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Volcanoes


Rambling Atop an Active Volcano to Detect Telltale Rumbling Within It

Rambling Atop an Active Volcano to Detect Telltale Rumbling Within It

With machete in hand and 60 pounds of satellite receiver and tripod on his back, Jeff Standish looked up into the lush tropical brush that covered the volcano, up a steep escarpment, and up again to the summit 3,000 feet above sea level. Then he turned to Rhea Workman, a graduate student in the WHOI/MIT Joint Program, and said, “We’re going up where?”

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Transmitting Sound Energy

The SOFAR channel efficiently transmits sound energy in the ocean. By Deborah K. Smith :: Originally published online August 3,…

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Ears in the Ocean

Ears in the Ocean

If you sought to delve into the forces that drive and shape the face of the earth and that distinguish it from all other planets in our solar system, you would shine a spotlight on the mid-ocean ridges.

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Scientists Find Active Underwater Volcano East of Samoa

Marine geologists from the Woods Hole Oceanographic Institution (WHOI) and the Scripps Institution of Oceanography (SIO) have confirmed the existence of an active underwater volcano east of Samoa. The volcano, recently named VailuluA?u by local students, is located about 28 miles east of TaA?u Island and rises more than 16,400 feet from the seafloor to within 2,000 feet of the ocean surface. The scientists found billowing “smoggy” water in the summit and extending out for more than five miles.

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Active 14,000 Foot Submarine Volcano Found near Samoa in South Pacific

An active volcano rising more than 4,300 meters (over 14,100 feet) from the ocean floor in the Samoa Islands has been discovered by a team of U.S. scientists, providing more evidence to the scientific debate over the formation of hot spot island chains. The volcano, more than 35 kilometers (about 22 miles) across at its base, rises to within 600 meters (about 2,000 feet) of the surface; its peak is marked by a circular caldera some two kilometers (over 1 mile) across and 400 meters (1,300 feet) deep. It is similar in size to Mt. Whitney in California, the largest mountain in the contiguous 48 U.S. states.

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The Magnetic Thickness of a Recent Submarine Lava Flow

The Magnetic Thickness of a Recent Submarine Lava Flow

Submarine lava flows and their associated narrow feeder conduits known as dikes constitute the basic building blocks of the upper part of the ocean crust. We are only beginning to understand how lava erupts and forms on the seafloor by flooding topographic lows, flowing through channels or tubes, centralizing into volcanoes, or some combination of all of these.

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