• TABLE OF CONTENTS
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 Front Cover
 Title Page
 Acknowledgement
 Table of Contents
 List of Tables
 List of Figures
 List of symbols
 Abstract
 Introduction
 Literature review
 Design of experiment
 Experimental apparatus, procedure...
 Anaysis and results
 Conclusions and recommendation...
 References






Group Title: UFL/COEL (University of Florida. Coastal and Oceanographic Engineering Laboratory) ; 92/018
Title: The Role of wave and current forcing in the process of barrier island overwash
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Permanent Link: http://ufdc.ufl.edu/UF00079950/00001
 Material Information
Title: The Role of wave and current forcing in the process of barrier island overwash
Series Title: UFLCOEL
Physical Description: xiv, 118 leaves : ill. ; 29 cm.
Language: English
Creator: Pirrello, Mark A., 1967- ( Dissertant )
Thieke, Robert J. ( Thesis advisor )
Dean, Robert G. ( Reviewer )
Mehta, Ashish J. ( Reviewer )
University of Florida -- Coastal and Oceanographic Engineering Dept
Publisher: Coastal & Oceanographic Engineering Dept., University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: 1992
Copyright Date: 1992
 Subjects
Subjects / Keywords: Barrier islands   ( lcsh )
Waves   ( lcsh )
Ocean currents   ( lcsh )
Coastal and Oceanographic Engineering thesis M.E   ( local )
Dissertations, Academic -- Coastal and Oceanographic Engineering -- UF   ( local )
Genre: bibliography   ( marcgt )
non-fiction   ( marcgt )
 Notes
Abstract: With the rapid growth and development of barrier islands, understanding the long-term stability of these islands is an integral part of future coastal planning. The overwash process is the largest influence on the long-term stability of these islands and thus a corresponding understanding is of major importance. A laboratory experiment was undertaken to physically model the wave and current forcing as they pertain to the overwash process. The physical model was subjected to various storm conditions common to the occurrence of the overwash. Combinations of wave height, wave period, and overwash depth were tested in an attempt to isolate the significant parameters. Water surface gradients were also applied to observe their influence on the overwash process. Wave height, current, and bed profile measurements were taken at different locations throughout the tank. In addition, wave height transformation modeling and mean current prediction were performed and compared to the laboratory results in an attempt to model the overwash process through computer simulations. The experimental results demonstrate that the water surface gradient is the mechanism that has the greatest influence in producing “significant” overwash and is most likely responsible for transporting large quantities of sand on to and over barrier islands. In addition, two other conclusions were drawn about the overwash process: 1) the overwash depth plays an important role in determining the overwash velocity and hence the amount of sand deposited on the barrier island. 2) There seems to exist a correlation between the strength of the return flow and bar formation. It was also determined that modeling the wave height transformation during the overwash process is possible if the model is expressly written for the overwash process and not for non-overwashing cases. The method utilized to predict the mean currents during overwash was not able to predict their strength but was able to substantiate the correlation between return flow and bar formation. As a result of overwash, the increased shoreward mass transport and reduced return flow in the water column are able to initiate and sustain a shoreward sediment transport. Finally, it was concluded in all likelihood only “significant” overwash evens after the long-term stability of the barrier islands.
Thesis: Thesis (M.E.)--University of Florida, 1992.
Bibliography: Includes bibliographical references (leaves 114-117).
Statement of Responsibility: by Mark A. Pirrello.
General Note: Typescript.
General Note: Vita.
Funding: This publication is being made available as part of the report series written by the faculty, staff, and students of the Coastal and Oceanographic Program of the Department of Civil and Coastal Engineering.
 Record Information
Bibliographic ID: UF00079950
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: aleph - 001872341
oclc - 29233536
notis - AJU7343

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Table of Contents
    Front Cover
        Front Cover
    Title Page
        Page i
    Acknowledgement
        Page ii
    Table of Contents
        Page iii
        Page iv
        Page v
    List of Tables
        Page vi
        Page vii
        Page viii
    List of Figures
        Page ix
        Page x
        Page xi
    List of symbols
        Page xii
    Abstract
        Page xiii
        Page xiv
    Introduction
        Page 1
        Page 2
        Page 3
        Page 4
        Page 5
        Page 6
        Page 7
        Page 8
        Page 9
        Page 10
    Literature review
        Page 11
        Page 12
        Page 13
        Page 14
        Page 15
        Page 16
        Page 17
        Page 18
        Page 19
        Page 20
    Design of experiment
        Page 21
        Page 22
        Page 23
        Page 24
        Page 25
        Page 26
        Page 27
        Page 28
        Page 29
        Page 30
        Page 31
        Page 32
        Page 33
        Page 34
    Experimental apparatus, procedure and conditions
        Page 35
        Page 36
        Page 37
        Page 38
        Page 39
        Page 40
        Page 41
        Page 42
        Page 43
    Anaysis and results
        Page 44
        Page 45
        Page 46
        Page 47
        Page 48
        Page 49
        Page 50
        Page 51
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        Page 96
        Page 97
        Page 98
        Page 99
        Page 100
        Page 101
        Page 102
        Page 103
    Conclusions and recommendations
        Page 104
        Page 105
        Page 106
        Page 107
        Page 108
        Page 109
        Page 110
        Page 111
        Page 112
        Page 113
    References
        Page 114
        Page 115
        Page 116
        Page 117
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