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http://dx.doi.org/10.3796/KSFT.2004.40.3.189

Underwater Sound Characteristics of Gray Whale(Eschrichtius robustus)  

Shin, Hyeong-Il (Pukyong National University)
Lee, Young-Hoon (Ulsan Munhwa Broadcasting Corp.)
Seo, Du-Ok (Cheju National University)
Lee, Dae-Jae (Pukyong National University)
Hwang, Doo-Jin (Yosu National University)
Kim, Zang-Geun (National Fisheries Research and Development Institute)
Lee, Yoo-Won (Pukyong National University)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.40, no.3, 2004 , pp. 189-195 More about this Journal
Abstract
The underwater sound of California gary whale was analyzed to discuss obtained results from the previous data to compare the underwater sound between Korean gray whale and California gray whale. The frequency of low frequency rumble which occupy about 50% of the underwater sound changed to max. 654Hz and the average of its lasted time was 570msec. The range of frequency variation was coincided as compared with the previous data. The range of frequency variation for the bubble type sounds and knocks was 24${\sim}$1029Hz, respectively. The average of lasted time was 1100msec and 1364msec, respectively. The range of frequency variation and lasted time of bubble type sounds was higher than the previous result while the sound of knocks was coincided. The range of frequency variation for the sound of bong, pluses and chirps was 34${\sim}$213Hz, 75${\sim}$360Hz and 120${\sim}$200Hz, respectively and the average of lasted time was 84msec, 873msec and 80msec, respectively.
Keywords
gray whale; underwater sound; low frequency rumble; knocks; pluses;
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