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Navigating beneath Arctic ice

Massachusetts Institute of Technology
There is a lot of activity beneath the vast, lonely expanses of ice and snow in the Arctic. Climate change has dramatically altered the layer of ice that covers much of the Arctic Ocean. Areas of water that used to be covered by a solid ice pack are now covered by thin layers only 3 feet deep. Beneath the ice, a warm layer of water, part of the Beaufort Lens, has changed the makeup of the aquatic environment.
For scientists to understand the role this changing environment in the Arctic Ocean plays in global climate change, there is a need for mapping the ocean below the ice cover. ....

Oscar Viquez , Arctic Sea , Daniel Goodwin , Bradli Howard , Zeeshan Bhatt , Henrik Schmidt , Toby Schneider , Supun Randeni , Arthur Baggeroer , Arctic Ocean , Josiah Delange , Rui Chen , Dan Mcdonald , Hole Oceanographic Institution Joint Program , Office Of Naval Research , Us Navy , Mission Systems , Laboratory For Autonomous Marine Sensing Systems , Arctic Submarine Lab , Woods Hole Oceanographic Institution , Beaufort Lens , Autonomous Marine Sensing Systems , Naval Research , Rice Exercise , General Dynamics Mission Systems , ஆர்க்டிக் கடல் ,

Navigating beneath the Arctic ice

Credits:
Credit: Troy Barnhart, Chief Petty Officer, U.S. Navy
Caption:
The research team prepares to deploy an autonomous underwater vehicle built by General Dynamics Mission Systems to test their navigational concept.
Credits:
Credit: Daniel Goodwin LCDR, USN
Caption:
After a series of setbacks and challenges due to the unforgiving conditions in the Arctic, the team was able to retrieve the autonomous underwater vehicle and successfully prove their navigational concept worked.
Credits:
Credit: Dan McDonald, General Dynamics Mission Systems
Caption:
A team including Professor Henrik Schmidt, MIT-WHOI Joint Program graduate students Daniel Goodwin and Bradli Howard, members of the Laboratory for Autonomous Marine Sensing Systems, and the Ar ....

Oscar Viquez , Arctic Sea , Daniel Goodwin , Bradli Howard , Zeeshan Bhatt , Henrik Schmidt , Toby Schneider , Supun Randeni , Arthur Baggeroer , Arctic Ocean , Josiah Delange , Rui Chen , Dan Mcdonald , Hole Oceanographic Institution Joint Program , Office Of Naval Research , Us Navy , Mission Systems , Laboratory For Autonomous Marine Sensing Systems , Arctic Submarine Lab , Woods Hole Oceanographic Institution , Beaufort Lens , Autonomous Marine Sensing Systems , Naval Research , Rice Exercise , General Dynamics Mission Systems , Beaufort Lens ,

Navigating beneath the Arctic ice

Navigating beneath the Arctic ice
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Oscar Viquez , Mary Beth Gallagher , Troy Barnhart , Arctic Sea , Daniel Goodwin , Bradli Howard , Zeeshan Bhatt , Henrik Schmidt , Toby Schneider , Supun Randeni , Arthur Baggeroer , Arctic Ocean , Josiah Delange , Rui Chen , Dan Mcdonald , Office Of Naval Research , Massachusetts Institute Of Technology , Laboratory For Autonomous Marine Sensing Systems , Arctic Submarine Lab , Hole Oceanographic Institution Joint Program , Us Navy , Mission Systems , Woods Hole Oceanographic Institution , Beaufort Lens , Chief Petty Officer , Autonomous Marine Sensing Systems ,

Ancient atmospheric oxygen sleuthing with ocean chromium

Credits:
Photo: Kelsy Cain
Next image
Found in jewelry, car parts, pigments, and industrial chemical reactions, the metal chromium and its compounds are often employed for their color, finish, and anti-corrosive and catalytic properties. Currently, geoscientists and paleoceanographers from MIT and the Woods Hole Oceanographic Institution (WHOI) are looking to add another use to that list: as a way to examine chemical shifts in ancient Earth’s oceans and atmosphere that are preserved in the seafloor’s paleorecord. More specifically, they want to reconstruct rising atmospheric oxygen levels, which began around 2.4 billion years ago, and their effect on the seas. Since biology and the environment are intimately intertwined, this information could help illuminate how the Earth’s life and climate evolved. ....

Tianyi Huang , Pacific Ocean , Ed Boyle , Hole Oceanographic Institution Joint Program , Proceedings Of The National Academy Sciences , Department Of Earth , Elementar Corporation , National Science Foundation , Planetary Sciences , Woods Hole Oceanographic Institution , National Academy , Simone Moos Phd , Great Oxidation Event , North Pacific Ocean , National Science , Mit Eaps , Mit Whoi Joint Program , Oceans And Climate , Simone Moos , Oxygen Deficient Zone Odz , Chromium 52 , Chromium 53 , Cr Iii , Cr Vi , பெஸிஃபிக் கடல் , எட் பாயில் ,