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Latest Oceanography Stories

Past Climate Change Linked With Ancient Alteration of Seawater Chemistry
2012-07-20 15:41:27

Dissolution or creation of huge gypsum deposits changed sulfate content of the oceans Scientists have discovered a potential cause of Earth's "icehouse climate" cooling trend of the past 45 million years. It has everything to do with the chemistry of the world's oceans. "Seawater chemistry is characterized by long phases of stability, which are interrupted by short intervals of rapid change," says geoscientist Ulrich Wortmann of the University of Toronto, lead author of a paper...

2012-07-18 01:14:06

Managers who have more -- and more subtle — tools may be able to generate more profit from a sustainable fishery than they can using marine protected areas alone As spatial planning is used increasingly to manage fisheries and other ocean resources, researchers are working to determine the best ways to use and refine the various spatial management tools. Among them are marine protected areas (MPAs), one of the most common methods, which limit or entirely curtail fishing in a given...

2012-07-11 13:59:22

The cause of rapid sea level rise in the past has been found by scientists at the University of Bristol using climate and ice sheet models. The process, named 'saddle-collapse', was found to be the cause of two rapid sea level rise events: the Meltwater pulse 1a (MWP1a) around 14,600 years ago and the '8,200 year' event. The research is published today in Nature. Using a climate model, Dr Lauren Gregoire of Bristol's School of Geographical Sciences and colleagues unearthed the series of...

2012-07-11 05:35:31

UK scientists will measure the effect on the marine environment and wildlife of devices that harness tide and wave energy using sonar technology that has, for the first time, been successfully deployed on the seabed. Renewable energy from tidal currents can be generated using turbines in the tidal flow, and wave energy can be captured in a number of different ways. FLOWBEC (Flow and Benthic Ecology 4D) is a three-year, £1.2 million project that brings together a consortium of...

North Atlantic Phytoplankton Bloom Triggered By Eddies
2012-07-06 05:16:57

redOrbit Staff & Wire Reports - Your Universe Online Scientists studying the annual growth of tiny plants in the North Atlantic Ocean have discovered that this year´s growth spurt began before the sun was able to offer the light needed to fuel the yearly phenomenon. The annual growth spurt of plankton, which is known as the North Atlantic Bloom, takes place each Spring, and results in an immense number of phytoplankton bursting into existence -- first "greening," then...

As Ground Radars Switch Off, SMOS Satellite Measurements Improve
2012-07-04 15:13:20

Over a dozen radio signals that have hindered data collection on ESA´s SMOS water mission have been switched off. The effort also benefits satellites such as NASA´s Aquarius mission, which measures ocean salinity at the same frequency. We all know what happens when you place a cell phone too close to a speaker: seconds before the phone rings, that obnoxious buzz interrupts your favourite song. This is radio interference — an unwanted reception of radio signals. Not only...

Neemo Crew Resurface From Their Underwater World
2012-07-02 03:00:04

[ Watch the Video ] ESA astronaut Tim Peake and his Neemo crewmates resurfaced recently after spending 12 days underwater off Florida´s Atlantic coast. The aquanauts tested equipment and techniques for future space exploration as well as finding time for educational experiments. Although only 20 m under the Atlantic Ocean, the voyage home took 17 hours. Living underwater requires a long decompression to allow the aquanauts´ bodies to adapt to normal surface pressure. Being...

'Hotspot' Causing Sea Level Rise Acceleration In Eastern US
2012-06-25 04:46:11

The sea level of the eastern coast of the United States is accelerating at a much faster rate than the country's other coasts due to global warming, claim researchers from the U.S. Geological Survey (USGS). According to Damian Carrington, a reporter with the UK newspaper The Guardian, the sea level rise of the "densely populated" Atlantic coast from Cape Hatteras, North Carolina to Boston, Massachusetts is increasing at a rate three to four times faster than the rest of the country's...


Latest Oceanography Reference Libraries

Baffin Bay
2013-04-18 13:21:50

Baffin Bay, which is located between Baffin Island and the southwest coast of Greenland, is a marginal sea of the North Atlantic Ocean. It’s connected to the Atlantic by Davis Strait and the Labrador Sea. A narrower Nares Strait connects the Baffin Bay with the Arctic Ocean. The Baffin Bay is an arm of the Atlantic Ocean that is bordered by Baffin Island towards the west, Greenland towards the east, and Ellesmere Island towards the north. It is connected to the Atlantic through the Davis...

Current Sea Level Rise
2013-04-01 10:39:21

The sea levels all around the world are rising. Current sea-level rise has the potential to affect human populations and the natural environment. Two key factors have contributed to the observed sea level rise. The first is thermal expansion: as the ocean water warms, it expands. The second is from the influence of land-based ice because of increased melting. The major store of water on land is found in the glaciers and the ice sheets. The rising of sea levels is one of several lines of...

Ocean Acidification
2013-04-01 10:32:20

Ocean acidification is the name that was given to the ongoing decrease in the pH of Earth’s oceans, a cause of the uptake of anthropogenic carbon dioxide from the atmosphere. About 30 to 40 percent of the carbon dioxide that is released by humans into the atmosphere dissolves into the lakes, oceans, and rivers. To maintain the chemical equilibrium, some of it reacts with the water to create carbonic acid. Some of these extra carbonic acid molecules react with a water molecule to provide a...

Basic Ocean Terms
2013-02-05 12:52:11

Image Credit: Meteorologist Joshua Kelly When meteorologists are forecasting for ocean-going vessels, there are a few terms that we need to understand. The first term is wavelength. Wavelength is defined as the distance between two crests or between two troughs as seen in the image above. The example above highlights the crest to crest concept of wavelength. The next term that we use is wave height, and to determine this, we first must look at the wave when it passes our station. When...

Ocean Analysis for November 17, 2012
2012-11-17 08:24:58

Point #1: Warm finger- This region inside the area marked number 1, represents a warm finger of the ocean temperatures. What is occurring is that the warmer air is being pushed faster in this region than the surrounding locations giving us this little finger of warmer temps in that region. Point #2: Warm Eddie- This is a region of warmer temps surrounded on all sides by colder water. Eddies are a closed circulation of water in the ocean that has in this case warmer temps around it. These...

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Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
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