Acoustic Fish Reconnaissance

by Kalikhman; I.L.

• ISBN13: 9780849323331
• ISBN10: 0849323339
• Format: Hardcover
• Copyright: 2006-03-21
• Publisher: CRC Press

Summary

Until now, there has not been any work that systematically presents the subject of acoustic fish reconnaissance, details all major aspects of applying acoustic equipment in commercial fish reconnaissance, and offers sufficient analysis of the effectiveness of fish-finding techniques. Acoustic Fish Reconnaissance responds to this need by providing the first overview of the theoretical and practical aspects of acoustic search, detection, interpretation, and population estimation for commercial benefit.This book pays particular attention to the theory and practice of accounting surveys for quantitative estimation of biological resources and fishing conditions in traditional fishing areas. It also analyzes various applications of acoustic technique, based upon the authors' extensive investigations. The text includes the results of the applicability of fish-finding instruments, and offers recommendations on the development of improved acoustic techniques for commercial fleets.

Table of Contents

Preface	vii
Acknowledgments	ix
About the Authors	xi
Introduction	xiii
List of Symbols	xvii
Chapter 1 Sound Scattering by Commercial Items	1	(34)
1.1 Characteristics of the Reflectivity of Aquatic Animals	1	(4)
1.2 Sound Scattering by an Individual Item	5	(10)
1.3 Sound Scattering by Item Concentrations	15	(8)
1.4 Classification of Echo Signals from Commercial Items	23	(4)
1.5 Statistical Properties of Echo Signals from Commercial Items	27	(3)
References	30	(5)
Chapter 2 Scouting Characteristics of Acoustic Instruments	35	(28)
2.1 Range of Detection of Commercial Items	35	(6)
2.2 Zone of Detection of Commercial Items	41	(7)
2.3 Resolving Capacity of Acoustic Instruments	48	(3)
2.4 Rational Choice of Parameters of Acoustic Instruments	51	(11)
References	62	(1)
Chapter 3 Search for Commercial Items with Acoustic Instruments	63	(20)
3.1 Shapes of Distributions of Commercial Items and Their Registration by Acoustic Instruments	63	(9)
3.2 Tactics of Search for Commercial Concentrations	72	(8)
References	80	(3)
Chapter 4 Efficiency of Detection of Commercial Items with Acoustic Instruments	83	(22)
4.1 Possibilities of Detection of Commercial Items by Echo Sounder	83	(7)
4.2 Peculiarities of Detection of Commercial Items	90	(6)
4.3 Possibilities of Detection of Commercial Items by Sonar	96	(4)
4.4 Practical Estimation of Scouting Possibilities of Acoustic Instruments	100	(4)
References	104	(1)
Chapter 5 Species and Size Interpretation of Recordings of Commercial Items	105	(18)
5.1 Species and Size Interpretation of Echograms	105	(7)
5.2 Species and Size Interpretation of Recordings by Instrumental Methods	112	(8)
References	120	(3)
Chapter 6 Quantitative Interpretation of Recordings of Commercial Items	123	(26)
6.1 Theoretical Questions of Determining the Density of Commercial Concentrations	123	(6)
6.2 Methods of Calibration of Acoustic Instruments	129	(5)
6.3 Quantitative Interpretation of Commercial Recordings by Echo Sounder	134	(4)
6.4 Quantitative Interpretation of Commercial Recordings by Sonar	138	(8)
References	146	(3)
Chapter 7 Acoustic Surveys of Commercial Resources	149	(36)
7.1 Acoustic Survey Tactics	150	(8)
7.2 Survey Data Collection and Treatment	158	(4)
7.3 Acoustic Survey Errors	162	(9)
7.4 Acoustic Survey Practice and Perspectives	171	(6)
7.5 Economic Efficiency of Surveys	177	(5)
References	182	(3)
Chapter 8 Fisheries-Acoustic Surveys	185	(32)
8.1 The Essence of Fisheries-Acoustic Surveys	185	(4)
8.2 Surveys of Fishing Conditions	189	(6)
8.3 Surveys of Commercial Resources	195	(2)
8.4 Ecological Surveys	197	(5)
8.5 Analysis and Application of Survey Results	202	(13)
References	215	(2)
Chapter 9 Passing Observations and Surveys on Commercial Vessels	217	(12)
9.1 The Principles of Estimation of Fish Concentrations	218	(3)
9.2 Surveys of Commercial Resources	221	(1)
9.3 Passing Observations	222	(1)
9.4 Long-Term Passing Observations	223	(2)
9.5 Analysis of Results of Observations	225	(2)
References	227	(2)
Afterword	229	(2)
Author Index	231	(4)
Subject Index	235