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Since
May 1996, the National
Oceanic and Atmospheric Administration's Pacific
Marine Environmental Laboratory in
Seattle, Washington, has been monitoring the eastern
equatorial Pacific Ocean using hydrophones. These
underwater microphones detect a whole host of underwater
sounds, from earthquakes to ocean currrents, ship noise,
and whale calls, to "mystery" sounds that scientists haven't
yet been able to identify. Visit this NOAA Web
page to display and listen in to some of the
recorded signals.
Earthquake
activity in the eastern equatorial Pacific in 2000–2001
is depicted on the map below in red. Can you locate our
Extreme 2004 dive site on this map? Why is it important for
scientists to monitor
earthquake activity? Map
courtesy of NOAA's Pacific
Marine Environmental Laboratory.
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