Modeled Impacts of Wave Extremes and Sea Level Rise at Puʻuhonua o Hōnaunau National Historical Park, HI: a Probabilistic Analysis
Date
2024
Authors
Contributor
Advisor
Department
Instructor
Depositor
Speaker
Researcher
Consultant
Interviewer
Narrator
Transcriber
Annotator
Journal Title
Journal ISSN
Volume Title
Publisher
Volume
Number/Issue
Starting Page
Ending Page
Alternative Title
Abstract
Damaging waves have previously impacted Puʻuhonua o Hōnaunau National HistoricalPark, HI, a site of immense cultural and historical significance. The ongoing threat of sea level
rise has brought forth concerns among park staff and stakeholders regarding the longevity of
the park and specific areas of importance, especially during times of increased wave activity.
This study investigates the combined impacts of sea level rise and extreme wave events at
the park. In-situ observations of water level data are collected in coastal waters surrounding
the park; however, the in-situ observations did not effectively validate the wave model. The
water level data are nevertheless used to demonstrate the wave transformation phenomenon.
An extreme value analysis is performed on a hindcast dataset using the Peaks Over Threshold
method wherein a number of extreme events are identified. Using a phase-resolving numerical
model, SWASH, coupled with high-resolution topobathymetric data, coastal inundation is
simulated under two sea level rise scenarios: 0.3 m and 1 m. Simulations are also run over
three extreme wave return periods used by the extreme value analysis: 1 year, 10 years,
and 50 years. The SWASH model analyses show that sea level rise amplifies the effects of
wave-driven flooding, threatening low-lying cultural assets and natural features, such as Hale
o Keawe and the Heleipālala anchialine ponds. Effective measures to mitigate the impact of
sea level rise and extreme waves on the park must be explored in a timely manner.
Description
Keywords
Physical oceanography
Citation
Extent
75 pages
Format
Geographic Location
Time Period
Related To
Related To (URI)
Table of Contents
Rights
All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Rights Holder
Local Contexts
Collections
Email libraryada-l@lists.hawaii.edu if you need this content in ADA-compliant format.