Underwater Volcanism

[InfiniteNow]

Originally Posted by Turtle

AGiant Deep-Sea Volcano With "Moat of Death" Found

This particular quote causes me further concern, as the ocean's ability to absorb CO₂ from the atmosphere is already decreasing due to saturation.

If CO₂ is ALSO entering the ocean from underwater volcanoes, that implies that the oceans will become saturated sooner, and hence will absorb far less atmospheric CO₂ than needs absorbing. It seems that nature's ability to mitigate anthropogenic contributions of CO₂won't be enough to lend much aid during the time scales pertinent to human life.




Southern Ocean Carbon Sink Weakened

Scientists have observed the first evidence that the Southern Ocean’s ability to absorb the major greenhouse gas, carbon dioxide, has weakened by about 15 per cent per decade since 1981.

In research published in Science, an international research team – including CSIRO’s Dr Ray Langenfelds – concludes that the Southern Ocean carbon dioxide sink has weakened over the past 25 years and will be less efficient in the future. Such weakening of one of the Earth’s major carbon dioxide sinks will lead to higher levels of atmospheric carbon dioxide in the long-term.

[Turtle]

Originally Posted by freeztar

I'm sure that some of it escapes the ocean, but it would be nice to quantify it.
Carbonic acid is the acid produced, but it seems quite unstable.



I just found this tasty morsel. Does under-ice count as under-water?
Press Release - First evidence of under-ice volcanic eruption in Antarctica - British Antarctic Survey

Nice!! But.... the title misleads I think, as the article I just posted on an underwater Antarctic volcano is from 2004, so clearly this is not the first in Antarctica. I think the article clarifies that it the first in West Antarctica, wheras the one I cited is at the Northern tip.

You know what they say; where there's smoke, there's fire. I'll sharpen my axe. _________________

[Turtle]

Originally Posted by Turtle

... try not to get lost on the other underwater volcano info you pass on the way. ................ Seamount Hydrothermal Systems: Volcanology, Biology, Geochemistry, and Oceanography II Posters - Volcanology, Geochemistry, Petrology [V]

Lost? Which way is up? Erhm....down? From one of the Abstracts I recommended not getting lost on at the above link: (it is the 10th in the list.) ___ ... .. ._______ __.

Recent investigations of volcanic arcs have revealed unusually high fluxes of CO2 from several submarine arc volcanoes. In 2004 the ROPOS ROV was used to map and sample ~10 active volcanoes along the Mariana arc, and in 2005 a similar study of volcanoes along the Kermadec arc was conducted using the HURL Pisces submersible. Of particular interest are 3 volcanoes that, in addition to discharging hot vent fluid, were found to be venting a separate CO2-rich phase in the form of gas bubbles or, in one case, droplets of liquid CO2. The Champagne hydrothermal site situated at ~1600-m depth near the summit of NW Eifuku volcano (21.49°N, 144.04°E) in the northern Mariana Arc, was discovered in 2004 during NOAAs Submarine Ring of Fire (SROF) project. This unusual site was discharging two distinct fluids from the same vent field: a 103°C gas-rich hydrothermal fluid, and cold (4°C) droplets of liquid CO2. ...

[Turtle]

Originally Posted by freeztar

I'm sure that some of it escapes the ocean, but it would be nice to quantify it.
Carbonic acid is the acid produced, but it seems quite unstable.

Roger the instability; I'm following the new thread on carbonic acid instability. I see one of the factors is pressure, so I found this handy water-pressure-by-depth calulator: Pressure at Water Depth Calculator

Going by these figures...

Originally Posted by Reuters

Local students recently named the volcano, located 28 miles east of Taiu Island, 'Vailulu'u'. The volcano rises up more than 16,400 feet from the seabed to within 2,000 feet of the ocean's surface. ...
Underwater - Submarine Volcanoes

Water pressure at 2,000 feet = 881.7514 psi
Water pressure at 16,400 feet = 7124.5504 psi

I have sought help setting up a catalog of underwater volcanoes using GoogleEarth; Vailulu'u is on the regular volcano list, but there does not appear to be an exclusively underwater catalog.

That's a rap...erhm...wrap.

[freeztar]

Awesome Turtle!

I was wondering how to calculate psi at depth x, so that link is nice.

Let us know what the GE community comes up with.

[freeztar]

Here's a great link I found that lists 43 submarine volcanos (wiki of all places). Looks like I've got some reading to do.

Category:Submarine volcanoes - Wikipedia, the free encyclopedia

Also, following some terms from the abstract you posted in the carbonic acid instability thread led to many more leads (such as Mariana Arc). I'll have more time to research after work, but it looks like this thread will be erupting soon. (pun intended)

[Turtle]

Originally Posted by freeztar

Here's a great link I found that lists 43 submarine volcanos (wiki of all places). Looks like I've got some reading to do.

Category:Submarine volcanoes - Wikipedia, the free encyclopedia

Also, following some terms from the abstract you posted in the carbonic acid instability thread led to many more leads (such as Mariana Arc). I'll have more time to research after work, but it looks like this thread will be erupting soon. (pun intended)

Nice! I think before this gets out of hand we ought to make a simple notepad file to record coordinates. Oui/no? Names too of course if they have them.

I concur on eruptive phase. Given that I have already lost some good links because I didn't save them , it's go time.

Here's a piece on the complex of volcanism & hydrothermal vents in the Arctic ocean newly under study:

Wired Science . Icy Depths | PBS

Originally Posted by PBS

Three miles beneath the Arctic ice cap, just shy of the North Pole, lies an ancient underwater midocean ridge known as the Gakkel. It was one of the last areas on Earth yet to be explored, but intrepid geologist Rob Reves-Sohn of the Woods Hole Oceanographic Institution decided eight years ago that he wanted to change that. At the Gakkel, Earth's crust is spreading slowly apart, uncovering new volcanoes and deep hot springs rife with never-before-seen extreme microbes. Reves-Sohn knew the region would teach him and other scientists new lessons about how Earth's plates move and what lies beneath them—so he had to go there, and soon. ...

Originally Posted by Freezacano

Let us know what the GE community comes up with.

Our friend over there has responded positively. No exclusively underwater volcano list exists yet at GE, and having one is a good idea. The seed is planted.

[freeztar]

Originally Posted by Turtle

I think before this gets out of hand we ought to make a simple notepad file to record coordinates. Oui/no? Names too of course if they have them.

Indeed, but could I recommend an excel spreadsheet instead. It's tidier and easy to search, organize, etc.

Our friend over there...

You mean Hill?
Where the heck has he been (besides GE community of course)?

[Turtle]

Originally Posted by freeztar

Indeed, but could I recommend an excel spreadsheet instead. It's tidier and easy to search, organize, etc.

Well, I don't have that.

Originally Posted by Free Soup

You mean Hill?
Where the heck has he been (besides GE community of course)?

I can't mention names, but his inititial starts with Hill yes. I expect he'll be along as soon as time allows. ..........

[freeztar]

Ok, here it is.
I suppose the list is still in the process of being compiled. If you've updated it since you posted the text file, resend it and I'll update the excel file.

Btw, you can download the free program open office and it comes with an excel equivalent spreadsheet program. It will open excel documents, though I've had problems saving from that program and then opening the excel file in excel. It was always jumbled, but perhaps they've fixed that since then (about 2 years ago). It's worth a shot.

Why did you convert all the lat/longs to decimals rather than leave it at minutes? Unless of course, you are getting those from somewhere (other than wiki) that has it already in decimal form...