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.

 

Equatorial fish babies in hot water
Rising ocean temperatures slow the development of baby fish around the equator, scientists have found, raising concerns about the impact of global warming on fish and fisheries in the tropics.
Publ.Date : Mon, 30 Mar 2015 09:54:01 EDT

Volcanic eruptions found to durably impact climate through alterations to North Atlantic Ocean circulation
Particles emitted during major volcanic eruptions cool the atmosphere due to a 'parasol' effect that reflects sunlight. The direct impact of these particles in the atmosphere is fairly short, lasting two to three years. However, they alter for more than 20 years the North Atlantic Ocean circulation, which connects surface and deep currents and influences the climate in Europe.
Publ.Date : Mon, 30 Mar 2015 08:27:44 EDT

Spring plankton bloom hitches ride to sea's depths on ocean eddies
Just as crocus and daffodil blossoms signal the start of a warmer season on land, a similar 'greening' event --a massive bloom of microscopic plants, or phytoplankton -- unfolds each spring in the North Atlantic Ocean from Bermuda to the Arctic.
Publ.Date : Fri, 27 Mar 2015 10:11:55 EDT

Pacific-wide study reveals striped marlins' preferred habitat, may help avoid overfishing
Using the largest tagging data set to date, biologists have shown that across the Pacific Ocean the vertical habitat of striped marlin is defined by the light-penetrated, uppermost part of the ocean known as the epipelagic layer, within eight degrees Celsius of sea surface temperature.
Publ.Date : Thu, 26 Mar 2015 15:23:29 EDT

Antarctic ice shelves rapidly thinning
A new study has revealed that the thickness of Antarctica's floating ice shelves has recently decreased by as much as 18 percent in certain areas over nearly two decades, providing new insights on how the Antarctic ice sheet is responding to climate change.
Publ.Date : Thu, 26 Mar 2015 15:14:32 EDT

Twice the coral trout in Great Barrier Reef protected zones
Coral trout in protected 'green zones' are not only bigger and more abundant than those in fished 'blue zones' of the Great Barrier Reef Marine Park, but they are also better able to cope with cyclone damage, according to a long-term study.
Publ.Date : Thu, 26 Mar 2015 13:08:39 EDT

Pioneering techniques in computer vision and robotics pave the way for future underwater surveying in Cardigan Bay
Scientists have been working with marine conservation groups to develop better techniques for studying the seabed which is vital for marine conservation and fisheries management.
Publ.Date : Thu, 26 Mar 2015 08:32:58 EDT

Coastal property values could erode if nourishment subsidies end
The value of many oceanfront properties on the East Coast could drop dramatically if Congress were to suddenly end federal beach nourishment subsidies. Values could fall by as much as 17 percent in towns with high property values and almost 34 percent in towns with low property values. A gradual reduction of the subsidies, in contrast, is more likely to smooth the transition to more climate-resilient coastal communities.
Publ.Date : Wed, 25 Mar 2015 15:23:17 EDT

A mile deep, ocean fish facing health impacts from human pollution
Deep-water marine fish living on the continental slopes at depths from 2,000 feet to one mile have liver pathologies, tumors and other health problems that may be linked to human-caused pollution, one of the first studies of its type has found. Fish have been found with a blend of male and female sex organs including. The findings appear to reflect general ocean conditions.
Publ.Date : Wed, 25 Mar 2015 15:23:15 EDT

Shell-shocked: Ocean acidification likely hampers tiny shell builders in Southern Ocean
A ubiquitous type of phytoplankton -- tiny organisms that are the base of the marine food web -- appears to be suffering from the effects of ocean acidification caused by climate change. According to authors of a new study, the single-celled organism under study is a type of "calcifying" plankton called a coccolithophore, which makes energy from sunlight and builds microscopic calcium carbonate shells, or plates, to produce a chalky suit of armor.
Publ.Date : Wed, 25 Mar 2015 13:51:51 EDT

Doubling of coastal erosion by mid-century in Hawai'i
Chronic erosion dominates the sandy beaches of Hawai'i, causing beach loss as it damages homes, infrastructure, and critical habitat. Researchers have long understood that global sea level rise will affect the rate of coastal erosion. However, new research indicates that coastal erosion of Hawai'i's beaches may double by mid-century.
Publ.Date : Tue, 24 Mar 2015 10:14:55 EDT

