Well, a bit more “Settle Science”…
Seems we’ve figured out that we really don’t know what is happening on the ocean floor in terms of volcanic venting of massive amounts of heat and gasses after all…
(h/t to Scarlet Pumpernickel )
Hydrothermal “Megaplume” Found in Indian Ocean
for National Geographic News
December 12, 2005
Yes, that’s 2005, but I still like the article…
An enormous hydrothermal “megaplume” found in the Indian Ocean serves as a dramatic reminder that underwater volcanoes likely play an important role in shaping Earth’s ocean systems, scientists report.
The plume, which stretches some 43.5 miles (70 kilometers) long, appears to be active on a previously unseen scale.
“In a nutshell, this thing is at least 10 times—or possibly 20 times—bigger than anything of its kind that’s been seen before,” said Bramley Murton of the British National Oceanography Centre.
Scientists reported the finding last week at the fall meeting of the American Geophysical Union (AGU) in San Francisco. Researchers also announced newly discovered deep-sea hydrothermal fields in the Arctic Ocean and the south Atlantic.
The appearance of hydrothermal vents around the world suggests that they are a far more common part of the ocean system than once believed and could be a major influence on circulation patterns and ocean chemistry.
“I’d be surprised if in the next five years we didn’t experience a mini-revolution in terms of finding these [fields] in places where they are not supposed to exist,” said geophysicist Robert Reves-Sohn of the Woods Hole Oceanographic Institution.
Hydrothermal vents are volcanic hotspots that emit gasses and mineral-enriched water as hot as 760°F (400°C). The heat from these vents supports unique ecosystems where creatures survive using thermal and chemical energy in place of sunlight.
Megaplumes like the one found in the Indian Ocean are probably caused by undersea volcanic eruptions, though scientists aren’t yet certain.
“Once formed they can possibly hang around for years,” Murton said. The heat from such events could have a dramatic effect on ocean circulation, which plays a role in determining Earth’s climate.
“The energy content is an order of magnitude greater [than ordinary plumes], and the thermal power may be many orders of magnitude greater,” Murton said.
“A normal hydrothermal vent might produce something like 500 megawatts, while this is producing 100,000 megawatts. It’s like an atom bomb down there.”
Recent studies have attempted to factor the heat from the world’s known hydrothermal ridges into ocean circulation models.
“Some studies estimate that for the Pacific, background thermal heating might increase ocean circulation by up to 50 percent,” Murton said.
Regular hydrothermal fields stir the water for only a few hundred meters (about a thousand feet) above the ocean floor. “But these megaplumes can reach a column of 1,000 to 1,500 meters [3,280 to 4,920 feet], so it reaches right up into the midwater,” he said.
But even the Indian Ocean megaplume may be small compared to larger underwater eruptions that have as yet gone undetected.
The new data on hydrothermal fields and megaplumes underscores the fact that volcanic activity on the ocean floor remains a largely mysterious phenomenon.
“Ninety percent of the Earth’s volcanic activity takes place underwater,” Murton said. “Just because we can’t see it doesn’t mean it’s not there.”
So we know we are substantially clueless about 90% of the global volcanic activity, that it has a massive energy and CO2 output, and that it varies in ways we do not ken. It stirs the ocean from great depth to much higher levels than we ever thought, and “is like an atom bomb” in terms of energy; but can run for years…
Yeah, so much for “settled science”…
So riddle me this (Batman):
How in the world can we know if, for example, the reason volcanoes and cold periods come together along with C02 changes, might be just that the volcanic system gets going really hot, dumps a lot of gasses and heat in to the ocean, and sets off a load of quakes and volcanoes on land too. The net effect off all the CO2 in the ocean being a shift of C12 / C13 ratio and the overturning of a load of cold ocean water to the surface. Get those sub ocean spreading ridges going faster and who knows WHAT is going to be the result. We assume they run at a constant rate, yet we know that volcanic processes are subject to long cycle times and quasi-periodic fluctuations. Why would the sub-ocean parts be any different?
How much CO2 do the sub-ocean volcanoes put out?
How does it vary over time?
With what isotopic structure?
How much heat?
Is it that added heat, or the pumping of deep cold water upward, or just the general increase in circulation rate that matters? And what does it do?
“Climate Scientists” are just too damn ignorant to even realize the depths of their ignorance. Too filled with hubris and ego to see the truly interesting things we could be learning. And they have spent far too much time “sucking their own exhaust” to “wake up and smell the volcanoes”…
If the recent increase in volcanoes above the surface is matched, but 10 times over, below the surface, there is one heck of a lot of “something going on”. And just because it is out of sight, does not mean it ought to be out of mind.
FWIW, There is a nice article on the same topic at WUWT that has decent video and some more discussion: