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| ファイル | 記述 | サイズ | フォーマット | |
|---|---|---|---|---|
| 5thSEASTAR_79.pdf | 85.05 kB | Adobe PDF | 見る/開く |
| タイトル: | Remote acoustic monitoring of aquatic mammals |
| 著者: | AKAMATSU, TOMONARI WANG, DING WANG, KEXIONG |
| キーワード: | echolocation finless porpoise dolphin sonar underwater sound |
| 発行日: | 2004 |
| 出版者: | Graduate school of Informatics, Kyoto University |
| 誌名: | Proceedings of the International Symposium on SEASTAR2000 and Bio-logging Science (The 5th SEASTAR2000 Workshop) |
| 開始ページ: | 79 |
| 終了ページ: | 83 |
| 抄録: | Underwater ultrasonic sound of finless porpoises Neophocaena phocaenoides were monitored concurrent with visual observations in the Yangtze River, China. In a total of a 774 km cruise, 588 finless porpoises were sighted by visual observation and 44, 864 ultrasonic pulses were recorded. The acoustic monitoring system could detect presence of the finless porpoises 82% of the time. False alarms in the system occurred with a frequency of 0.9%. The high frequency acoustical observation is suggested as an effective method for field surveys of small cetaceans, which produce high frequency sonar signals. |
| 記述: | Organized by Graduate School of Informatics, Kyoto University ; JSPS Bangkok Liaison Office ; Japanese Society of Bio-logging Science ; Informatics Research Center for Development of Knowledge Society Infrastructure December 13-15, 2004, Imperial Tara Hotel, Bangkok, Thailand |
| URI: | http://hdl.handle.net/2433/44110 |
| 出現コレクション: | Proceedings of the International Symposium on SEASTAR2000 and Bio-logging Science (The 5th SEASTAR2000 Workshop) |
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