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درباره این کتاب:
There is
still so much about the oceans that
scientists do not know, and exploring
the continental shelves of the world is
a huge part of finding out more about
these underwater environments. Further
to that, it is extremely important that,
while scientists and engineers explore
and monitor the continental shelf, no
damage is done to these precious
environments. That is the needle that
this study intends to thread, giving
scientists and engineers a better method
and processes for exploring these
underwater mysteries, while protecting
the environment and wildlife thriving
beneath.
Written
by a proven scientist in this area, this
book is dedicated to the unique
developments of hydroacoustical
equipment to monitor the coastal shelf.
The results of the original experimental
sonar studies with application of the
parametric antenna are presented. The
book presents a survey of the modern
methods and technical monitoring
facilities of the coastal aqueous
environment. The basic characteristics
of the parametric antennas are given
considering propagation of the acoustic
waves in the environments with
dispersion and acoustical absorption.
The author and his colleagues consider
the questions of formation of the
parametric antenna field in
layered-heterogeneous media and the
peculiarities of sounding of the
interfaces and bottom sediments.
Ecological monitoring methods of the
basic parameters of quality and
condition of the aqueous environment are
analyzed. The peculiarities of
diagnostics of the underwater
engineering constructions when
monitoring the offshore strips are
described.
For both
veteran engineers and students in the
field alike, this breakthrough study is
a must-have for any scientific library
concerned with studying the oceans and
especially the continental shelf.
■ در این کتاب چه
میخوانیم:
Content:
Abstract xiii Preface xv 1 Monitoring of
Aqueous Environment of the Continental
Shelf: The Current State 1Iftikhar B.
Abbasov 1.1 Introduction 1 1.2 General
Monitoring Tasks 3 1.3 Remote Monitoring
with the Help of Satellites 4 1.4
Monitoring of Underwater Seismic Activity
6 1.5 Fish Stock Monitoring 6 1.6
Monitoring in the Marine Archeology 7 1.7
The Use of Underwater Vehicles for
Geological Exploration 7 1.8 Use of
Underwater Vehicles for Monitoring of
Ecosystems 8 1.9 Modern Underwater
Vehicles for Monitoring of Ecosystems 11
1.10 Hydro Acoustical Shelf Monitoring
Systems 18 1.11 Conclusion 22 References
22 2 Parametric Antennas in the Mediums
with Hydrophysical Inhomogeneities: Theory
and Experiment 25Igor . Kirichenko 2.1
Introduction 25 2.2 Assignment of the Task
of Theoretical and Experiment Research of
the Parametric Antennas in the Mediums
with Hydro Physical Inhomogeneities 27 2.3
Methods of Solution of KhZK Equations
Considering Hydrophysical Inhomogeneities
31 2.4 Measurement Procedure of the Field
Characteristics of the Parametric Antenna
and Backward Volume Scattering at Models
of the Hydrophysical Inhomogeneities 34
2.5 The Results of Experimental
Measurements of Characteristics of the
Parametric Antenna Field and Backward
Volume Scattering at Models of
Hydrophysical Inhomogeneities 41 2.6
Discussion of the Results of the
Theoretical and Experimental Research 54
2.7 Conclusion 54 References 55 3 Research
of the Phase Characteristics of
Parametrical Radiators for Measuring
Purposes 57Vladimir V. Grivtsov 3.1
Introduction 57 3.2 Measurement Procedure
of the Phase Structure of the Acoustic
Field 58 3.3 Phase Portrait of the Field
of the Parametric Antenna with Planar
Transformer of Pumping 62 3.4 Phase
Distributions in the Spherically Diverging
Waves of the Parametrical Antenna 68 3.5
Parametrical Radiator Use for Hydro
