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Estimation of target strength of Sardina pilchardus and Sardinella aurita by theoretical approach
http://hdl.handle.net/10069/36597
http://hdl.handle.net/10069/36597eadfdf88-afb9-4925-8004-2d7534ba4350
名前 / ファイル | ライセンス | アクション |
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FisSci82_417.pdf (823.9 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-06-01 | |||||
タイトル | ||||||
タイトル | Estimation of target strength of Sardina pilchardus and Sardinella aurita by theoretical approach | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Sardina pilchardus | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Sardinella aurita | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Target strength | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Theoretical approach | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Prolate spheroid model | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Ayoubi, Salaheddine El
× Ayoubi, Salaheddine El× Mamza, Kamal× Fujino, Tadanori× Abe, Koki× Amakasu, Kazuo× Miyashita, Kazushi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The target strength (TS) patterns of Sardina pilchardus and Sardinella aurita at 38 and 120 kHz were estimated by a prolate-spheroid model, using measurements of swimbladder length and width. The ratio of swimbladder length to total length (TL) was similar in both species, however the ratio of swimbladder width to TL was smaller and more variable for S. aurita. Assuming a normal distribution of fish swimming orientation angle (θfish) with mean ± standard deviation (SD) of 0 ± 10°, the normalized (by TL) average TS (b20) was estimated to be -64.0 dB (38 kHz) and -65.2 dB (120 kHz) for S. pilchardus, and -66.2 dB (38 kHz) and -67.2 dB (120 kHz) for S. aurita. Compared with currently applied b20 values at 38 kHz, our results under four different θfish assumptions (0 ± 10°, 0 ± 15°, -5 ± 10°, and -5 ± 15°) were 6-9 dB higher for S. pilchardus and 5-7 dB higher for S. aurita. This suggests four- to eightfold overestimation risk for S. pilchardus and three- to fivefold overestimation risk for S. aurita when using the currently applied b20 values. | |||||
書誌情報 |
Fisheries Science 巻 82, 号 3, p. 417-423, 発行日 2016-05 |
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出版者 | ||||||
出版者 | 日本水産学会 | |||||
出版者別言語 | ||||||
The Japanese Society of Fisheries Science | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 09199268 | |||||
EISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 14442906 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1007/s12562-016-0986-8 | |||||
権利 | ||||||
権利情報 | c 2016 The Japanese Society of Fisheries Science | |||||
権利 | ||||||
権利情報 | The final publication is available at www.springerlink.com | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Fisheries Science, 82(3), pp.417?423; 2016 |