Scroll to the right to view the rest of this seismic profile. --->
This portion of a seismic "profile" of the seafloor on the
outer edge of
the Mississippi continental shelf was created by an echo sounder. The instrument,
which is on the bottom of a ship, sends a pulse of sound to the seafloor.
The seafloor and sediment layers beneath the seafloor reflect the sound
back to
the echo sounder, which creates a "cross section" of the seafloor
and its sediments.
