In situ source levels of mulloway (Argyrosomus japonicus) calls.
Mulloway (Argyrosomus japonicus) in Mosman Bay, Western Australia produce three call categories associated with spawning behavior. The determination of call source levels and their contribution to overall recorded sound pressure levels is a significant step towards estimating numbers of calling fish...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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Acoustical Society of America
2012
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/42558 |
| _version_ | 1848756453080301568 |
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| author | Parsons, Miles McCauley, Robert Mackie, M Siwabessy, Paulus Duncan, Alexander |
| author_facet | Parsons, Miles McCauley, Robert Mackie, M Siwabessy, Paulus Duncan, Alexander |
| author_sort | Parsons, Miles |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Mulloway (Argyrosomus japonicus) in Mosman Bay, Western Australia produce three call categories associated with spawning behavior. The determination of call source levels and their contribution to overall recorded sound pressure levels is a significant step towards estimating numbers of calling fish within the detection range of a hydrophone. The source levels and ambient noise also provide significant information on the impacts anthropogenic activity may have on the detection of A. japonicus calls. An array of four hydrophones was deployed to record and locate individual fish from call arrival-time differences. Successive A. japonicus calls produced samples at various ranges between 1 and 100 m from one of the array hydrophones. The three-dimensional localization of calls, together with removal of ambient noise, allowed the determination of source levels for each call category using observed trends in propagation losses and interference. Mean source levels (at 1 m from the hydrophone) of the three call categories were calculated as 163 ± 16 dB re 1 μPa for Category 1 calls (short call of 2–5 pulses); 172 ± 4 dB re 1 μPa for Category 2 calls (long calls of 11–32 pulses); and 157 ± 5 dB re 1 μPa for Category 3 calls (series of successive calls of 1–4 pulses, increasing in call rate). |
| first_indexed | 2025-11-14T09:12:26Z |
| format | Journal Article |
| id | curtin-20.500.11937-42558 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:12:26Z |
| publishDate | 2012 |
| publisher | Acoustical Society of America |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-425582019-02-19T05:35:18Z In situ source levels of mulloway (Argyrosomus japonicus) calls. Parsons, Miles McCauley, Robert Mackie, M Siwabessy, Paulus Duncan, Alexander underwater acoustic propagation acoustic arrays acoustic signal processing acoustic noise hydrophones Mulloway (Argyrosomus japonicus) in Mosman Bay, Western Australia produce three call categories associated with spawning behavior. The determination of call source levels and their contribution to overall recorded sound pressure levels is a significant step towards estimating numbers of calling fish within the detection range of a hydrophone. The source levels and ambient noise also provide significant information on the impacts anthropogenic activity may have on the detection of A. japonicus calls. An array of four hydrophones was deployed to record and locate individual fish from call arrival-time differences. Successive A. japonicus calls produced samples at various ranges between 1 and 100 m from one of the array hydrophones. The three-dimensional localization of calls, together with removal of ambient noise, allowed the determination of source levels for each call category using observed trends in propagation losses and interference. Mean source levels (at 1 m from the hydrophone) of the three call categories were calculated as 163 ± 16 dB re 1 μPa for Category 1 calls (short call of 2–5 pulses); 172 ± 4 dB re 1 μPa for Category 2 calls (long calls of 11–32 pulses); and 157 ± 5 dB re 1 μPa for Category 3 calls (series of successive calls of 1–4 pulses, increasing in call rate). 2012 Journal Article http://hdl.handle.net/20.500.11937/42558 10.1121/1.4756927 Acoustical Society of America fulltext |
| spellingShingle | underwater acoustic propagation acoustic arrays acoustic signal processing acoustic noise hydrophones Parsons, Miles McCauley, Robert Mackie, M Siwabessy, Paulus Duncan, Alexander In situ source levels of mulloway (Argyrosomus japonicus) calls. |
| title | In situ source levels of mulloway (Argyrosomus japonicus) calls. |
| title_full | In situ source levels of mulloway (Argyrosomus japonicus) calls. |
| title_fullStr | In situ source levels of mulloway (Argyrosomus japonicus) calls. |
| title_full_unstemmed | In situ source levels of mulloway (Argyrosomus japonicus) calls. |
| title_short | In situ source levels of mulloway (Argyrosomus japonicus) calls. |
| title_sort | in situ source levels of mulloway (argyrosomus japonicus) calls. |
| topic | underwater acoustic propagation acoustic arrays acoustic signal processing acoustic noise hydrophones |
| url | http://hdl.handle.net/20.500.11937/42558 |