Sidescan
Sonar Surveys
A
side scan survey was conducted during 1997 and 1998 in a limited section
of the seeps study area.
On
the records presented below, black indicates reflections and white represents
acoustic shadow areas (negative image). Seeps appear on the record as
large white patches with dark outlines which represent the high reflectivity
contrast between the gas bubbles and the seawater.
The
seep locations are near or within the previous extents of bubbles detected
by 3.5 kHz sonar surveys.
The
side scan survey also reveals geologic structures at the sea floor offshore
of Coal Oil Point. Linear black stripes are reflections from bedding out
crops. These are broken by faults cutting diagonally across the image.
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