Accession Number : ADA471044


Title :   Laboratory Study of Wind Effect on Runup over Fringing Reefs. Report 1. Data Report


Descriptive Note : Technical rept.


Corporate Author : ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB


Personal Author(s) : Demirbilek, Zeki ; Nwogu, Okey G ; Ward, Donald L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a471044.pdf


Report Date : Jul 2007


Pagination or Media Count : 83


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 wavemaker mechanisms were located at opposite ends of the test 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 wavemaker 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.


Descriptors :   *WIND , *WAVES , *REEFS , MATHEMATICAL MODELS , EXPERIMENTAL DATA , METEOROLOGICAL DATA , WIND VELOCITY , ELEVATION , POLYVINYL CHLORIDE , GUAM , PACIFIC OCEAN ISLANDS , SHALLOW DEPTH , TEST FACILITIES , FLOODING , CALIBRATION , CROSS SECTIONS , TIME SERIES ANALYSIS , TWO DIMENSIONAL


Subject Categories : Meteorology
      Physical and Dynamic Oceanography
      Operations Research
      Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE