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Arctic ocean history is deciphered by ocean-drilling research team
June 21, 2007Washington, DC -- Sediment cores retrieved from the Arctic's deep-sea floor by the Integrated Ocean Drilling Program's Arctic Coring Expedition (ACEX) have provided long-absent data to scientists who report new findings in the June 21 issue of Nature. A team of ACEX researchers report that the Arctic Ocean changed from a landlocked body of water (a 'lake stage') through a poorly oxygenated 'estuarine sea' phase to a fully oxygenated ocean at 17.5 million years ago during the latter part of the early Miocene era. The authors attribute the change in Arctic conditions to the evolution of the Fram Strait into a wider, deeper passageway that allowed an inflow of saline North Atlantic water into the Arctic Ocean. Scientists believe that the deep-water connection between the northern Atlantic and Arctic Oceans is a key driver of global ocean circulation patterns and global climate change.
In 2004, the offshore ACEX research team cored a 428-meter thick sediment sequence from the crest of the Lomonosov ridge in the central Arctic Ocean, near the North Pole. These sediments provide the first geological validation of the Cenezoic paleoenvironmental history of the Arctic Ocean. Current evidence of the onset of the ventilated circulation system is preserved in the chemical and physical properties and the micropaleontology of the recovered seafloor sediments.
Co-chief scientist Jan Backman, Stockholm University, comments on the significance of the new findings, saying, "If we can learn what has happened in the geological past, we can begin to use that knowledge to look into the future. Scientists engaged in climate change studies are advancing an important area of knowledge about the planet we live on."
Integrated Ocean Drilling Program Management International
Integrated Ocean Drilling Program Management International
Arctic Ocean Current Events and Arctic Ocean News RSSA bubbling ball of gas
The Sun is a bubbling mass. Packages of gas rise and sink, lending the sun its grainy surface structure, its granulation. Dark spots appear and disappear, clouds of matter dart up - and behind the whole thing are the magnetic fields, the engines of it all.
Cave Study Links Climate Change to California Droughts
California experienced centuries-long droughts in the past 20,000 years that coincided with the thawing of ice caps in the Arctic.
Last time carbon dioxide levels were this high: 15 million years ago, scientists report
You would have to go back at least 15 million years to find carbon dioxide levels on Earth as high as they are today, a UCLA scientist and colleagues report Oct. 8 in the online edition of the journal Science.
NASA flies to Antarctica for largest airborne polar ice survey
NASA begins a series of flights Oct. 15 to study changes to Antarctica's sea ice, glaciers and ice sheets. The flights are part of Operation Ice Bridge, a six-year campaign that is the largest airborne survey ever made of ice at Earth's polar regions.
Arctic Sea ice extent is third lowest on record
U.S. satellite measurements show Arctic sea ice extent in 2009 - the area of the Arctic Ocean covered by floating ice - was the third lowest since satellite measurements were first made in 1979.
Satellites and submarines give the skinny on sea ice thickness
This summer, a group of scientists and students - as well as a Canadian senator, a writer, and a filmmaker - set out from Resolute Bay, Canada, on the icebreaker Louis S. St-Laurent.
NASA, CU-Boulder airborne expedition chases Arctic sea ice questions
A small NASA aircraft completed its first successful science flight Thursday in partnership with the University of Colorado at Boulder as part of an expedition to study the receding Arctic sea ice and improve understanding of its life cycle and the long-term stability of the Arctic ice cover.
Arctic climate under greenhouse conditions in the Late Cretaceous
New evidence for ice-free summers with intermittent winter sea ice in the Arctic Ocean during the Late Cretaceous - a period of greenhouse conditions - gives a glimpse of how the Arctic is likely to respond to future global warming.
Mercury in Mackenzie River delta dramatically higher than previously believed
University of Alberta researchers conducting a water study in the Mackenzie River Delta have found a dramatically higher delivery of mercury from the Mackenzie River to the Arctic Ocean than determined in previous studies.
