Scientists probing under the seafloor off Alaska have mapped a geologic structure that they say signals potential for a major tsunami in an area that normally would be considered benign.
Centers, Projects & Initiatives
July 31, 2017
November 14, 2016
Scientists analyzing a volcanic eruption at a mid-ocean ridge under the Pacific have come up with a somewhat contrarian explanation for what initiated it. Many scientists say undersea volcanism is triggered mainly by upwelling magma that reaches a critical pressure and forces its way up. The new study says the dominant force, at least in this case, was the seafloor itself – basically that it ripped itself open, allowing the lava to spill out. The eruption took place on the East Pacific Rise, some 700 miles off Mexico.
August 13, 2009
“Drain the Ocean” will be aired Sunday, August 16, 2 p.m. on the National Geographic channel. The special put computer-generated imagery and digital mapping technology to imaginative use through showing what the oceans would look like if all their water was emptied through an imaginary drain. The result would be a landscape far more dramatic than anything on dry land, including a 40,000 mile-long mountain range, the world’s deepest canyon and widest plains, and bizarre, bioluminescent life forms
November 20, 2006
Ordinarily, losing almost all of one's instruments would be considered a severe setback to any scientist. But when Maya Tolstoy, a marine geophysicist at the Lamont-Doherty Earth Observatory and the Earth Institute at Columbia University, recently learned that two-thirds of the seismometers she placed on the floor of the Pacific Ocean were trapped more than 8,000 feet (2500 meters) underwater, it turned out to be an extremely good sign.
August 23, 2006
Marie Tharp, a pathbreaking oceanographic cartographer at the Lamont-Doherty Earth Observatory, co-creator of the first global map of the ocean floor and co-discoverer of the central rift valley that runs through the Mid-Atlantic Ridge died Wednesday August 23 in Nyack Hospital. She was 86.
|Shocking Exposures Images that Changed Science|
|Seafloor Earthquakes: Maya Tolstoy at TEDxCERN|
|The Ocean Floor||What We Know and How We Know It|
|Deep Time||The History of Our Planet Revealed|
|The Science Behind Aliens of the Deep||Part of the Public Lecture Series|
|Revealing the Deep||Science and Engineering in Deep Ocean Exploration|