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.

 

Rare beluga data show whales dive to maximize meals
As the Arctic continues to change due to rising temperatures, melting sea ice and human interest in developing oil and shipping routes, it's important to understand belugas' baseline behavior, argue the authors of a new article.
Publ.Date : Fri, 12 Feb 2016 14:09:15 EST

Catastrophic failure of South American Ice Age dam changed Pacific Ocean circulation and climate
The catastrophic release of fresh water from a vast south American lake at the end of the last Ice Age was significant enough to change circulation in the Pacific Ocean according to new research. The study reveals that the lake, which was about one third the size of Wales, drained several times between 13,000 and 8,000 years ago, with devastating consequences.
Publ.Date : Fri, 12 Feb 2016 10:24:31 EST

Decade of rising seas slowed by land soaking up extra water
New measurements from a NASA satellite have allowed researchers to identify and quantify, for the first time, how climate-driven increases of liquid water storage on land have affected the rate of sea level rise. A new study shows that while ice sheets and glaciers continue to melt, changes in weather and climate over the past decade have caused Earth's continents to soak up and store an extra 3.2 trillion tons of water in soils, lakes and underground aquifers, temporarily slowing the rate of sea level rise by about 20 percent.
Publ.Date : Thu, 11 Feb 2016 19:23:49 EST

Testing detects algal toxins in Alaska marine mammals
Toxins from harmful algae are present in Alaskan marine food webs in high enough concentrations to be detected in marine mammals such as whales, walruses, sea lions, seals, porpoises and sea otters, according to new research.
Publ.Date : Thu, 11 Feb 2016 14:22:29 EST

Plankton carries carbon to safe resting spot, ocean study reveals
The ocean's power to rein in carbon and protect the environment is vast but not well-understood. But now, an international team of scientists has begun to illuminate how the ocean plucks carbon from the atmosphere, where it contributes to global warming, and shuttles it to the bottom of the sea.
Publ.Date : Wed, 10 Feb 2016 13:48:25 EST

Clams help date duration of ancient methane seeps in the Arctic
A bed of fossilized, methane dependent clams has for the first time been observed in the high Arctic. It tells the story of a thousand year long methane release event.
Publ.Date : Wed, 10 Feb 2016 11:13:32 EST

How stable is the West Antarctic Ice Sheet?
A future warming of the Southern Ocean caused by rising greenhouse gas concentrations in the atmosphere may severely disrupt the stability of the West Antarctic Ice Sheet. The result would be a rise in the global sea level by several meters.
Publ.Date : Tue, 09 Feb 2016 11:01:11 EST

How ice-shelf loss leads to faster sea-level rise: The shield is crumbling
Over the past 20 years, many ice shelves in Antarctica have shrunk and some have disappeared entirely. This has resulted in a significant acceleration of many Antarctic glaciers, contributing to rising sea levels. Researchers have used a complex model to show for the first time at what point the 'buttressing' role of ice shelves is impaired due to their decline.
Publ.Date : Tue, 09 Feb 2016 10:54:16 EST

Long-term picture offers little solace on climate change
Climate change projections that look ahead one or two centuries show a rapid rise in temperature and sea level, but say little about the longer picture. A new looks at the next 10,000 years, and finds that the catastrophic impact of another three centuries of carbon pollution will persist millennia after the carbon dioxide releases cease.
Publ.Date : Mon, 08 Feb 2016 11:30:09 EST

Ocean acidification makes coralline algae less robust
Ocean acidification (the ongoing decrease in the pH of Earth's oceans, caused by the uptake of carbon dioxide from the atmosphere), is affecting the formation of the skeleton of coralline algae which play an important part in marine biodiversity, new research has found.
Publ.Date : Mon, 08 Feb 2016 08:31:34 EST

Human-made underwater sound may have wider ecosystem effects than previously thought
Underwater sound linked to human activity could alter the behaviour of seabed creatures that play a vital role in marine ecosystems, according to new research.
Publ.Date : Fri, 05 Feb 2016 10:05:11 EST

Motorboat noise gives predators a deadly advantage
Biologists found that noise from passing motorboats increases stress levels in young coral reef fish and reduces their ability to flee from predators. As a consequence they are captured more easily and their survival chances are halved.
Publ.Date : Fri, 05 Feb 2016 10:04:57 EST

Bachelor's paradise: Female turtles outnumbering males due to warming temps
Rising global temperatures may skew gender imbalance among the marine turtle population, according to new research. The sex of marine hatchlings is influenced by incubating temperatures, and warmer temperatures produce a higher number of female hatchlings.
Publ.Date : Thu, 04 Feb 2016 11:16:34 EST

Safeguarding sturgeon
Researchers are one step closer to developing an online map that would help Mid-Atlantic fishermen avoid catching Atlantic sturgeon. The team found they could make useful predictions about sturgeon locations using satellite measurements of ocean color and temperature.
Publ.Date : Thu, 04 Feb 2016 09:49:23 EST

The seawater temperature distribution in tropics affects the rainfall in East Asia
A wide swatch of Asia, from the tropics to the mid-latitudes, which has wet and dry seasons, is significantly affected by 'Asian monsoons.' The amount of rainfall in particular has a close relationship to agriculture and damage from flooding.
Publ.Date : Thu, 04 Feb 2016 09:49:20 EST

In the Southern Ocean, a carbon-dioxide mystery comes clear
Twenty thousand years ago, low concentrations of carbon dioxide in the atmosphere allowed the earth to fall into the grip of an ice age. But despite decades of research, the reasons why levels of the greenhouse gas were so low then have been difficult to piece together. New research shows that a big part of the answer lies at the bottom of the world.
Publ.Date : Wed, 03 Feb 2016 15:01:27 EST

Warming ocean may bring major changes for US northeast fishery species
Scientists have released the first multispecies assessment of just how vulnerable U.S. marine fish and invertebrate species are to the effects of climate change. The study examined 82 species that occur off the Northeastern U.S., where ocean warming is occurring rapidly. Researchers found that most species evaluated will be affected, and that some are likely to be more resilient to changing ocean conditions than others.
Publ.Date : Wed, 03 Feb 2016 14:57:19 EST

Antarctic study identifies melting ice sheet's role in sea level rise
Loss of ice in Antarctica caused by a warming ocean could raise global sea levels by three meters, research suggests.
Publ.Date : Wed, 03 Feb 2016 11:08:08 EST

Study shows North Atlantic Ocean CO2 storage doubled over last decade
A new study shows that the North Atlantic absorbed 50 percent more human-made carbon dioxide over the last decade, compared to the previous decade. The findings show the impact that the burning of fossil fuels have had on the world's oceans in just 10 years.
Publ.Date : Tue, 02 Feb 2016 18:54:59 EST

Greenland model could help estimate sea level rise
Mathematicians and glaciologists have taken a first step toward understanding how glacier ice flowing off Greenland affects sea levels.
Publ.Date : Tue, 02 Feb 2016 14:39:45 EST