Program and Agenda

Abstract

ROYAL HAWAIIAN BEACH: REPLENISHMENT AND MONITORING INTERIM REPORT, YEAR 1

In 2012, a beach restoration project was carried out on Royal Hawaiian Beach in Waikiki, Oahu. As part of the project, researchers at the University of Hawaii have been commissioned to monitor and evaluate erosion rates and morphological changes over a period of two years following the initial replenishment. Five beach surveys have been conducted thus far over a period of one year. Cross shore profiles are measured using a Geodimeter total station that tracks a telescoping rod moved across the beach into near shore waters by a swimmer. Survey data confirm the placement of approximately 18,350 m3 of fill on the Royal Hawaiian Beach, with subsequent net volume loss of 4790 m3 or 27%. Width change varies by location, ranging from +1.73 m in the central segment of the beach to -2.86 m at the western most extent of the beach. Berm retreat, typically under conditions of summer swell, has produced net erosion in the eastern and western portions of the project area with net accretion occurring offshore of the western portion of the project area.

ePoster:

Authors

Fletcher, C. H., University of Hawaii at Manoa, USA, fletcher@soest.hawaii.edu

Habel, S., University of Hawaii at Manoa, USA, skey@hawaii.edu

Barbee, M., University of Hawaii at Manoa, USA, mbarbee@hawaii.edu

Details

Poster presentation

Session #:047
Date: 2/26/2014
Time: 16:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: Yes

PosterID: 1125