New Giant Volcano Below Sea Is Largest in the World
2013-09-05 0:00

By Brian Clark Howard | National Geographic

Tamu Massif in the northwest Pacific challenges traditional views of ocean science.



A volcano the size of New Mexico or the British Isles has been identified under the Pacific Ocean, about 1,000 miles (1,600 kilometers) east of Japan, making it the biggest volcano on Earth and one of the biggest in the solar system.

Called Tamu Massif, the giant shield volcano had been thought to be a composite of smaller structures, but now scientists say they must rethink long-held beliefs about marine geology.

“This finding goes against what we thought, because we found that it’s one huge volcano,” said William Sager, a geology professor at the University of Houston in Texas. Sager is lead author in a study about the find that was published this week in the peer-reviewed journal Nature Geoscience.

“It is in the same league as Olympus Mons on Mars, which had been considered to be the largest volcano in the solar system,” Sager told National Geographic.

Tamu Massif is a rounded dome that measures about 280 by 400 miles (450 by 650 kilometers), or more than 100,000 square miles. Its top lies about 6,500 feet (about 2,000 meters) below the ocean surface, while the base extends down to about 4 miles (6.4 kilometers) deep. Tamu Massif dwarfs the largest active volcano on Earth, Mauna Loa in Hawaii, which measures about 2,000 square miles (5,200 square kilometers).

Made of basalt, Tamu Massif is the oldest and largest feature of an oceanic plateau called the Shatsky Rise in the northwestern Pacific Ocean. The total area of the rise is similar to Japan or California.

Sager started studying Tamu Massif about 20 years ago. He named it Tamu Massif because Tamu is short for Texas A&M University, where the scientist worked at the time; massif is French for “massive” and is a scientific term for a large mountain.

[...]


Read the full article at: nationalgeographic.com





Related Articles
Fire, Lava & Smoke: Video of Erupting Russian Volcano
Scientist argues that volcanoes, not meteorite, killed dinosaurs
New Zealand volcano erupts after century of quiet
What if Yellowstone’s supervolcano erupts?
Secrets of Volcano Lightning Probed During Alaska Eruption
Rapidly Inflating Volcano Creates Growing Mystery
Scientists to Create “Artificial Volcano” In Bid to Geoengineer Climate


Latest News from our Front Page

The Jewish Roots of Leonard Nimoy and What the ‘Live Long and Prosper’ Hand Symbol Really Means
2015-02-28 0:20
Leonard Nimoy first saw what became the famous Vulcan salute, “live long and prosper,” as a child, long before “Star Trek” even existed. The placement of the hands comes from a childhood memory, of an Orthodox Jewish synagogue service in Boston. The man who would play Spock saw the gesture as part of a blessing, and it never left him. “Something ...
Baby born still INSIDE his amniotic sac is hailed a ‘medical miracle’ by doctors [Video]
2015-02-27 22:46
What an incredible miracle… Not only was the little boy three months early – he was born inside his amniotic sac. I’ve never heard of this happening before. If you look at the picture, you can see him clearly with his little arms and legs curled up. He was still being given oxygen by his mom until the sac was ...
California Infant Dies after 8 Vaccines, Family Gets Him Back from Hospital Cremated
2015-02-27 21:55
Parents in California are distraught after losing their infant son after being vaccinated. He died in his sleep and was taken to the hospital already deceased. Hospital staff ruled his death as sudden infant death syndrome. The couple was told an autopsy was required to be performed on their son. After returning home, waiting to get an update, they never received ...
DNA: Data-storage for eternity
2015-02-27 20:57
How can we preserve our knowledge today for the next millennia? ETH researchers have found a way to store information in the form of DNA, preserving it for nearly an eternity. Scrolls thousands of years old provide us with a glimpse into long-forgotten cultures and the knowledge of our ancestors. In this digital era, in contrast, a large part of our ...
Hypercleanliness is making us sick - Children develop allergies and eczema
2015-02-27 20:31
Could using a dishwashing machine increase the chances your child will develop allergies? That's what some provocative new research suggests — but don't tear out your machine just yet. The study involved 1,029 Swedish children (ages 7 or 8) and found that those whose parents said they mostly wash the family's dishes by hand were significantly less likely to develop eczema, ...
More News »