But this sort of makes sense.
Scientists Map 'New Frontier' Deep Within OceanMarine Technology Reporter
10/06/1006
Although just 100 miles off the New Jersey-New York coast, the features of the Hudson Canyon have been largely hidden beneath hundreds of feet of water. Created by the Hudson River centuries ago, parts of the massive, undersea region rival the Grand Canyon in scale. Now, for the first time, scientists have a vivid picture of what the mysterious region looks like.
A four-year study using high-tech tools has produced maps of an undersea region the size of Connecticut.
Scientists said the maps will allow them to study many things, including whether methane gas trapped in frozen sediment below the sea floor is escaping and exacerbating global warming. Also of interest is whether gas releases could spark undersea landslides that produce tsunamis. In addition to producing giant waves, landslides could cleave the undersea phone cables that handle much of the nation's overseas communications, said Peter A. Rona, a Rutgers University professor who led the team that produced the maps.
The map "adds significant new detail to the Hudson Canyon subsea landscape," said William Ryan, a senior scholar at the Lamont-Doherty Earth Observatory of Columbia University. "The map reveals for the first time all of the tributaries of an extraordinary underwater drainage network that is strikingly similar to terrestrial rivers." Indeed, the undersea canyon acts at times like a river, Ryan said, noting, "Tidal currents sweep up and down the channel. On occasion during big storms cold ocean water is pushed up the Hudson Canyon to spread out on the shelf."
http://www.mtronline.net/mt/mtStories.aspx?ShowStrory=1006022045Methane clathrate, also called methane hydrate or methane ice, is a form of water ice that contains a large amount of methane within its crystal structure (a clathrate hydrate). Originally thought to occur only in the outer regions of the solar system where temperatures are low and water ice is common, extremely large deposits of methane clathrate have been found under sediments on the ocean floors of Earth.
http://en.wikipedia.org/wiki/Methane_clathrateSudden release from methane clathrates
At high pressures, such as are found on the bottom of the ocean, methane forms a solid clathrate with water, known as methane hydrate. An unknown, but possibly very large quantity of methane is trapped in this form in ocean sediments. The sudden release of large volumes of methane from such sediments into the atmosphere has been suggested as a possible cause for rapid global warming events in the Earth's distant past, such as the Paleocene-Eocene thermal maximum of 55 million years ago.
One source estimates the size of the methane hydrate deposits of the oceans at ten million million tons (10 exagrams). Theories suggest that should global warming cause them to heat up sufficiently, all of this methane could again be suddenly released into the atmosphere. Since methane is twenty-three times stronger (for a given weight, averaged over 100 years) than CO2 as a greenhouse gas; this would immensely magnify the greenhouse effect, heating Earth to unprecedented levels (see Clathrate gun hypothesis).
http://en.wikipedia.org/wiki/Methane#Sources_of_methaneI sure hope this isn't the explanation. Someone please tell me why this can't be the explanation.