Observing the behavioral response of herring exposed to mid‐frequency sonar signals.
نویسندگان
چکیده
منابع مشابه
Behavioral responses of herring (Clupea harengus) to 1-2 and 6-7 kHz sonar signals and killer whale feeding sounds.
Military antisubmarine sonars produce intense sounds within the hearing range of most clupeid fish. The behavioral reactions of overwintering herring (Clupea harengus) to sonar signals of two different frequency ranges (1-2 and 6-7 kHz), and to playback of killer whale feeding sounds, were tested in controlled exposure experiments in Vestfjorden, Norway, November 2006. The behavior of free rang...
متن کاملNavy Sonar Signals in Norwegian Waters : Behavioral Response Studies of Cetaceans to
Data on the responsiveness of cetaceans to sonar signals are lacking, with only a few species having been studied in relation to a few types of sonar signals, mostly SURTASS-LFA (Nowacek et al., 2007). Marine mammals have been shown to react to underwater noise (Richardson et al., 1995), and captive research has documented hearing (Schlundt et al., 2000) and stress (Romano et al., 2004) effects...
متن کامل3S: Behavioral Response Studies of Cetaceans to Navy Sonar Signals in Norwegian Waters
Another goal of the program is to assess the effectiveness of “ramp-up,” a common mitigation protocol in which source levels are gradually increased prior to the onset of full-level transmissions. Ramp-up is thought to give nearby animals some time to move away before sonar transmissions reach maximum levels. However, it is unknown whether or not this protocol is actually effective. We have dev...
متن کاملDetecting Atlantic herring by parametric sonar.
The difference-frequency band of the Kongsberg TOPAS PS18 parametric sub-bottom profiling sonar, nominally 1-6 kHz, is being used to observe Atlantic herring. Representative TOPAS echograms of herring layers and schools observed in situ in December 2008 and November 2009 are presented. These agree well with echograms of volume backscattering strength derived simultaneously with the narrowband S...
متن کاملCetaceans and Naval Sonar: Behavioral Response as a Function of Sonar Frequency
Data on the responsiveness of free-ranging cetaceans to mid-frequency sonar signals are lacking, with only a few species having been studied in relation to a few types of sonar signals, mostly SURTASSLFA (Nowacek et al., 2007). This specific project was initially motivated by observations of possible killer whale (Orcinus orca) reactions to sonars, in the Vestfjord basin of Norway and the USS S...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 2010
ISSN: 0001-4966
DOI: 10.1121/1.3383430