Ascension of marine diatoms linked to vast increase in continental weathering
A team of researcher has used mathematical modeling to show that continental erosion over the last 40 million years has contributed to the success of diatoms, a group of tiny marine algae that plays a key role in the global carbon cycle.
Publ.Date : Mon, 23 Mar 2015 16:23:50 EDT

Ocean circulation changing: Ten years of ocean monitoring uncovers secrets of changing UK winters
A groundbreaking project to observe and analyse regular data about ocean circulation and how it impacts Britain's climate has reached a 10-year milestone, giving valuable new insights into how ocean currents can affect global warming.
Publ.Date : Mon, 23 Mar 2015 15:06:21 EDT

Archaea: Surviving in hostile territory
Many strange creatures live in the deep sea, but few are odder than archaea, primitive single-celled bacteria-like microorganisms. Archaea go to great lengths -- eating methane or breathing sulfur or metal instead of oxygen -- to thrive in the most extreme environments on the planet. Now scientists have discovered something odder still: a remarkable new virus that seemingly infects methane-eating archaea living beneath the ocean's floor.
Publ.Date : Mon, 23 Mar 2015 14:28:43 EDT

Gulf Stream system: Atlantic Ocean overturning, responsible for mild climate in northwestern Europe, is slowing
The Atlantic overturning is one of Earth's most important heat transport systems, pumping warm water northwards and cold water southwards. Also known as the Gulf Stream system, it is responsible for the mild climate in northwestern Europe. Scientists now found evidence for a slowdown of the overturning -- multiple lines of observation suggest that in recent decades, the current system has been weaker than ever before in the last century, or even in the last millennium.
Publ.Date : Mon, 23 Mar 2015 13:27:46 EDT

Key to the long-term storage of dissolved organic carbon in the deep ocean
Researchers have made strides in the understanding of the mechanisms governing the persistence of dissolved organic carbon for hundreds or thousands of years in the deep ocean. Most of this material is below 1,000 meters deep, but it is not degraded by bacteria. The finding provides new keys to further deepen the understanding of the regulation of the carbon cycle and the global climate.
Publ.Date : Mon, 23 Mar 2015 11:00:02 EDT

International study raises questions about cause of global ice ages
A new international study casts doubt on the leading theory of what causes ice ages around the world -- changes in the way the Earth orbits the sun. The researchers found that glacier movement in the Southern Hemisphere is influenced primarily by sea surface temperature and atmospheric carbon dioxide rather than changes in the Earth's orbit, which are thought to drive the advance and retreat of ice sheets in the Northern Hemisphere.
Publ.Date : Fri, 20 Mar 2015 10:17:47 EDT

Massive amounts of fresh water, glacial melt pouring into Gulf of Alaska
Incessant mountain rain, snow and melting glaciers in a comparatively small region of land that hugs the southern Alaska coast and empties fresh water into the Gulf of Alaska would create the sixth largest coastal river in the world if it emerged as a single stream, a recent study shows. Freshwater runoff of this magnitude may play important ecological roles.
Publ.Date : Thu, 19 Mar 2015 16:55:54 EDT

Geoengineering proposal may backfire: Ocean pipes 'not cool,' would end up warming climate
There are a variety of proposals that involve using vertical ocean pipes to move seawater to the surface from the depths in order to reap different potential climate benefits. One idea involves using ocean pipes to facilitate direct physical cooling of the surface ocean by replacing warm surface ocean waters with colder, deeper waters. New research shows that these pipes could actually increase global warming quite drastically.
Publ.Date : Thu, 19 Mar 2015 14:33:37 EDT

Tropical cyclone size controlled by relative sea-surface temperatures
The size of tropical cyclones is controlled by their underlying sea-surface temperatures (SST) relative to the conditions of the mean SST within the surrounding tropical zone of the storms, researchers have found. These findings imply that under a warmer climate, the size of tropical cyclones (including hurricanes), are not based on the absolute value of SST alone.
Publ.Date : Tue, 17 Mar 2015 16:21:46 EDT