Stability of Tidal Inlets

Stability of Tidal Inlets

1st Edition - January 1, 1978

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  • Author: P. Bruun
  • eBook ISBN: 9780444598240

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Description

Developments in Geotechnical Engineering, 23: Stability of Tidal Inlets: Theory and Engineering focuses on all aspects related to tidal inlets on littoral drift shores where freshwater flow is small or non-existing. The selection first tackles the development and configuration of tidal inlets and inlet hydraulics. Discussions focus on flow dynamics and nearshore transport, combinations of waves and currents, sediment transport and storage in the tidal entrance, offsets of tidal inlets, natural inlet regimen, migration of inlets, and origin of tidal inlets. The manuscript then examines sediment transport in tidal inlets, stability of tidal inlets on littoral drift shores, and design and improvements of coastal inlets. Topics cover ocean entrance, overall stability condition, hydraulic and sedimentary principles, non-scouring channels, transport of sediments in wave agitated waters, and sediment transport by combined wave and current action. The publication explores improvements by structures, including natural bypassing, types of improvement, and bypassing by structures and bypassing plants or arrangements. The selection is a valuable source of data for researchers interested in the stability of tidal inlets.

Table of Contents


  • Preface

    Main Symbols

    Abbreviations Used in References

    Introduction

    1. Development of Tidal Inlets

    1.1 Origin of Tidal Inlets

    1.2 Natural Inlet Regimen Migration Of Inlets

    1.3 How and Why Inlets Shoal

    2. Configuration of Tidal Inlets

    2.1 General

    2.2 Sediment Transport and Storage in the Tidal Entrance

    2.3 Offsets of Tidal Inlets

    3. Inlet Hydraulics

    3.1 Flow Dynamics and Nearshore Transport

    3.1.1 Tidal Flow Characteristics

    3.1.2 Flow Resistance at the Channel Bed

    3.1.3 Tidal Prism

    3.1.4 Mixing and Mass Transport Near Inlets

    3.1.5 Acknowledgement and References

    3.2 Combinations of Waves and Currents

    3.2.1 Introduction

    3.2.2 The Kinematics

    3.2.3 The Dynamics

    3.2.4 Current Depth Refraction

    3.2.5 Two-Dimensional Flow

    3.2.6 Three-Dimensional Flow

    3.2.7 The Influence of the Current Profile

    4. Sediment Transport in Tidal Inlets

    4.1 General

    4.2 Sediment Transport in Gorge and Bay Channels

    4.2.1 Start of Movement

    4.2.2 Bed Load Transport

    4.2.3 Suspension Load Transport

    4.3 The Transport of Sediments in Wave Agitated Waters

    4.4 Sediment Transport by Combined Wave and Current Action

    5. Stability of Tidal Inlets on Littoral Drift Shores

    5.1 Definition of Stability

    5.2 Overall Considerations

    5.3 The Ω/Mtotal Criteria for Overall Stability

    5.3.1 Justification for the Ω/Mtotal

    5.3.2 Conversion of Ω/Mtotal to A/Mtotal

    5.3.3 Influence of Jetties on the Stability

    5.3.4 Other Approaches

    5.3.5 Seasonal Changes of Ω/Mtotal

    5.4 The Stability Of The Gorge Channel

    5.4.1 The Ω/Mgorge Criteria

    5.4.2 The Vman max Criteria

    5.5 The Ocean Entrance

    5.5.1 The Problem

    5.5.2 Factors Determining the Stability of the Ocean Entrance

    5.5.3 Rational Approach to Entrance Stability

    5.6 Non-Scouring Channels

    6. Design and Improvement of Coastal Inlets

    6.1 Hydraulic and Sedimentary Principles

    6.2 Design Principles

    6.3 Basic Design Parameters

    6.4 Overall Stability Conditions

    6.4.1 Use of Ω/Mgorge

    6.4.2 Navigational Requirements

    6.5 The Gorge

    6.6 The Ocean Entrance

    6.7 The Intermediate Section

    6.8 The Bay Channel

    6.9 An Example on Inlet Behavior (Appendix 1)

    7. Improvements by Dredging of Channels And Traps

    8. Improvements by Structures

    8.1 Types of Improvement

    8.1.1 Jetties

    8.1.2 Hydraulic Aspects of Jetty Protection

    8.1.3 Bypassing of dredged Material, Traps and Structures with Built-In Bypassing Arrangements

    8.2 Natural Bypassing

    8.2.1 General

    8.2.2 Depth Over the Ocean Bar

    8.3 Bypassing by Structures and Bypassing Plants or Arrangements

    9. Which Kind of Research is Needed

    Appendix "Performance of a Jetty-Weir Inlet Improvement Plan"

    Index

Product details

  • Language: English
  • Copyright: © Elsevier Science 1978
  • Published: January 1, 1978
  • Imprint: Elsevier Science
  • eBook ISBN: 9780444598240

About the Author

P. Bruun

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