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Tag: submersible

Logs from a majestic pit of acid: Diving Belize’s Blue Hole with Erika Bergman.

Posted on February 5, 2019February 21, 2019 By Erika Bergman
Logs from a majestic pit of acid: Diving Belize’s Blue Hole with Erika Bergman.
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In November of 2018 Aquatica Submarines shipped a three person submarine, Stingray 500, across frosty North America on the back of a truck then over the rolling winter seas of the Gulf of Mexico to Belize aboard the R/V Brooks McCall. Our destination was a site located 7 miles into Lighthouse Reef – a perfect sinkhole in the ocean known as the Great Blue Hole. We traveled to this UNESCO World Heritage site to explore and document a geologic phenomenon in support of conservation science and to conduct outreach. Our mission was two fold, map the Great Blue Hole using high resolution sonar and take people worldwide on this journey with us on broadcast TV. Everything we collected, from CTD data and dissolved oxygen content, to video footage and experiential data, gives us the fodder we need to tell a story about an unusual place on our planet most people have never seen, until now.

Photo courtesy Aquatica Submarines.

Geology from not-a-geologist

Over the past 14,000 years the polar ice caps, formed during the last glacial maximum, have thawed and raised sea level in steps. These defrosting events are captured in a stone record of an oceanic sinkhole in Belize. The aptly named Great Blue Hole is a collapsed cave, filled with stalactite caverns, and built up from layers of fine limestone and rougher calcium carbonate walls. The stepped rise of sea level can be seen in the form of terraces carved deeply by erosion into the otherwise vertical rock walls. Straight vertical stretches of wall are free of erosion because sea level rose rapidly during a few brief decades between each step. As each melting event took place sea level rose dramatically, as much as 100 feet in 100 years, followed by centuries of stability. Preserved from the disturbance of time, and isolated in the darkness, the hole holds clues to a very natural part of our planet’s life cycle. It’s these terraces and stalactites we set out to map.

Photo courtesy Aquatica Submarines.

Read More “Logs from a majestic pit of acid: Diving Belize’s Blue Hole with Erika Bergman.” »

How goats got the bends, a new ship for VIMS, a new deep-sea submersible for all of us, our looming destruction, and more! Monday Morning Salvage: October 15, 2018.

Posted on October 15, 2018 By Andrew Thaler
Weekly Salvage

Foghorn (A Call to Action!)

  • It ain’t going to be easy, but it isn’t over yet and none of us have earned the right to quit. What genuine, no-bullshit ambition on climate change would look like.

Flotsam (what we’re obsessed with right now)

  • Goats are magnificent. We don’t deserve goats. The Dark Story of How Scientists Used Goats to Solve the Bends.

Bends in the foreleg of a goat after experiments performed by physiologist John S. Haldane, published in the Journal of Hygiene Vol. 8, 1908.
Bends in the foreleg of a goat after experiments performed by physiologist John S. Haldane, published in the Journal of Hygiene Vol. 8, 1908.

  • There’s a new full-ocean capable submarine in town, and for $50 million, you could buy it! Discovery and Science Channel to Document the Five Deeps Expedition in Limited Series.

Submersible. Photo courtesy Discovery.
Photo courtesy Discovery.

Read More “How goats got the bends, a new ship for VIMS, a new deep-sea submersible for all of us, our looming destruction, and more! Monday Morning Salvage: October 15, 2018.” »

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