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A Statistical Analysis for Estimatin...

Schroth-Miller, Madeline L.

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A Statistical Analysis for Estimating Fish Number Density with the Use of a Multibeam Echosounder.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	A Statistical Analysis for Estimating Fish Number Density with the Use of a Multibeam Echosounder./
Author:	Schroth-Miller, Madeline L.
Description:	79 p.
Notes:	Source: Masters Abstracts International, Volume: 52-03.
Contained By:	Masters Abstracts International52-03(E).
Subject:	Applied Mathematics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1524298
ISBN:	9781303543210

A Statistical Analysis for Estimating Fish Number Density with the Use of a Multibeam Echosounder.
Schroth-Miller, Madeline L.

A Statistical Analysis for Estimating Fish Number Density with the Use of a Multibeam Echosounder. - 79 p.

Source: Masters Abstracts International, Volume: 52-03.

Thesis (M.S.)--University of New Hampshire, 2013.

Fish number density can be estimated from the normalized second moment of acoustic backscatter intensity [Denbigh et al., J. Acoust. Soc. Am. 90, 457-469 (1991)]. This method assumes that the distribution of fish scattering amplitudes is known and that the fish are randomly distributed following a Poisson volume distribution within regions of constant density. It is most useful at low fish densities, relative to the resolution of the acoustic device being used, since the estimators quickly become noisy as the number of fish per resolution cell increases. New models that include noise contributions are considered. The methods were applied to an acoustic assessment of juvenile Atlantic Bluefin Tuna, Thunnus thynnus. The data were collected using a 400 kHz multibeam echo sounder during the summer months of 2009 in Cape Cod, MA. Due to the high resolution of the multibeam system used, the large size (approx. 1.5 m) of the tuna, and the spacing of the fish in the school, we expect there to be low fish densities relative to the resolution of the multibeam system. Results of the fish number density based on the normalized second moment of acoustic intensity are compared to fish packing density estimated using aerial imagery that was collected simultaneously.

ISBN: 9781303543210Subjects--Topical Terms:

1669109
Applied Mathematics.

A Statistical Analysis for Estimating Fish Number Density with the Use of a Multibeam Echosounder.
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020 $a 9781303543210
035 $a (MiAaPQ)AAI1524298
035 $a AAI1524298
040 $a MiAaPQ $c MiAaPQ
100 1 $a Schroth-Miller, Madeline L. $3 2101369
245 1 2 $a A Statistical Analysis for Estimating Fish Number Density with the Use of a Multibeam Echosounder.
300 $a 79 p.
500 $a Source: Masters Abstracts International, Volume: 52-03.
500 $a Adviser: Thomas C. Weber.
502 $a Thesis (M.S.)--University of New Hampshire, 2013.
520 $a Fish number density can be estimated from the normalized second moment of acoustic backscatter intensity [Denbigh et al., J. Acoust. Soc. Am. 90, 457-469 (1991)]. This method assumes that the distribution of fish scattering amplitudes is known and that the fish are randomly distributed following a Poisson volume distribution within regions of constant density. It is most useful at low fish densities, relative to the resolution of the acoustic device being used, since the estimators quickly become noisy as the number of fish per resolution cell increases. New models that include noise contributions are considered. The methods were applied to an acoustic assessment of juvenile Atlantic Bluefin Tuna, Thunnus thynnus. The data were collected using a 400 kHz multibeam echo sounder during the summer months of 2009 in Cape Cod, MA. Due to the high resolution of the multibeam system used, the large size (approx. 1.5 m) of the tuna, and the spacing of the fish in the school, we expect there to be low fish densities relative to the resolution of the multibeam system. Results of the fish number density based on the normalized second moment of acoustic intensity are compared to fish packing density estimated using aerial imagery that was collected simultaneously.
590 $a School code: 0141.
650 4 $a Applied Mathematics. $3 1669109
650 4 $a Physics, Acoustics. $3 1019086
650 4 $a Statistics. $3 517247
650 4 $a Agriculture, Fisheries and Aquaculture. $3 1020913
690 $a 0364
690 $a 0986
690 $a 0463
690 $a 0792
710 2 $a University of New Hampshire. $b Mathematics. $3 2101370
773 0 $t Masters Abstracts International $g 52-03(E).
790 $a 0141
791 $a M.S.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1524298