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Aquarius/SAC-D
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Delta II rocket map of ocean salinity, 2011
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Delta II rocket
Delta II rocket A Delta II rocket launching with the Aquarius/SAC-D spacecraft from Vandenberg Air Force Base, California, June 10, 2011.

Aquarius/SAC-D

U.S.-Argentinian space mission
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Also known as: SAC-D/Aquarius
Written by
Erik Gregersen
Erik Gregersen is a senior editor at Encyclopaedia Britannica, specializing in the physical sciences and technology. Before joining Britannica in 2007, he worked at the University of Chicago Press on the...
Erik Gregersen
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The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
The Editors of Encyclopaedia Britannica
Article History
Quick Facts
Also called:
SAC-D/Aquarius
Date:
June 10, 2011 - June 8, 2015
See all related content

Aquarius/SAC-D, joint U.S.-Argentine space mission to map the salinity of Earth’s oceans. Aquarius/Satélite de Aplicaciones Científicas-D (SAC-D) was launched by a Delta II rocket from Vandenberg Air Force Base in California on June 10, 2011. Salinity, or salt content, plays a major role in the movement of ocean currents and traces the amount of evaporation from and precipitation onto the ocean that occurs in the water cycle. Aquarius was a U.S.-built instrument consisting of a radiometer and a scatterometer designed to measure salinity. The radiometer measured changes in the ocean’s brightness in three beams in radio waves. These changes in ...(100 of 268 words)

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