Effects of bladdered fish on ambient noise measurements close to the port of Rotterdam
conference paper
Ambient noise in the frequency range 25 Hz to 80 kHz was measured at a site close to the Port of Rotterdam in September 2008, before construction began of a port extension known as ‘Maasvlakte 2’ [http://www.maasvlakte2.com/en/index/], and in September-October 2009 (during construction). Day-night differences are present in the 2009 measurements that were not observed in 2008. The largest diurnal change appears in third octave bands close to 3 kHz, in the form of an absorption band that appears only at night. The observations are consistent with scattering and absorption of sound by small bladdered fish, of length 3 to 5 cm.
TNO Identifier
462338
Source title
Proceedings 4th International Conference and Exhibition on Underwater Acoustic Measurements - Technologies & Results - UAM 2011, 20-24 June 2011, Kos, Greece
Pages
723-730