Whale detection and tracking using active sonar is a subject of recent study [J. H. Miller, D. C. Potter, T. Weber, and J. Felix, J. Acoust. Soc. Am. 105, 992 (1999)]. In that previous work, the measured target strength of a northern right whale (Eubalaena glacialis) was found to be less than that measured for a humpback whale (Megaptera novaeangliae) of the same size and aspect (about 0 and 5 dB, respectively). The difference was explained by modeling the thicker blubber of the right whale as a lossy layer in a plane wave reflection coefficient. However, values for the acoustic properties of the blubber were estimated from tissue properties of other mammals [R. C. Chivers and R. J. Parry, J. Acoust. Soc. Am. 63 (1978)]. In April, 1999, a 60‐ton northern right whale named Staccato was found dead near Cape Cod. Blubber samples were acquired by the National Marine Fisheries Service and acoustic properties determined using a multi‐sensor core logger in URI Marine Geomechanics Laboratory. Sound speed and density data have been used to refine the plane wave reflection coefficient model and corroborate the earlier work. [Work supported by NMFS.]
Meeting abstract. No PDF available.
The dependence of target strength of the northern right whale (Eubalaena glacialis) on the acoustic properties of blubber
James H. Miller, Thomas Weber, Angela Tuttle, David C. Potter; The dependence of target strength of the northern right whale (Eubalaena glacialis) on the acoustic properties of blubber. J. Acoust. Soc. Am. 1 October 1999; 106 (4_Supplement): 2163. https://doi.org/10.1121/1.427198
Download citation file: