Water does weigh something; about 8.3 pounds per gallon. In research published this week, scientists from the National Oceanography Center and Newcastle University have proposed an idea that will assess the mass of the world ocean by weighing it at a single point. But there is a catch. Global sea level is currently rising at about 3 mm per year, but
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oceanography
The deployment of sensors in 15 regions of the world’s oceans shows an extremely wide variation in how rapidly waters are becoming acidified, according to research conducted by the Scripps Institution of Oceanography.
Scripps scientists have deployed more than 50 of the
U.S. researchers have developed broadband acoustic systems that they say will improve the ability to count and classify fish and zooplankton, an advance they liken to jumping from black and white television to high-definition TV.
While oceanographers have long used acoustic measurements to determine what lies under the sea, existing technologies use sound waves that measure only one or a few frequencies, producing data that can be ambiguous and open to different interpretations, particularly for small fish and zooplankton.