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Latest TOPEX/Poseidon Stories

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2008-04-30 17:42:44

PASADENA, Calif. "“ A NASA and French Space Agency (CNES) spacecraft designed to continue a long-term survey of Earth's oceans has arrived at Vandenberg Air Force Base, Calif., for final launch preparations. The new satellite will study ocean circulation and the effect oceans have on weather, climate and how Earth is responding to global climate change. The Ocean Surface Topography Mission, called OSTM for short, will be flown on the Jason-2 spacecraft, which was transported on April...

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2008-04-22 00:15:00

Boosted by the influence of a larger climate event in the Pacific, one of the strongest La Niñas in many years is slowly weakening but continues to blanket the Pacific Ocean near the equator, as shown by new sea-level height data collected by the U.S.-French Jason oceanographic satellite.This La Niña, which has persisted for the past year, is indicated by the blue area in the center of the image along the equator. Blue indicates lower than normal sea...

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2008-02-08 14:09:28

Two different teams of ocean adventurers set records this winter crossing the Tasman Sea. One was the first expedition to kayak from Australia to New Zealand; the other was the first Australians to row across the Tasman Sea. Both took advantage of something that sailors have been relying on since the launch of Topex/Poseidon in 1992"“maps of ocean currents made possible by ocean altimetry. The teams consulted with David Griffin, a research scientist with Australia's Commonwealth...

2006-03-20 13:50:00

Delaware -- Move over, Superman, with your X-ray vision. Marine scientists have now figured out a way to "see through" the ocean's surface and detect what's below, with the help of satellites in space. Using sensor data from several U.S. and European satellites, researchers from the University of Delaware, NASA's Jet Propulsion Laboratory, and the Ocean University of China have developed a method to detect super-salty, submerged eddies called "Meddies" that occur in the Atlantic Ocean off...

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2006-03-15 09:55:00

ESA -- Imagine a space tool so revolutionary it can determine the impact of climate change, monitor the melting of glaciers, discover invisible waves, predict the strength of hurricanes, conserve fish stocks and measure river and lake levels worldwide, among other scientific applications. This instrument is not the subject of a science-fiction novel. In fact, four of them are already operating 800 kilometres above Earth. Fifteen years ago this ground-breaking instrument, called a radar...

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2006-01-05 18:15:18

JPL -- The joint NASA/Centre National d'Etudes Spatiales Topex/Poseidon oceanography satellite ceased operations after nearly 62,000 orbits of Earth. The spacecraft lost its ability to maneuver, bringing to a close a successful 13-year mission. "Topex/Poseidon revolutionized the study of Earth's oceans, providing the first continuous, global coverage of ocean surface topography and allowing us to see important week-to-week oceanic variations," said Dr. Mary Cleave, associate administrator...

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2005-07-09 15:10:00

NASA -- For the first time, researchers have the tools and expertise to understand the rate at which sea level is changing and the mechanisms that drive that change. Sea levels rise and fall as oceans warm and cool and as ice on land grows and shrinks. Other factors that contribute to sea level change are the amount of water stored in lakes and reservoirs and the rising and falling of land in coastal regions. "From the Mississippi Delta to the Maldives Islands off the coast of India to the...

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2005-06-08 13:35:47

ESA -- Earth's oceans are what make this a Blue Planet. Our seas influence the climate, produce most of the oxygen we breathe, serve as a means of transport and a major source of food and resources. Today's World Ocean Day is a chance to learn more about the seas that surround us "“ and how satellite monitoring helps protect them. Wednesday 8 June is the 13th annual World Ocean Day. Created in 1992 at the Earth Summit at Rio de Janeiro, World Ocean Day is an opportunity to...

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2005-01-12 07:52:33

JPL -- For the first time, orbiting satellites have observed and measured a major tsunami event in open ocean, the Indian Ocean tsunami that resulted from the magnitude 9 earthquake southwest of Sumatra on December 26. The measurements are of tremendous value to researchers worldwide and will aid our understanding of these events. U.S. and French teams working in parallel with altimetry data from the joint NASA/French Space Agency Jason and Topex/Poseidon oceanography satellites have...

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2005-01-10 17:45:00

WASHINGTON (AP) -- The tsunami that killed thousands around the Indian Ocean was caught by a series of radar satellites, allowing National Oceanic and Atmospheric Administration scientists to develop measurements of the wave in mid-ocean. While a tsunami can rise to great heights when it arrives at the shore, such waves are often barely noticeable in the ocean. In this case, scientists found that two hours after the undersea quake that launched the tsunami, the wave was about two feet. An...