caa a22 4500 397551215 CHVBK 20180308164750.0 cr unu---uuuuu 161202e199610 xx s 000 0 eng 10.1006/jmsc.1996.0099 doi (NATIONALLICENCE)oxford-10.1006/jmsc.1996.0099 A re-evaluation of relationships between fish size, acoustic frequency, and target strength [Elektronische Daten] [Sam McClatchie, Jon Alsop, Roger F. Coombs] There are many measurements of dorsal aspect target strength of fish, but relatively few studies compare estimation methods or attempt to combine data from different studies into general relations between fish size, acoustic frequency and target strength (or acoustic cross-section). We edited and updated earlier summary regressions relating fish size, acoustic frequency and acoustic cross-section. Experimental measurements on marine fish were separated into swimbladder and non-swimbladder species, model results compared with experimental data, target strengths of marine, and freshwater fish were contrasted, and previous and new target strengths of commercial New Zealand fish species were placed in the context of the new regressions. Analysis of variance was used to show significant effects of species, freshwater vs. marine, swimbladder vs. non-swimbladder fish, model vs. experimental, and dead vs. alive fish on the relationship between maximum dorsal aspect target strength and fish length. For experimental results on gadoids we found significant species and live vs. dead (or stunned) fish effects on the target strength to length relationship. The quadratic dependence of target strength on fish length was also tested and found to be the exception rather than the rule. Existing pitch tilt angle data was compiled and a normal distribution with standard deviation of at least 15° was required to describe most distributions. © 1996 International council for the Exploration of the Sea Articles nationallicence acoustics nationallicence target strength nationallicence length nationallicence regression nationallicence orientation nationallicence McClatchie Sam National Institute of Water and Atmosphere PO Box 14-901, Kilbirnie, Wellington, New Zealand aut Alsop Jon Department of Mathematics and Statistics, University of Otago Dunedin, New Zealand aut Coombs Roger F. National Institute of Water and Atmosphere PO Box 14-901, Kilbirnie, Wellington, New Zealand aut ICES Journal of Marine Science Oxford University Press 53/5(1996-10), 780-791 1054-3139 53:5<780 1996 53 icesjms https://doi.org/10.1006/jmsc.1996.0099 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1006/jmsc.1996.0099 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- McClatchie Sam National Institute of Water and Atmosphere PO Box 14-901, Kilbirnie, Wellington, New Zealand aut NATIONALLICENCE 700 1- Alsop Jon Department of Mathematics and Statistics, University of Otago Dunedin, New Zealand aut NATIONALLICENCE 700 1- Coombs Roger F. National Institute of Water and Atmosphere PO Box 14-901, Kilbirnie, Wellington, New Zealand aut NATIONALLICENCE 773 0- ICES Journal of Marine Science Oxford University Press 53/5(1996-10), 780-791 1054-3139 53:5<780 1996 53 icesjms Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford