Who put that mountain there?
Jan. 27th, 2005 11:44 pmNavy Sub hits uncharted undersea mountain.
Between this and the December 26 tsunami, the need for extensive, detailed, high-resolution mapping of the ocean floor has become evident.
That's what I do.
Resume available on request.
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Date: 2005-01-28 02:35 pm (UTC)-- ArchTeryx
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Date: 2005-01-28 03:24 pm (UTC)no subject
Date: 2005-01-28 03:53 pm (UTC)There are two types of sonar. "Passive" sonar is used simply to listen in -- say, for the sound of another sub's propellers (screws). "Active" sonar is more like a bat's echolocation, though not nearly as precise.
Why would a sub bother with passive sonar? Because other subs can hear active sonar.
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Date: 2005-01-28 04:00 pm (UTC)