Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/7693
Title: Laboratory study of wind effect on runup over fringing reefs, Report 1: Data report
Authors: Demirbilek, Zeki
Nwogu, Okey G.
Ward, Donald L. (Donald Leslie), 1943-
Keywords: Fringing reefs
Reflection and spectral analyses
Surge and wave modeling
Time-series data
Wave setup and runup
Wind effects
Coastal Inlets Research Program (U.S.)
Surge and Wave Island Modeling Studies Program (U.S.)
Publisher: Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (Engineer Research and Development Center (U.S.)); no.ERDC/CHL TR-07-4 rept.1
Abstract: The report describes experimental data obtained from a wind-wave flume study conducted August-September 2006 at the University of Michigan in Ann Arbor, MI. The study objectives were two-fold: to quantify wind effects on wave runup on fringing reefs of the Pacific Island of Guam and to obtain detailed wave data along a complex reef system consisting of steep slopes and shallow areas for validating wave breaking, dissipation, wave setup and runup capabilities of a Boussinesq-type wave model. An idealized 1:64 model of a two- dimensional fringing reef, representative of the reef systems along the southeast coast of island of Guam, was built in the flume. The reef cross-sectional profile consisted of a beach, a flat and wide reef section, and a reef face with composite slope. The reef profile was built from a relatively smooth and impervious plastic material (polyvinyl chloride). The wind generator and wave-maker mechanisms were located at opposite ends of the test flume. Eleven probes (gauges) collected time series surface elevation and wind speed data. Tests were performed without wind (waves-only), with wind-only, and with both waves and wind together. Data obtained in this study will be used in the calibration of numerical models to estimate wave setup and runup affecting the flooding of Pacific islands. This data report describes the experiment and data. Subsequent reports are expected to address the analyses and use of data and numerical modeling studies. General features of the experiment are summarized in the report, including description of test facility, instrumentation, test conditions, and preliminary results. Raw data are provided on the Coastal Inlets Research Program (CIRP) Web site (http://cirp.wes.army.mil/cirp/cirp.html). The analyzed data are presented in Appendix A of this report for each test at nine wave probes, runup gauge and hot-wire anemometer. Values of measured significant wave height, peak wave period, mean water level, and wind speed are provided. The maximum runup, Rmax, is calculated as maximum vertical excursion of the water level at the shoreline (runup gauge) relative to the still-water level. The runup levels exceeded by 2 percent (R2%) and 10 percent (R10%) of the runup peaks are also tabulated.
Description: Technical Report
Gov't Doc #: ERDC/CHL TR-07-4 rept.1
Rights: Approved for public release; distribution is unlimited
URI: http://hdl.handle.net/11681/7693
Appears in Collections:Technical Report
Technical Report

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