Miyake-jima, Japan | Tungurahua, Ecuador

Ongoing Activity: | Anatahan, United States | Bulusan, Philippines |
Kilauea, United States | Popocatépetl, México | Rabaul, Papua New
Guinea | Sakura-jima, Japan | Shiveluch, Russia | Soufrière Hills,
United Kingdom | St. Helens, United States+

I think you'll find that there are a lot more actives volcanoes that
that. There are many that are just 'bubbling away' in normal fashion
without any excess extra activity. I know for a fact that Vanuatu has a
number:

- Ambrym, famous for the lava lakes which regularly appear in the summit
craters.
- Yasur volcano is one of the world's most active with Strombolian
eruptions occurring many times per hour.
- Lopevi volcano is a perfect volcanic cone, located in a beautiful
South Pacific setting.
- Gaua volcano is one of the world's most colourful and scenic, with
multi-coloured summit and a crater lake which creates an unforgettable
landscape.
- Ambae Volcano erupted in December 2005 after being dormant for 120 years.

--
Mike LONGWORTH, Yateley, Hampshire, UK

Squelching through the mud, Mike LONGWORTH at ,
blathered on thus, and it became the following missive...

RCO wrote:


Of the land based volcanoes that are currently active:

New Activity/Unrest: | Karkar, Papua New Guinea | Llaima, Chile |
Miyake-jima, Japan | Tungurahua, Ecuador

Ongoing Activity: | Anatahan, United States | Bulusan, Philippines |
Kilauea, United States | Popocatépetl, México | Rabaul, Papua New
Guinea | Sakura-jima, Japan | Shiveluch, Russia | Soufrière Hills,
United Kingdom | St. Helens, United States+

I think you'll find that there are a lot more actives volcanoes that
that. There are many that are just 'bubbling away' in normal fashion
without any excess extra activity. I know for a fact that Vanuatu has a
number:

- Ambrym, famous for the lava lakes which regularly appear in the summit
craters.
- Yasur volcano is one of the world's most active with Strombolian
eruptions occurring many times per hour.
- Lopevi volcano is a perfect volcanic cone, located in a beautiful
South Pacific setting.
- Gaua volcano is one of the world's most colourful and scenic, with
multi-coloured summit and a crater lake which creates an unforgettable
landscape.
- Ambae Volcano erupted in December 2005 after being dormant for 120 years.


I got my info from:
http://www.volcano.si.edu/reports/usgs/

--
Rob C. Overfield
Hull

On Jan 14, 12:48 am, "jim beam" sputnick wrote:
Anyone know or have data sets with ----the average tonnage of all world
volcanic co2 emmisions per year ,graphed against total human co2
emmisions.For the last 100 years say.
I just thought it may make interesting reading.


Googling for "carbon dioxide volcanos" provided this answer:

Carbon Dioxide

Present-day carbon dioxide (CO2) emissions from subaerial and
submarine volcanoes are uncertain at the present time. Gerlach (1991)
estimated a total global release of 3-4 x 10E12 mol/yr from volcanoes.
This is a conservative estimate. Man-made (anthropogenic) CO2
emissions overwhelm this estimate by at least 150 times.

Gerlach, T.M., 1991, Present-day CO2 emissions from volcanoes:
Transactions of the American Geophysical Union (EOS), v. 72, p. 249,
and 254-255.

On Mon, 14 Jan 2008 10:55:25 -0000, RCO wrote:

Soufri re Hills, United Kingdom

Where is that then?

Ah Montserrat, a British Overseas Territory, not really "United
Kingdom"...

--
Cheers
Dave. pam is missing e-mail

On Jan 14, 11:34 am, RCO wrote:

I got my info from:http://www.volcano.si.edu/reports/usgs/

Which, if you follow it for a few weeks, lets you know the parlous
state of things.

Most of the reports are from distant observations referring to
sightings not measurements. Quite often the volcano erupts unnoticed
and quite often the sighting is from a passing ship that notes Mt
Soandso is smoking. Or some-such.

Volcanoes are not monitored in the same way that weather data or
earthquakes are. In fact geophysics doesn't even connect them
intimately with the latter.

As for subterranean vents not releasing CO2 to the atmosphere or not
doing so directly or quickly. We just can't tell. They probably do
produce clathrates and they can stay dormant eternally.

Not that I believe that is likely. I have no idea what is possible. I
doubt anyone does. We just don't know how CO2 behaves at depth in a
marine environment. (Which, as far as that goes, also applies to CO2
arriving from the atmosphere.)

On Jan 14, 11:46 am, Alastair wrote:

Present-day carbon dioxide (CO2) emissions from subaerial and
submarine volcanoes are uncertain at the present time. Gerlach (1991)
estimated a total global release of 3-4 x 10E12 mol/yr from volcanoes.
This is a conservative estimate.

He'd be better off reading lottery results in an attempt to forecast
winning numbers.

You can't even use the Weatherlawyer sigil of mid latitude North
Atlantic storms ascending into the Arctic, rather than expiring on
Western Europe, with any degree of accuracy, as with the recent spate
for example, the relevant coincident geo-phenomena produced were
tornadoes.

(It remains to be seen if absent deep Atlantic Lows and large
Scandinavian Highs, the lore holds true.)