北海道釧路・十勝沖の海底ケーブル型観測システムを用いたナガスクジラの鳴音の季節依存性

DOI Web Site Web Site 参考文献19件

書誌事項

タイトル別名
  • Seasonality of Fin Whale Calls Detected from the Deep Sea Floor Observatory off Kushiro–Tokachi
  • 北海道釧路・十勝沖の海底ケーブル型観測システムを用いたナガスクジラの嗚音の季節依存性
  • ホッカイドウ クシロ ・ トカチオキ ノ カイテイ ケーブルガタ カンソク システム オ モチイタ ナガスクジラ ノ オオン ノ キセツ イソンセイ

この論文をさがす

抄録

<p>Automatic acoustic detection is a useful method for monitoring phonating marine animals. Fin whale calls consist of frequency down-sweeps at around 20 Hz with a duration of approximately 1 s. These low frequency acoustic data were recorded with four hydrophones located on the ocean floor off Kushiro and Tokachi, Hokkaido, Japan. The fin whale calls were automatically detected by calculating the ratio of signal energy to background noise and the duration of the calls. With respect to manually detected calls, correct detection and false alarms using the proposed method were 69.5% and 4.4%, respectively. A total of 2,865,403 calls were detected from data collected during 2,981 days from January 2007 to February 2015. The number of detected calls showed clear seasonal differences, high in October to February period.</p>

収録刊行物

  • 海洋音響学会誌

    海洋音響学会誌 44 (1), 13-22, 2017

    特定非営利活動法人 海洋音響学会

参考文献 (19)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