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.

 

Study reveals new Antarctic process contributing to sea level rise and climate change
A new study has revealed a previously undocumented process where melting glacial ice sheets change the ocean in a way that further accelerates the rate of ice melt and sea level rise. The research found that glacial meltwater makes the ocean's surface layer less salty and more buoyant, preventing deep mixing in winter and allowing warm water at depth to retain its heat and further melt glaciers from below.
Publ.Date : Wed, 18 Apr 2018 14:15:20 EDT

The 'radical' ways sunlight builds bigger molecules in the atmosphere
With summer approaching, 'sea and sun' might conjure up images of a beach trip. But for scientists, the interactions of the two have big implications for the climate and for the formation of tiny droplets, or aerosols, that lead to clouds. Researchers demonstrate that sunlight can cause certain molecules at the ocean's surface to activate others, resulting in larger molecules that could affect the atmosphere.
Publ.Date : Wed, 18 Apr 2018 09:19:30 EDT

More than 12,000 marine creatures uncovered during West Java deep-sea exploration
Scientists who participated in the South Java Deep Sea Biodiversity Expedition 2018 had collected more than 12,000 creatures during their 14-day voyage to survey the unexplored deep seas off the southern coast of West Java, Indonesia.
Publ.Date : Tue, 17 Apr 2018 11:56:59 EDT

Giant group of octopus moms discovered in the deep sea
At the bottom of the ocean, scientists discovered hundreds of small pink octopuses and their eggs. The colonies were in warmer water than is healthy for octopuses, which means that they probably won't survive. That makes the scientists think there are probably even bigger colonies thriving in the cool rock crevices nearby.
Publ.Date : Tue, 17 Apr 2018 09:40:38 EDT

Virtual contact lenses for radar satellites
Radar satellites supply the data used to map sea level and ocean currents. However, up until now the radar's 'eyes' have been blind where the oceans are covered by ice. Researchers have now developed a new analysis method to solve this problem.
Publ.Date : Mon, 16 Apr 2018 10:58:11 EDT

One-fifth of carbon entering coastal waters of eastern North America is buried
Coastal waters play an important role in the carbon cycle by transferring carbon to the open ocean or burying it in wetland soils and ocean sediments, a new study shows.
Publ.Date : Thu, 12 Apr 2018 10:29:42 EDT

Atlantic Ocean Circulation at weakest point in 1,600 years
New research provides evidence that a key cog in the global ocean circulation system hasn't been running at peak strength since the mid-1800s and is currently at its weakest point in the past 1,600 years. If the system continues to weaken, it could disrupt weather patterns from the United States and Europe to the African Sahel, and cause more rapid increase in sea level on the US East Coast.
Publ.Date : Wed, 11 Apr 2018 13:16:42 EDT

Snowfall patterns may provide clues to Greenland Ice Sheet
A new study describes a unique method involving cloud characteristics for measuring snowfall that could help answer some big questions about the Greenland Ice Sheet.
Publ.Date : Wed, 11 Apr 2018 13:16:31 EDT

Formation of supercontinents and strength of ocean tides
The cyclic strengthening and weakening of ocean tides over tens of millions of years is likely linked to another, longer cycle: the formation of Earth's supercontinents every 400 to 600 million years, according a new study.
Publ.Date : Wed, 11 Apr 2018 13:16:14 EDT

Extensive seagrass meadows discovered in Indian Ocean through satellite tracking of green turtles
Biologists have discovered for the first time extensive deep-water seagrass meadows in the middle of the vast Indian Ocean through satellite tracking the movement of green sea turtles.
Publ.Date : Wed, 11 Apr 2018 11:10:27 EDT

Baby fish led astray by high CO2 in oceans
Baby fish will find it harder to reach secure shelters in future acidified oceans -- putting fish populations at risk, new research has concluded.
Publ.Date : Wed, 11 Apr 2018 09:04:18 EDT

Hotter, longer, more frequent -- marine heatwaves on the rise
We know heatwaves over land have been increasing, but now new research reveals globally marine heatwaves have also been increasing in length, number and intensity over the past century. More intriguing still, this trend has accelerated markedly since 1982.
Publ.Date : Tue, 10 Apr 2018 16:41:34 EDT

Center of world's marine biodiversity is in danger
Researchers have found that the world's center of biodiversity is under widespread threat of losing a key marine resource.
Publ.Date : Tue, 10 Apr 2018 13:28:48 EDT

Melting of Arctic mountain glaciers unprecedented in the past 400 years
Glaciers in Alaska's Denali National Park are melting faster than at any time in the past four centuries because of rising summer temperatures, a new study finds.
Publ.Date : Tue, 10 Apr 2018 13:28:37 EDT

Silent marine robots record sounds underwater
Silent marine robots that record sounds underwater are allowing researchers to listen to the oceans as never before. While pilot whales make whistles, buzzes and clicks, pods of hunting dolphins create high-pitched echolocation clicks and larger species such as sperm whales make louder, slower clicks. As well as eavesdropping on marine life, the recordings can be used to measure sea-surface wind speed and monitor storms. The research will be presented at the General Assembly of the European Geosciences Union, Vienna.
Publ.Date : Tue, 10 Apr 2018 08:42:30 EDT

To shore up beaches, just add sand?
Sand nourishment projects aim to preserve California's iconic sandy beaches -- but little is known about the long-term effectiveness -- and unintended impacts -- of these sometimes multi-million dollar interventions.
Publ.Date : Mon, 09 Apr 2018 09:01:48 EDT

Oxygen-deprived black sea provides insights on future carbon budget
Scientists are studying the oxygen-deprived waters of the Black Sea to help answer questions about the deepest parts of the ocean and Earth's climate.
Publ.Date : Thu, 05 Apr 2018 09:33:02 EDT

New underwater geolocation technique takes cues from nature
Marine animals such as mantis shrimp and squid have inspired a new mode of underwater navigation that allows for greater accuracy. Researchers have now developed the technique using imaging equipment that was sensitive to polarizing light.
Publ.Date : Thu, 05 Apr 2018 09:32:52 EDT

Human-engineered changes on Mississippi River increased extreme floods
A new study has revealed for the first time the last 500-year flood history of the Mississippi River. It shows a dramatic rise in the size and frequency of extreme floods in the past century -- mostly due to projects to straighten, channelize, and bound the river with artificial levees.
Publ.Date : Wed, 04 Apr 2018 13:35:43 EDT

Algae, impurities darken Greenland ice sheet and intensify melting
The Dark Zone of the Greenland ice sheet has major impact on the surface melt of this immense store of ice. A new study -- based on drone surveys -- suggests that ice algae, dust and soot from wildfires and combustion are the main cause.
Publ.Date : Wed, 04 Apr 2018 11:47:35 EDT