This video is about 12 underwater volcanoes discovered near the South Sandwich Islands.
From Wildlife Extra:
Underwater Antarctic volcanoes discovered in the Southern Ocean
South Sandwich Islands provide rich habitat
July 2011. Scientists from British Antarctic Survey (BAS) have discovered previously unknown volcanoes in the ocean waters around the remote South Sandwich Islands. Using ship-borne sea-floor mapping technology during research cruises onboard the RRS James Clark Ross, the scientists found 12 volcanoes beneath the sea surface – some up to 3km high. They found 5km diameter craters left by collapsing volcanoes and 7 active volcanoes visible above the sea as a chain of islands.
Rich habitat
The research is important also for understanding what happens when volcanoes erupt or collapse underwater and their potential for creating serious hazards such as tsunamis. Also this sub-sea landscape, with its waters warmed by volcanic activity creates a rich habitat for many species of wildlife and adds valuable new insight about life on earth.
Researchers led by David Sandwell at Scripps Institution of Oceanography at UC San Diego have used radar measurements from the satellites CryoSat-2 and Jason-1 to produce a new gravity map of Earth’s ocean floor, one twice as accurate as the previous one made nearly 20 years ago. Previously undiscovered features found include an underwater mountain range in the Gulf of Mexico, a major fault line in the South Atlantic Ocean, many smaller hill-like features on the ocean floor and thousands of previously unknown underwater mountains and volcanoes: here.
Related articles
- Immense Underwater Volcano Is The Biggest On Earth (npr.org)
- Massive underwater mountains churn Antarctic waters (nbcnews.com)
- Surprising underwater-sounds: Humpback whales also spend their winter in Antarctica (oceansspirit.wordpress.com)
- What do you know about Hawaii’s Volcanoes? (pacificislandparks.com)
- Surprisingly, some humpback whales stay in Antarctic for winter (nbcnews.com)
- 76: Airlines told to avoid flights near erupting Indonesian volcano- unrest reported at another Japanese volcano (theextinctionprotocol.wordpress.com)
- Surprising underwater-sounds: Humpback whales also spend their winter in Antarctica (sciencedaily.com)
Earth’s biggest volcano found to lurk under Pacific:
Its existence was known, but not whether it was one
volcano or many.
http://www.world-science.net/othernews/130906_TamuMassif
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