Oceanography News

Courtesy of Science Daily

Welcome to Sea and Sky's Oceanography News. Here you can find links to the latest ocean news headlines in the topic of oceanography. Click on any yellow title below to view the full news article. The news article will open in a new browser window. Simply close the browser window when you are finished reading the article to return to the news article listing. You can use the "Click for More" link to go to a page with more news headlines.

 

The Greenland Ice Sheet: Now in HD
The highest-resolution maps of the Greenland Ice Sheet are debuting. Starting with Worldview satellite imagery, The maps are already revealing previously unknown features on the ice sheet.
Publ.Date : Thu, 18 Dec 2014 09:09:23 EST

Satellites measure increase of Sun's energy absorbed in the Arctic
NASA satellite instruments have observed a marked increase in solar radiation absorbed in the Arctic since the year 2000 -- a trend that aligns with the steady decrease in Arctic sea ice during the same period.
Publ.Date : Wed, 17 Dec 2014 15:41:24 EST

Australia's coastal observation network may aid in understanding of extreme ocean events
A network of nine reference sites off the Australian coast is providing the latest physical, chemical, and biological information to help scientists better understand Australia's coastal seas.
Publ.Date : Wed, 17 Dec 2014 15:40:16 EST

Ancient, hydrogen-rich waters deep underground around the world: Waters could support isolated life
A team of scientists has mapped the location of hydrogen-rich waters found trapped kilometers beneath Earth's surface in rock fractures in Canada, South Africa and Scandinavia. Common in Precambrian Shield rocks -- the oldest rocks on Earth -- the ancient waters have a chemistry similar to that found near deep sea vents, suggesting these waters can support microbes living in isolation from the surface.
Publ.Date : Wed, 17 Dec 2014 14:11:27 EST

North Atlantic signaled Ice Age thaw 1,000 years before it happened, reveals new research
The Atlantic Ocean at mid-depths may have given out early warning signals – 1,000 years in advance - that the last Ice Age was going to end, scientists report.
Publ.Date : Wed, 17 Dec 2014 07:44:40 EST

Abundance of microplastics in the world's deep seas
Around four billion minute fibers could be littering each square kilometer of some of the world's deep seas, according to a new study.
Publ.Date : Tue, 16 Dec 2014 21:22:53 EST

Biologist reveals how whales may 'sing' for their supper
Humpback whales have a trick or two, when it comes to finding a quick snack at the bottom of the ocean. Even in the dark. Biologists have been studying these unique feeding behaviors. Her research emphasizes the importance of specific auditory cues that these mammoth creatures emit, as they search the deep ocean for their prey.
Publ.Date : Tue, 16 Dec 2014 17:57:52 EST

Ocean acidification a culprit in commercial shellfish hatcheries' failures
The mortality of larval Pacific oysters in Northwest hatcheries has been linked to ocean acidification. Yet the rate of increase in carbon dioxide in the atmosphere and the decrease of pH in near-shore waters have been questioned as being severe enough to cause the die-offs, researchers report.
Publ.Date : Tue, 16 Dec 2014 11:30:27 EST

Massive study provides first detailed look at how Greenland's ice is vanishing
Scientists used NASA satellite and aerial data to reconstruct how the ice sheet changed at nearly 100,000 locations over many years.
Publ.Date : Mon, 15 Dec 2014 15:45:22 EST

Migrating 'supraglacial' lakes could trigger future Greenland ice loss
Predictions of Greenland ice loss and its impact on rising sea levels may have been greatly underestimated. Supraglacial lakes are darker than ice, so they absorb more of the Sun's heat, which leads to increased melting. When the lakes reach a critical size, they drain through ice fractures, allowing water to reach the ice sheet base which causes it to slide more quickly into the oceans. These changes can also trigger further melting.
Publ.Date : Mon, 15 Dec 2014 11:40:59 EST

