Athelstan Spilhaus
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Athelstan Frederick Spilhaus was a South African-American geophysicist and oceanographer. Among other accomplishments, Spilhaus is credited with proposing the establishment of Sea Grant Colleges at a
Spilhaus is standing to the right during the announcement of plans for the building and launching of the world's first human-made satellite, July 29, 1955. (NASA)
Spilhaus bathythermograph, 1937
Thermocline
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A thermocline is a distinct layer based on temperature within a large body of fluid with a high gradient of distinct temperature differences associated with depth. In the ocean, the thermocline divide
Athelstan Spilhaus
…1936, Spilhaus joined the Woods Hole Oceanographic Institution in Massachusetts, where he developed the bathythermograph, which made the measurement of ocean depths and temperatures from a moving vessel possible, a device which proved indispensable to submarine warfare. This invention established his international reputation. He…
Two moon jellyfish disturbing a thermocline in the top water layer of Gullmarn fjord, Sweden