New cleaning protocol for future 'search for life' missions
Scientists have developed a new cleaning protocol for space hardware, such as the scoops of Mars rovers, which could be used on future "Search for Life" missions on other planets.
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The Arctic Ocean: A Guide to the Coastal Wildlife (Bradt Guides) by Tony Soper (Author), Dan Powell (Illustrator) A barren and inhospitable region for most of the year, the Arctic is permanent home to just a handful of hardy creatures. But come the summer, the wind stirs the waters to bring minerals to the surface, nourishing the plankton that in turn attracts numerous birds and sea mammals to these shores. For just a few short months of almost endless daylight, the winter inhabitants of the Arctic fringes are joined by numerous shorebirds and waterfowl, seals and whales, all taking advantage of the abundance of food before heading south to avoid the harsh winter. Tony Soper's lively text provides the perfect companion to an exploration of the coastal regions of the Arctic and its inhabitants. Enhanced by specially commissioned watercolor paintings, this book will bring added insight to those... |
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Seven Natural Wonders of the Arctic, Antarctica, and the Oceans (Seven Wonders) by Michael Woods (Author), Mary B. Woods (Author) Without any human influence, nature has created extraordinary wonders - from majestic mountains and bubbling volcanoes to amazing plants and animals. These wonders are found across all the continents and oceans of this planet. In a tour of the seven greatest wonders of Australia and Oceania, we'll encounter the Outback, Australia's enormous interior region. The Outback is full of amazing land formations, animals, and plants. We'll also see Mount Kilauea in Hawaii, one of the world's most active volcanoes, and New Caledonia, a South Pacific island full of plants that have been around since the age of the dinosaurs. We'll also discover the human legends and mysteries that surround these natural monuments. What other natural wonders do Australia and Oceania hold? To find out, we'll explore... |
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Source Naturals ArcticPure EFA Fish Oil 325mg, 120 softgels by Source Naturals Dietary supplement. Arctic Pure uses oil from fish caught in the cleanest and coldest body of water, the Arctic Ocean. A series of advanced distillation processes concentrates and extracts beneficial fatty acids, while guaranteeing the absence of heavy metals and PCB's. Natural flavors give our ArcticPure oils a taste that is pleasing to both children and adults. ArcticPure EFA combines omega-3 (fish oil) and omega-6 (borage oil) fatty acids. These fatty acids (EPA, DHA, and GLA) are important for proper cell signaling and membrane integrity. ArcticPure EFA is enhanced with advanced lipid-stabilizing antioxidants for extended freshness (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any... |
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Gösta Nystroem: Arctic Ocean; Sinfonia Breve; Sinfonia Seria Gosta Nystroem (Composer), Jukka-Pekka Saraste (Composer), Peter Eros (Composer), Sixten Ehrling (Composer), Gothenburg Symphony Orchestra (Composer), Stockholm Philharmonic Orchestra (Composer) |
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Arctic Ocean Paradise Scene Kit by Buy Seasons |
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Teddy Bear with iceberg, ocean, sea, arctic, glacier, winter t-shirt by SHOPZEUS 7 inch tall soft teddy bear with personalized white t-shirt. |
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Arctic Ocean Paradise Scene Kit by BuyCostumes Arctic Ocean Paradise Scene Kit includes: (1) Ocean & Sky Backdrop, (1) Cruise Ship Deck Backdrop, (1) Cruise Ship Buffet Props Add-Ons, (1) Arctic Cruise Props Add-Ons. Add-On Wall Decorations contain an assortment of items that are printed on plastic sheets and may need to be cut out separately. Decorations can be hung with adhesive or pins (not included). How to install the Scene Kit: Choose your space, Install Room Rolls and Wall Border (included), Finish off your scene with Add Ons (included). Please Note: The kit pictured above does not show every included add-on due to space limitations. |
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Onesie with iceberg, ocean, sea, arctic, glacier, winter by Shop Zeus |
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