Modeling the detection range of fish by echolocating bottlenose dolphins and harbor porpoises Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/ws859m297

Copyright 2007 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in J. Acoust. Soc. Am., 121(6): 3954-3962, 2007, DOI: 10.1121/1.2734487, and may be found at  http://link.aip.org/link/?JAS/121/3954. Permalink at http://dx.doi.org/10.1121/1.2734487.

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The target strength as a function of aspect angle were measured for four species of fish using dolphin-like and porpoise-like echolocation signals. The polar diagram of target strength values measured from an energy flux density perspective showed considerably less fluctuation with azimuth than would a pure tone pulse. Using detection range data obtained from dolphin and porpoise echolocation experiments, the detection ranges for the Atlantic cod by echolocating dolphins and porpoises were calculated for three aspect angles of the cod. Maximum detection ranges occurred when the fish was broadside to the odontocete and minimum detection ranges occurred when the cod was in the tail aspect. Maximum and minimum detection ranges for the bottlenose dolphin in a noise-limited environment was calculated to be 93 and 70 m, respectively. In a quiet environment, maximum and minimum detection ranges for the bottlenose dolphin were calculated to be 173 and 107 m, respectively. The detection ranges for the harbor porpoise in a quiet environment were calculated to be between 15 and 27 m. The primary reason for the large differences in detection ranges between both species was attributed to the 36 dB higher source level of the bottlenose dolphin echolocation signals.
Resource Type
Date Available
Date Issued
Citation
  • J. Acoust. Soc. Am., 121(6) 3954-3962, DOI: 10.1121/1.2734487
Keyword
Table of Contents
  • I. Introduction II. Procedure A. Experimental geometry B. Fish subjects Results Fish backscatter Modeling fish detection ranges by echolocating odontocetes Discussion and Conclusions Acknowledgements
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Replaces
Additional Information
  • description.provenance : Submitted by Linda Lamb (llamb@coas.oregonstate.edu) on 2009-09-24T17:19:38Z No. of bitstreams: 1 JAcoustSociety2006_Echolocating.pdf: 903992 bytes, checksum: 8dbb844530eba2afca96f1caffc4e107 (MD5)
  • description.provenance : Approved for entry into archive by Kelly Benoit-Bird(kbenoit@coas.oregonstate.edu) on 2009-09-24T17:23:06Z (GMT) No. of bitstreams: 1 JAcoustSociety2006_Echolocating.pdf: 903992 bytes, checksum: 8dbb844530eba2afca96f1caffc4e107 (MD5)
  • description.provenance : Made available in DSpace on 2009-09-24T17:23:06Z (GMT). No. of bitstreams: 1 JAcoustSociety2006_Echolocating.pdf: 903992 bytes, checksum: 8dbb844530eba2afca96f1caffc4e107 (MD5) Previous issue date: 2007-06
ISSN
  • 0001-4966

Relationships

In Administrative Set:
Last modified: 12/06/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items