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.

 

Undersea earthquakes shake up climate science
Sound generated by seismic events on the seabed can be used to determine the temperature of Earth's warming oceans.
Publ.Date : Fri, 18 Sep 2020 18:50:50 EDT

Emissions could add 15 inches to 2100 sea level rise
An international effort that brought together more than 60 ice, ocean and atmosphere scientists from three dozen international institutions has generated new estimates of how much of an impact Earth's melting ice sheets.
Publ.Date : Thu, 17 Sep 2020 12:28:44 EDT

How much will polar ice sheets add to sea level rise?
Over 99% of terrestrial ice is bound up in the ice sheets covering Antarctic and Greenland. Even partial melting of this ice due to climate change will significantly contribute to sea level rise. But how much exactly? For the first time ever, glaciologists, oceanographers, and climatologists from 13 countries have teamed up to make new projections.
Publ.Date : Thu, 17 Sep 2020 12:28:38 EDT

Understanding the movement patterns of free-swimming marine snails
New research looks at the swimming and sinking kinematics of nine species of warm water pteropods (sea snails) to shed light on their ecology, predator-prey interactions, and vertical distributions. By using a high-speed stereophotogrammetry system, investigators were able to focus on how the shell shape, body geometry, and body size affect their swimming behavior from a fluid mechanics perspective, while image analysis and metabarcoding related swimming behaviors to night time and daytime vertical distributions.
Publ.Date : Thu, 17 Sep 2020 12:28:32 EDT

Sea ice triggered the Little Ice Age
A new study finds a trigger for the Little Ice Age that cooled Europe from the 1300s through mid-1800s, and supports surprising model results suggesting that under the right conditions sudden climate changes can occur spontaneously, without external forcing.
Publ.Date : Thu, 17 Sep 2020 10:53:54 EDT

New estimates for the rise in sea levels due to ice sheet mass loss under climate change
An international consortium of researchers under the aegis of CMIP6 has calculated new estimates for the melting of Earth's ice sheets due to greenhouse gas emissions and its impact on sea levels, showing that the ice sheets could together contribute more than 40 cm by the end of 2100.
Publ.Date : Thu, 17 Sep 2020 10:53:39 EDT

Ocean acidification puts deep-sea coral reefs at risk of collapse
Deep-sea coral reefs face challenges as changes to ocean chemistry triggered by climate change may cause their foundations to become brittle, a study suggests.
Publ.Date : Thu, 17 Sep 2020 10:53:21 EDT

Marine animals live where ocean is most breathable, ranges may shrink with climate change
New research shows that a wide variety of marine animals -- from vertebrates to crustaceans to mollusks -- already inhabit the maximum range of breathable ocean that their physiology will allow. The findings provide a warning about climate change: Since warmer waters will harbor less oxygen, some stretches of ocean that are breathable today for a given species may not be in the future.
Publ.Date : Wed, 16 Sep 2020 11:35:36 EDT

Can pumping up cold water from deep within the ocean halt coral bleaching?
Rising ocean temperatures cause marine heat waves, which place stress on living coral animals, as well as the photosynthetic algae on which they depend for energy. A new study is showing potential for the use of artificial upwelling (AU)-- or the application of cooler, deep water -- as a way to mitigate the thermal stress on corals.
Publ.Date : Wed, 16 Sep 2020 11:34:11 EDT

Ocean algae get 'coup de grace' from viruses
Scientists have long believed that ocean viruses always quickly kill algae, but new research shows they live in harmony with algae and viruses provide a 'coup de grace' only when blooms of algae are already stressed and dying. The study will likely change how scientists view viral infections of algae, also known as phytoplankton - especially the impact of viruses on ecosystem processes like algal bloom formation (and decline) and the cycling of carbon and other chemicals on Earth.
Publ.Date : Tue, 15 Sep 2020 09:01:10 EDT

Ancient volcanoes once boosted ocean carbon, but humans are now far outpacing them
A new study of an ancient period that is considered the closest natural analog to the era of modern human carbon emissions has found that massive volcanism sent great waves of carbon into the oceans over thousands of years -- but that nature did not come close to matching what humans are doing today.
Publ.Date : Mon, 14 Sep 2020 17:29:31 EDT

Antarctica: Cracks in the ice
West Antarctica's Pine Island Glacier and Thwaites Glacier have been undergoing rapid changes, with potentially major consequences for rising sea levels. However, the processes that underlie these changes and their impact on these ice sheets have not been fully charted. One of these processes has now been described in detail: the emergence and development of damage/cracks in part of the glaciers and how this process reinforces itself.
Publ.Date : Mon, 14 Sep 2020 15:11:56 EDT

Arctic transitioning to a new climate state
The fast-warming Arctic has started to transition from a predominantly frozen state into an entirely different climate with significantly less sea ice, warmer temperatures, and more rain, according to a comprehensive new study of Arctic conditions.
Publ.Date : Mon, 14 Sep 2020 11:22:32 EDT

Loss of sea otters accelerating the effects of climate change
The impacts of predator loss and climate change are combining to devastate living reefs that have defined Alaskan kelp forests for centuries, according to new research.
Publ.Date : Thu, 10 Sep 2020 15:03:18 EDT

High-fidelity record of Earth's climate history puts current changes in context
Scientists have compiled a continuous, high-fidelity record of variations in Earth's climate extending 66 million years into the past. The record reveals four distinctive climate states, which the researchers dubbed Hothouse, Warmhouse, Coolhouse, and Icehouse. These major climate states persisted for millions and sometimes tens of millions of years, and within each one the climate shows rhythmic variations corresponding to changes in Earth's orbit around the sun.
Publ.Date : Thu, 10 Sep 2020 15:03:13 EDT

$500 billion question: What's the value of studying the ocean's biological carbon pump?
A new study puts an economic value on the benefit of research to improve knowledge of the biological carbon pump and reduce the uncertainty of ocean carbon sequestration estimates.
Publ.Date : Thu, 10 Sep 2020 13:04:14 EDT

New corals discovered in deep-sea study of Great Barrier Reef Marine Park
For the first time, scientists have viewed the deepest regions of the Great Barrier Reef Marine Park, discovered five undescribed species consisting of black corals and sponges, and recorded Australia's first observation of an extremely rare fish.
Publ.Date : Wed, 09 Sep 2020 09:28:24 EDT

Deep channels link ocean to Antarctic glacier
Newly discovered deep seabed channels beneath Thwaites Glacier in West Antarctica may be the pathway for warm ocean water to melt the underside of the ice. Data from two research missions, using aircraft and ship, are helping scientists to understand the contribution this huge and remote glacier is likely to make to future global sea level rise.
Publ.Date : Tue, 08 Sep 2020 20:05:35 EDT

Developing models to predict storm surges
Storm surges sometimes can increase coastal sea levels 10 feet or more, jeopardizing communities and businesses along the water, but new research shows there may be a way to predict periods when it's more likely that such events occur. Researchers have developed models to predict extreme changes in sea level by linking storm surges to large-scale climate variability.
Publ.Date : Tue, 08 Sep 2020 13:10:26 EDT

'Wrong-way' migrations stop shellfish from escaping ocean warming
Ocean warming is paradoxically driving bottom-dwelling invertebrates -- including sea scallops, blue mussels, surfclams and quahogs that are valuable to the shellfish industry -- into warmer waters and threatening their survival, a new study shows.
Publ.Date : Mon, 07 Sep 2020 11:23:20 EDT