Acoustical Measurements in the Limited
Size Tanks 72 3.6 Conclusion 79 References
79 4 Influence of Layer-Discrete Areas on
the Formation of the Direction Acoustic
Parametric Antenna at the Diagnostic of
the Water Environment 81Nicolai P. Zagrai
4.1 Limitations of the Nonlinear
Interaction Region 82 4.1.1 Statement of
the Problem 82 4.1.2 Limitation of the
Nonlinear Interaction Region by the
General Surface of Round Piston
Transformer of the Acoustic Parametric
Antenna 84 4.1.3 Limitation of the
Nonlinear Interaction Region by the
General Surface of Rectangular Piston
Transformer of the Acoustic Parametric
Antenna 86 4.1.4 Limitation by the
Incident Flat Surface 87 4.1.5 Limitation
with Curved Surfaces 89 4.1.6 The Field of
Acoustic Parametric Antenna with
Layered-Non-Homogeneous Nonlinear
Interaction Region 92 4.2 Nonlinear
Interaction Region as a System of the
Normal (Orthogonal) Discrete
Plane-Parallel Layers. Statement of the
Problem 94 4.3 Experimental Studies of the
Field of Acoustic Parametric Antenna at
Presence of the Layer, Plate and System of
Layers in the Nonlinear Interaction Region
102 4.3.1 Liquid Layer 102 4.3.2 Plate 105
4.3.3 Incident Plate 109 4.3.4 System of
Plates 114 4.4 Layers with Diffused
Boundaries in the Nonlinear Interaction
Region 118 4.4.1 On the Formation of the
Field of an Acoustic Parametric Antenna in
a Periodic Structure with Diffuse
Boundaries 118 4.4.2 Application of the
Immersion Method to Consider a System of
Layers with Blurred Boundaries 119 4.5
Conclusion 123 References 125 5
Experimental Research of Penetration of
the Acoustic Inhomogeneous Plane Waves
from Water into Air 129Alexander P.
Voloshchenko and Sergey P. Tarasov 5.1
Introduction 129 5.2 Statement of the
Problem 132 5.3 Method of Investigation
143 5.4 Results of the Study 147 5.5
Discussion 157 5.6 Conclusion 164
References 164 6 Study of Nonlinear
Interaction of Acoustic Waves Driven by
Parametric Radiating Antenna During
Sounding of Bottom Sediments 167Yuri V.
Dushenin and Mikhail S. Rybachek 6.1
Introduction 167 6.2 Statement of the
Problem 173 6.3 Research Technique of the
Basic PA Characteristics in BS at Normal
Incidence to the Interface with Subsequent
Excitation in BS of Longitudinal Waves 173
6.4 Results of Research of the Basic PA
Characteristics in BS at Normal Incidence
to the Interface with Subsequent
Excitation of P-Waves in BS 184 6.5
Research Technique of the Basic PA
Characteristics in BS at Incidence to the
Interface at Angles Close to Critical,
with Subsequent Excitation in BS of Shear
Waves 191 6.6 The Results of Research of
the Basic PA Characteristics in BS, at
Incidence to the Interface at Angles,
Close to Critical, with Subsequent
Excitation of Shear Waves in BS 198 6.7
Discussion 204 6.8 Conclusion 206
References 207 7 The Underwater Ultrasonic
Equipment with the Nonlinear Acoustics
Effect's Application 211Vadim Yu.
Voloshchenko and Elizaveta V. Voloshchenko
7.1 Introduction 212 7.2 The Navigation
System with Short Based Length 214 7.3 An
Impulse Method for Broadband Acoustical
Measurements 219 7.4 The Nonlinear
Hydroacoustic Wavegraph 223 7.5 Conclusion
231 References 232 8 The Research of
Waters Eutrophication of the Gulf of
Taganrog of the Sea of Azov For Ecological
Monitoring Purposes 235Alena Yu. Zhidkova,
Natalia V. Gusakova and Viktor V. Petrov
8.1 Introduction 236 8.2 Problem Statement
237 8.3 Methods 239 8.4 Results 243 8.5
Discussion 261 8.6 Conclusion 262
References 262 9 The Application Features
of Sonar Systems for Control of Underwater
Engineering Structures and Monitoring Area
267 9.1 Introduction 267 9.2 Procedure of
Detailed Investigation of the Objects with
the Help of Side Scan Sonar 270
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