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.

 

Tall ice-cliffs may trigger big calving events -- and fast sea-level rise
Glaciers that drain ice sheets such as Antarctica or Greenland often flow into the ocean, ending in near-vertical cliffs. As the glacier flows into the sea, chunks of the ice break off in calving events. Although much calving occurs when the ocean melts the front of the ice, and ice cliff above falls down, a new study presents another method of calving: slumping. And this process could break off much larger chunks of ice at a quicker rate.
Publ.Date : Fri, 22 Mar 2019 16:33:42 EDT

Arctic deep sea: Colonization in slow motion
There is a wide variety of animals living on the Arctic seabed. Attached to rocks, they feed by removing nutrients from the water using filters or tentacles. But it can take decades for these colonies to become established, and they probably don't achieve their natural diversity until much later.
Publ.Date : Fri, 22 Mar 2019 10:57:20 EDT

Hundreds of bubble streams link biology, seismology off Washington's coast
The first survey of methane vent sites off Washington's coast finds 1,778 bubble columns, with most located along a north-south band that is in line with a geologic fault.
Publ.Date : Thu, 21 Mar 2019 13:09:54 EDT

Research investigates impact of climate change on glacier-fed rivers in Peru
Remote communities in the Peruvian Andes, as well as communities downstream, depend on the water from melting glaciers and mountain ecosystems to provide them with food and power, and to support industry.
Publ.Date : Thu, 21 Mar 2019 10:28:21 EDT

The inbis channel: The most complete submarine cartography
A scientific study describes for the first time the submarine cartography of a high-latitude system in the IBIS channel, which covers tens of kilometers in the northern western area of the Barents Sea, in the Arctic Ocean. This channel is one of the few submarine valleys in polar latitudes that kept its geological architecture during the Last Glacial Maximum (LGM).
Publ.Date : Wed, 20 Mar 2019 14:11:08 EDT

Evidence rogue waves are getting more extreme
Research suggests that 'rogue' waves are occurring less often, but becoming more extreme. Scientists have, for the first time, used long-term data from a wide expanse of ocean to investigate how these rare, unexpected and hazardous ocean phenomena behave.
Publ.Date : Wed, 20 Mar 2019 10:20:05 EDT

Discovery of parasitic arsenic cycle may offer glimpse of life in future, warmer oceans
A newly discovered parasitic cycle, in which ocean bacteria keep phytoplankton on an energy-sapping treadmill of nutrient detoxification, may offer a preview of what further ocean warming will bring.
Publ.Date : Tue, 19 Mar 2019 10:07:30 EDT

Ocean sink for human-made carbon dioxide measured
Scientists have determined the amount of human-made carbon dioxide emissions taken up by the ocean between 1994 and 2007.
Publ.Date : Thu, 14 Mar 2019 15:16:48 EDT

Researchers uncover new clues to surviving extinction
'Great Dying' extinction survivors appear to have shared many of the same ecological roles as their predecessors, with one catch -- there was a surge in the number of individuals with more modern traits. These hardy stand-outs did a better job of driving recovery, making ongoing ecological interactions more intense. Insights into this ancient marine system and its occupants can help guide modern conservation in identifying Earth's most resilient species in the face of environmental stress.
Publ.Date : Thu, 14 Mar 2019 15:16:19 EDT

Role of sea urchins on California kelp
California sheephead and spiny lobsters may be helping control sea urchin populations in Southern California kelp forests, where sea otters -- a top urchin predator -- have long been missing, according to a new study. The research provides new insight into the complex predator-prey relationships in kelp forests that can be seen in the absence of sea otters.
Publ.Date : Thu, 14 Mar 2019 07:58:09 EDT

Tunas, sharks and ships at sea
Researchers combine maps of marine predator habitats with satellite tracks of fishing fleets to identify regions where they overlap -- a step toward more effective wildlife management on the high seas.
Publ.Date : Wed, 13 Mar 2019 14:33:15 EDT

Review of noise impacts on marine mammals yields new policy recommendations
Marine mammals are particularly sensitive to noise pollution because they rely on sound for so many essential functions, including communication, navigation, finding food, and avoiding predators. An expert panel has now published a comprehensive assessment of the available science on how noise exposure affects hearing in marine mammals, providing scientific recommendations for noise exposure criteria that could have far-reaching regulatory implications.
Publ.Date : Wed, 13 Mar 2019 14:33:07 EDT

How marine snow cools the planet
Researchers have mapped out how carbonate formations formed from 'marine snow' have helped regulate Earth's temperature over 120 million years. Researchers also warn that global warming could result in the release of some of that carbon into the atmosphere.
Publ.Date : Wed, 13 Mar 2019 10:32:38 EDT

Trust more important than ecology to gain local support for conservation
Trust, transparency, communication, and fairness in the planning and management of conservation projects may be more important for gaining long-term local support than emphasizing ecological effectiveness, research has discovered.
Publ.Date : Wed, 13 Mar 2019 10:31:59 EDT

Unprecedented number of warm-water species moved northward during marine heatwave
A new study documents an unprecedented number of southern marine species moving northward into California and as far north as Oregon during the 2014-2016 marine heatwave. Of 67 rare, warm-water species sightings observed, 37 had never been documented so far north before.
Publ.Date : Tue, 12 Mar 2019 07:59:04 EDT

Fatal horizon, driven by acidification, closes in on marine organisms in Southern Ocean
Marine microorganisms in the Southern Ocean may find themselves in a deadly vise grip by century's end as ocean acidification creates a shallower horizon for life.
Publ.Date : Mon, 11 Mar 2019 13:31:20 EDT

New nitrogen source in Arctic
Scientists have revealed that the partnership between an alga and bacteria is making the essential element nitrogen newly available in the Arctic Ocean. The microbial process of 'nitrogen fixation' converts the element into a form that organisms can use, and was discovered recently in the frigid polar waters. This shift may be a result of climate change and could affect global chemical cycles.
Publ.Date : Mon, 11 Mar 2019 09:09:55 EDT

It's raining on the Greenland ice -- in the winter
Rainy weather is becoming increasingly common over parts of the Greenland ice sheet, triggering sudden melting events that are eating at the ice and priming the surface for more widespread future melting, says a new study. Some parts of the ice sheet are even receiving rain in winter -- a phenomenon that will spread as climate continues to warm, say the researchers.
Publ.Date : Thu, 07 Mar 2019 09:14:57 EST

As sea level rises, wetlands crank up their carbon storage
Some wetlands perform better under pressure. A new study revealed that when faced with sea-level rise, coastal wetlands respond by burying even more carbon in their soils.
Publ.Date : Wed, 06 Mar 2019 13:14:01 EST

Red tide rolling: Harmful algae found to flourish in both high-, low-CO2 environments
Researchers find a Florida-specific strain of red-tide-causing-algae thrives in both high and low CO2 concentrations.
Publ.Date : Mon, 04 Mar 2019 13:42:05 EST