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.

 

Water cooling for the Earth's crust
How deep can seawater penetrate through cracks and fissures into the seafloor? By applying a new analysis method, an international team of researchers has now discovered that the water can penetrate to depths of more than 10 kilometers below the seafloor. This result suggests a stronger cooling effect on the hot mantle.
Publ.Date : Tue, 21 Nov 2017 12:14:41 EST

Antarctic landscape insights keep ice loss forecasts on the radar
New maps of a mountainous landscape under a key glacier in West Antarctica will be a valuable aid in forecasting sea level changes.
Publ.Date : Mon, 20 Nov 2017 12:09:52 EST

Added Arctic data shows global warming didn't pause
Missing Arctic temperature data, not Mother Nature, created the seeming slowdown of global warming from 1998 to 2012, according to a new study.
Publ.Date : Mon, 20 Nov 2017 11:13:43 EST

Hydrological implications of rapid global warming
Researchers studying a rapid global warming event, around 56 million years ago, have shown evidence of major changes in the intensity of rainfall and flood events. The findings indicate some of the likely implications should current trends of rising carbon dioxide and global warming continue.
Publ.Date : Mon, 20 Nov 2017 11:13:36 EST

Recovery of West Coast marine mammals boosts consumption of chinook salmon
The researchers estimate that from 1975 to 2015, the yearly biomass of chinook salmon consumed by pinnipeds (sea lions and harbor seals) and killer whales increased from 6,100 to 15,200 metric tons, and from five to 31.5 million individual salmon.
Publ.Date : Mon, 20 Nov 2017 08:54:19 EST

Warmer water signals change for Scotland's shags
An increasingly diverse diet among European shags at one of Scotland's best-studied breeding colonies has been linked to long-term climate change and may have important implications for Scotland's seabirds.
Publ.Date : Fri, 17 Nov 2017 10:38:02 EST

One in ten historic coastal landfill sites in England are at risk of erosion
There are at least 1,215 historic coastal landfill sites in England, mostly clustered around estuaries with major cities, including Liverpool, London, and Newcastle on Tyne. An investigation by researchers finds that 122 sites are at risk of starting to erode into coastal waters by 2055 if not adequately protected.
Publ.Date : Wed, 15 Nov 2017 19:52:57 EST

Study urges global-change researchers to embrace variability
A new review article presents evidence that argues for a more nuanced approach to the design of global-change experiments -- one that acknowledges and purposefully incorporates the variability inherent in nature.
Publ.Date : Wed, 15 Nov 2017 15:36:27 EST

Pacific Island countries could lose 50 -- 80% of fish in local waters under climate change
Many Pacific Island nations will lose 50 to 80 percent of marine species in their waters by the end of the 21st century if climate change continues unchecked, finds a new study. This area of the ocean is projected to be the most severely impacted by aspects of climate change.
Publ.Date : Wed, 15 Nov 2017 13:38:53 EST

How a tiny sea animal feeds itself, and the ocean
Dime-sized ocean organisms thought to graze on any particles in their path are actually picky eaters, and their food-filtering process may be vital to how organic materials are distributed from surface waters to the ocean floor, report investigators.
Publ.Date : Wed, 15 Nov 2017 13:02:17 EST

Colorado River's connection with the ocean was a punctuated affair
The Colorado River's initial trip to the ocean didn't come easy, but its story has emerged from layers of sediment preserved within tectonically active stretches of the waterway's lower reaches. Researchers theorize that the river's route off the Colorado Plateau was influenced by tectonic deformation and changing sea levels that produced a series of stops and starts between roughly 6.3 and 4.8 million years ago.
Publ.Date : Wed, 15 Nov 2017 12:46:16 EST

How a 'shadow zone' traps the world's oldest ocean water
New research has revealed why the oldest water in the ocean in the North Pacific has remained trapped in a shadow zone around 2km below the sea surface for over 1000 years.
Publ.Date : Fri, 10 Nov 2017 11:39:53 EST

Ice sheets as large as Greenland's melted fast in a warming climate
New research shows that climate warming reduced the mass of the Cordilleran Ice Sheet by half in as little as 500 years, indicating the Greenland Ice Sheet could have a similar fate.
Publ.Date : Thu, 09 Nov 2017 22:40:24 EST

Hot news from the Antarctic underground
A new study adds evidence that a geothermal heat source called a mantle plume lies deep below Antarctica's Marie Byrd Land, explaining some of the melting that creates lakes and rivers under the ice sheet.
Publ.Date : Tue, 07 Nov 2017 13:17:45 EST

Federal climate science report for U.S. released
The newly released Climate Science Special Report describes current trends in the climate globally and for the U.S., and projects trends in temperature, precipitation, sea-level rise and Arctic sea ice for the remainder of this century.
Publ.Date : Mon, 06 Nov 2017 14:37:41 EST

Fifty-years of data from a 'living' oxygen minimum lab could help predict the oceans' future
Researchers have released 50 years' worth of data chronicling the deoxygenating cycles of a fjord off Canada's west coast, and detailing the response of the microbial communities inhabiting the fjord. The mass of data, collected in two related articles, could help scientists better predict the impact of human activities and ocean deoxygenation on marine environments.
Publ.Date : Thu, 02 Nov 2017 11:00:27 EDT

Versatile marine bacteria could be an influence on global warming, scientists discover
Scientists have discovered that a 'rare' type of marine bacteria is much more widespread than previously thought -- and possesses a remarkable metabolism that could contribute to greenhouse gas production.
Publ.Date : Wed, 01 Nov 2017 15:12:43 EDT

New Greenland maps show more glaciers at risk
New maps of Greenland's coastal seafloor and bedrock beneath its massive ice sheet show that two to four times as many coastal glaciers are at risk of accelerated melting as had previously been thought.
Publ.Date : Wed, 01 Nov 2017 15:12:27 EDT

Intensifying winds could increase east Antarctica's contribution to sea level rise
Totten Glacier, the largest glacier in East Antarctica, is being melted from below by warm water that reaches the ice when winds over the ocean are strong, according to research. The new findings are a cause for concern because the glacier holds more than 11 feet of sea level rise and acts as a plug that helps lock in the ice of the East Antarctic Ice Sheet.
Publ.Date : Wed, 01 Nov 2017 14:16:43 EDT

A nutrient mix makes phytoplankton thrive
Unicellular photosynthetic microbes -- phytoplankton -- play a fundamental role in the global carbon cycle and fuel marine food webs. Globally, phytoplankton productivity is regulated by the availability of essential nutrients, such as nitrogen and iron. Researchers have now been able to show that the growth of phytoplankton over large extents of the ocean are not limited by a single nutrient, but by multiple nutrients simultaneously.
Publ.Date : Wed, 01 Nov 2017 14:16:38 EDT