Antarctica News

GEOTRACES carousel deployment showing Cortland cable. Image: Cortland

Case Study: Cables in Underwater Missions

the custom cable for dozens of missions, in regions as diverse as the Arctic to the tropical waters of Polynesia. It has proven ideal for the expeditions, carried out every two years since 2008. It is set to be deployed again in 2021. Near identical cables are now in use in China, Germany, India and Antarctica.We’ve learned through experience that cables used in dynamic subsea environments have to be custom designed and built for the specific harsh environments our customers encounter. The properties of synthetic strength members and outer jackets can make the difference to scientific expeditions

© Ivan Kurmyshov / Adobe Stock

The Oceans Are Warming Faster than Expected

Reuters.Among effects, extra warmth can reduce oxygen in the oceans and damages coral reefs that are nurseries for fish, the scientists said. Warmer seas release more moisture that can stoke more powerful storms.Warmer ocean water also raises sea levels by melting ice, including around the edges of Antarctica and Greenland.(Reporting By Alister Doyle; editing by John Stonestreet

Figure 1: Sea ice extent for January 1, 2019 (Photo: NSIDC)

A Record-Low Start to Ice the New Year in Antarctica

, which began during the austral spring of 2016, contradicts prior characterizations of Antarctic sea ice cover as slowly expanding, yet highly variable. Instead, another strong decline through late December 2018 has taken the extent below the November and December 2016 levels to new record lows. Antarctica’s high year-to-year variability (record high extents for December were observed as recently as 2014 and 2007) suggests that a conclusive sea ice trend associated with the warming air and ocean around Antarctica has yet to reveal itself.Spatial patterns of lossThe rapid ice loss through December

The frame and instruments as they were when they washed up. Photo: NOC

Lost @ Sea: Missing Equipment Washes Up Five Years Later

Center (NOC) has just been found on a beach in Tasmania by a local resident after making a 14,000 km journey across the ocean.In 2011, this deep-ocean lander instrument was deployed by NOC scientists in the northern Drake Passage, which is a narrow section of the ocean between South America and Antarctica. Measuring ocean bottom pressure here helps provide information on the Antarctic Circumpolar Current, which is the largest ocean current in the world. The instrument was due to spend two years collecting data at a depth of 1100 metres, before being recovered on Christmas Day in 2013 by a research

Crevasses near the grounding line of Pine Island Glacier, Antarctica. (Credits: University of Washington/I. Joughin)

Accelerating Antarctic Thaw Speeds Sea Level Rise

An accelerating thaw of Antarctica has pushed up world sea levels by almost a centimeter since the early 1990s in a risk for coasts from Pacific islands to Florida, an international team of scientists said on Thursday.Antarctica has enough ice to raise seas by 58 meters (190 ft) if it ever all melted, dwarfing frozen stores in places from Greenland to the Himalayas and making its future the biggest uncertainty in understanding global warming and ocean levels.The frozen continent lost almost three trillion tonnes of ice between 1992 and 2017, the 84 scientists said in what they called the most complete

(File photo courtesy of Liquid Robotics)

Wave Gliders to Study Arctic and Southern Oceans

;Working together with Liquid Robotics, a wholly owned subsidiary of The Boeing Company, these top oceanographers have conducted long duration scientific missions in the Arctic, Pacific, Southern and the North Atlantic oceans. Exploring the vast, remote regions of our ocean, especially in the Arctic and Antarctica, is incredibly challenging. Deploying Wave Gliders in the most energetic sea conditions on Earth will help scientists gain a better understanding and modeling of our changing planet.“In 2016, we successfully completed a three month, 2,000km mission in the Southern Ocean where the Wave Glider

(courtesy 
Volvo Ocean Race)

Video: Prince Charles Addresses Ocean Summit

collected from the seas is critically important for the scientific community.“Looking at the data collected it is deeply troubling to see how highly pervasive microplastics have become. Samples have even been discovered in what we once would’ve considered to be the pristine environment of Antarctica.”In Partnership with the UN Environment Clean Seas campaign, the Ocean Summits offer business, government, organizations and ocean advocates a platform to showcase robust, scientifically based content aimed at generating discussion and innovative solutions to the plastic crisis.  Prince

Photo: Ole Jørgen Bratland / Statoil

Arctic Oil 'Undrillable' amid Global Warming -UN's Ex-climate Chief

by almost 200 nations in 2015, told Reuters by telephone "the Arctic has been rendered undrillable."The past three years have been the hottest since records began in the 19th century, and Figueres said the heat was a threat to everything from Australia's Great Barrier Reef to ice in Antarctica.The former Costa Rican diplomat who campaigns for a peak in global emissions by 2020 said it made no economic sense to explore in the Arctic, partly because it was likely to take years to develop any finds.Capital investment would be better used developing renewable energies such as solar and wind

© kavring / Adobe Stock

Icebergs Could Float to the Rescue of Cape Town Water Crisis

Marine salvage experts are floating a plan to tug icebergs from Antarctica to South Africa's drought-hit Cape Town to help solve the region's worst water shortage in a century.Salvage master Nick Sloane told Reuters he was looking for government and private investors for a scheme to guide huge chunks of ice across the ocean, chop them into a slury and melt them down into millions of liters of drinking water."We want to show that if there is no other source to solve the water crisis, we have another idea no one else has thought of yet," said Sloane, who led the refloating of the

(Illustration by Natalie Renier, Woods Hole Oceanographic Institution)

Atlantic Ocean Circulation at Weakest Point in 1,600 Years

moving system of deep-water circulation, sometimes referred to as the Global Ocean Conveyor Belt, sends warm, salty Gulf Stream water to the North Atlantic where it releases heat to the atmosphere and warms Western Europe. The cooler water then sinks to great depths and travels all the way to Antarctica and eventually circulates back up to the Gulf Stream.“Our study provides the first comprehensive analysis of ocean-based sediment records, demonstrating that this weakening of the Atlantic’s overturning began near the end of the Little Ice Age, a centuries-long cold period that lasted

Autonomous underwater vehicle Boaty McBoatface (Photo: NOC)

Boaty McBoatface Completes First Antarctic Mission

The National Oceanography Center’s (NOC) autonomous underwater vehicle (AUV) Autosub Long Range (ALR), known affectionately around the world as ‘Boaty McBoatface’, was recovered last month following its first under-ice mission beneath the Filchner Ice Shelf in West Antarctica.From January to February 2018, the AUV was deployed in the southern Weddell Sea during RV Polarstern cruise PS111 as part of the Filchner Ice Shelf System (FISS) Project – a collaboration involving leading U.K. research institutions including the NOC, British Antarctic Survey (BAS), Met Office Hadley Center

Marine Technology Magazine Cover May 2019 - Underwater Defense Technology

Marine Technology Reporter is the world's largest audited subsea industry publication serving the offshore energy, subsea defense and scientific communities.

Subscribe
Marine Technology ENews subscription

Marine Technology ENews is the subsea industry's largest circulation and most authoritative ENews Service, delivered to your Email three times per week

Subscribe for MTR E-news