Study of threatened coral reefs underway
A new study in Florida has successfully mapped 40 acres of staghorn coral, including some previously undiscovered reef patches. The report states staghorn corals covered nearly 100 percent of the seafloor in some areas. This is particularly astounding, as reef building, or stony, coral usually only account for 3-5 percent of the community on southeast Florida reefs.
Publ.Date : Fri, 12 Dec 2014 19:01:01 EST

Oil-dwelling bacteria are social creatures in Earth's deep biosphere
Oil reservoirs are scattered deep inside the Earth like far-flung islands in the ocean, so their inhabitants might be expected to be very different, but a new study shows these underground microbes are social creatures that have exchanged genes for eons.
Publ.Date : Fri, 12 Dec 2014 15:03:15 EST

Major comeback for sea turtles: Highest reported nest counts in Nicaragua
Scientists noticed a dramatic increase in nesting of critically endangered hawksbill sea turtles including the highest nest counts since a conservation project began there in 2000.
Publ.Date : Thu, 11 Dec 2014 11:53:18 EST

Story of bizarre deep-sea bone worm takes unexpected twist: Evolutionary reversal previously unseen in animal kingdom
The saga of the Osedax “bone-eating” worms began 12 years ago, with the first discovery of these deep-sea creatures that feast on the bones of dead animals. The Osedax story grew even stranger when researchers found that the large female worms contained harems of tiny dwarf males.
Publ.Date : Thu, 11 Dec 2014 10:18:39 EST

Tourism poses a threat to dolphins in the Balearic Islands
The rise in tourism, fishing and sea transport between the Iberian Peninsula and the Balearic Islands is compromising the wellbeing of a small population of common bottlenose dolphins living in coastal waters off the Pityusic Islands. This is the conclusion of a study which has, for the first time, counted these mammals in summer and spring, which are crucial seasons for them.
Publ.Date : Thu, 11 Dec 2014 08:11:14 EST

Scientists estimate total weight of plastic floating in world's oceans: Nearly 269,000 tons of plastic pollution floating in the ocean
Nearly 269,000 tons of plastic pollution may be floating in the world's oceans, according to a new study. Microplastic pollution is found in varying concentrations throughout the oceans, but estimates of the global abundance and weight of floating plastics, both micro and macroplastic, lack sufficient data to support them. To better estimate the total number of plastic particles and their weight floating in the world's oceans, scientists from six countries contributed data from 24 expeditions collected over a six-year period from 2007-2013 across all five sub-tropical gyres, coastal Australia, Bay of Bengal, and the Mediterranean Sea.
Publ.Date : Wed, 10 Dec 2014 14:08:27 EST

No laughing matter: Nitrous oxide rose at end of last ice age
Nitrous oxide is an important greenhouse gas that doesn't receive as much notoriety as carbon dioxide or methane, but a new study confirms that atmospheric levels of N2O rose significantly as the Earth came out of the last ice age and addresses the cause.
Publ.Date : Wed, 10 Dec 2014 13:13:01 EST

Climate change projected to drive species northward
Anticipated changes in climate will push West Coast marine species from sharks to salmon northward an average of 30 kilometers per decade, shaking up fish communities and shifting fishing grounds, according to a new study.
Publ.Date : Wed, 10 Dec 2014 12:14:01 EST

Ancient creature discovered in the depths of the Arctic Ocean
An extraordinary animal has been discovered more than 1.5 miles (2.5 km) below the ocean surface off the coast of northern Alaska, USA. The new species is a type of bivalve mollusk (clams, mussels, oysters etc.). Age estimates place the new clam as living more than 1.8 million years ago to the near present, but scientists can't discount that it might still be alive today.
Publ.Date : Wed, 10 Dec 2014 11:43:12 EST

Warmer Pacific Ocean could release millions of tons of seafloor methane
Water off Washington's coast is warming a third of a mile down, where seafloor methane shifts from a frozen solid to a gas. Calculations suggest ocean warming is already releasing significant methane offshore of Alaska to Northern California.
Publ.Date : Tue, 09 Dec 2014 10:12:57 EST