Short-term variability in nighttime scattering strength levels at one site in the eastern Algero-Provençal Basin
Citable URI
https://hdl.handle.net/1912/7869Location
Algero-Provençal BasinEastern Mediterranean Sea
DOI
10.1575/1912/7869Keyword
Underwater acoustics; Sound-wavesAbstract
A sequence of nine nighttime, broadband volume scattering
strength measurements obtained in 1973 over a period of
approximately one hour was used to study the short-term
variability of scattering strength in 100 Hz bands over
frequencies ranging from 100 Hz to 24 kHz and depths ranging from
400 meters to 1000 meters. The variability was found to be
independent of depth and was least in the frequency range three
kHz to eight kHz where the standard deviation was approximately
four dB less than the mean level, Outside this frequency range
the standard deviation was somewhat greater than the mean level.