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Ocean

An ocean (from Greek Ωκεανός, Okeanos (Oceanus)) is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (an area of some 361 million square kilometers) is covered by ocean, a continuous body of water that is customarily divided into several principal oceans and smaller seas. More than half of this area is over 3,000 meters (9,800 ft) deep. Average oceanic salinity is around 35 parts per thousand (ppt) (3.5%), and nearly all seawater has a salinity in the range of 30 to 38 ppt.

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NASA infrared satellite imagery shows Tropical Storm Mawar strengthening

The infrared instrument on NASA's Aqua satellite captured temperature data on Tropical Storm Mawar in the western North Pacific Ocean and showed that the cloud top temperatures were growing colder. That's ...

Space & Earth / Earth Sciences

created 8 hours ago | popularity not rated yet | comments 0

Expedition studies acid impacts on Arctic

The effects of ocean acidification on Arctic seas will be studied by a team of 30 researchers, including Dr Toby Tyrrell from the University of Southampton, who set sail from the UK today (1 June), venturing ...

Space & Earth / Environment

created 13 hours ago | popularity not rated yet | comments 0

Heavy ice could delay start of Shell Alaska's Arctic drilling

The heaviest polar ice in more than a decade could postpone the start of offshore oil drilling in the Arctic Ocean until the beginning of August, a delay of up to two weeks, Shell Alaska officials said.

Space & Earth / Environment

created May 28, 2012 | popularity 5 / 5 (2) | comments 38

First mission for new ocean floor observatory

On Saturday, May 26, the German research vessel POSEIDON sailed from the port of Bergen, Norway, for an expedition to the Norwegian Sea. On board the newly developed ocean floor observatory, MoLab, is being ...

Space & Earth / Earth Sciences

created 17 hours ago | popularity not rated yet | comments 0

10 million years needed to recover from mass extinction

(Phys.org) -- It took some 10 million years for Earth to recover from the greatest mass extinction of all time, latest research has revealed.

Space & Earth / Earth Sciences

created May 27, 2012 | popularity 4.4 / 5 (8) | comments 21 | with audio podcast

Radioactive bluefin tuna crossed the Pacific to US

Across the vast Pacific, the mighty bluefin tuna carried radioactive contamination that leaked from Japan's crippled nuclear plant to the shores of the United States 6,000 miles away - the first time a huge ...

Space & Earth / Environment

created May 28, 2012 | popularity 5 / 5 (4) | comments 15

A 'B12 shot' for marine algae? Scientists find key protein for algae growth in the ocean

Scientists have revealed a key cog in the biochemical machinery that allows marine algae at the base of the oceanic food chain to thrive. They have discovered a previously unknown protein in algae that grabs an essential ...

Biology / Cell & Microbiology

created May 31, 2012 | popularity 5 / 5 (2) | comments 3 | with audio podcast

Electric Moon jolts the solar wind

(Phys.org) -- With the Moon as the most prominent object in the night sky and a major source of an invisible pull that creates ocean tides, many ancient cultures thought it could also affect our health or ...

Space & Earth / Space Exploration

created May 30, 2012 | popularity 4.7 / 5 (7) | comments 0 | with audio podcast

Typhoon Sanvu had a bad weekend

Typhoon Sanvu had a bad weekend. It went from Typhoon status on May 25 to an extra-tropical storm and finally into a remnant low pressure area by May 29, 2012.

Space & Earth / Earth Sciences

created May 29, 2012 | popularity not rated yet | comments 0

CryoSat goes to sea

CryoSat was launched in 2010 to measure sea-ice thickness in the Arctic, but data from the Earth-observing satellite have also been exploited for other studies. High-resolution mapping of the topography of the ocean floor ...

Space & Earth / Earth Sciences

created May 29, 2012 | popularity 5 / 5 (3) | comments 0