Change in Shoreline Position for Two Consecutive Years Using LIDAR Along the Outer Banks, North Carolina

<p>The signal of shoreline change for the Outer Banks, North Carolina is non-stationary. A baseline, west of the first line of dunes, is created for each 5 km section and shore-perpendicular profiles constructed every 20 meters in the alongshore direction. The profiles are obtained from two light detection and ranging (LIDAR) surveys performed in June 22, 2006 and July 7 and 8, 2007.</p><p>For five selected sections of coast, Fourier analysis of the shoreline change signal indicates the signal is self-affine i.e. the mean is not stationary, but changes with position along the signal (Malumud and Turcotte, 1999) with a scaling exponent that varies from 1.2 to 2.1. Four of the five selected sections of coast, Wavelet analysis of the shoreline change signal indicate the signal is self-affine with a scaling exponent that varies from 1.4 to 2.3. </p><p>The power scaling exponents extend over three orders of magnitude in length from 0.1 to 10 km. </p><p>The values of the power scaling exponent (greater than 1) indicate that the signal has no characteristic length scale and is non-stationary as the power scaling increases, low-frequency (high period) contributions dominate over high-frequency (low period) contributions. The range in power scaling exponents indicates that abrupt changes in shoreline position are less common than gradual changes over long distances (Malamud and Turcotte, 1999).</p>

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Earth and Environmental Sciences

Grantor dc:publisher

Wright State University

Year dc:date

2012

Author dc:creator

• Taylor, Rachel Marie

Contributors dc:contributor

• Barton, Christopher
• Tebbens, Sarah

• Geophysics
• LIDAR
• coastline
• self-affine

Statement dc:rights

• unrestricted
• This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.

Language dc:language

English

Repository record dc:identifier

http://rave.ohiolink.edu/etdc/view?acc_num=wright1357263024

OAI identifier oai:identifier

oai:etd.ohiolink.edu:wright1357263024