1. ERDC Knowledge Core
  2. Engineer Research and Development Center (ERDC)
  3. Coastal and Hydraulics Laboratory (CHL) - (before 9/1981 - present)
  4. Publication
  5. Technical Report
Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/7738
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dc.contributor.authorDemirbilek, Zekien_US
dc.contributor.authorLin, Lihwaen_US
dc.contributor.authorKing, David B. (David Byron)en_US
dc.contributor.authorWard, Donald L. (Donald Leslie), 1943-en_US
dc.creatorCoastal and Hydraulics Laboratory (U.S.)en_US
dc.creatorCoastal Inlets Research Program (U.S.)en_US
dc.date.accessioned2016-05-06T14:34:18Zen_US
dc.date.available2016-05-06T14:34:18Zen_US
dc.date.issued2015-03en_US
dc.identifier.govdocERDC/CHL TR-14-8en_US
dc.identifier.urihttp://hdl.handle.net/11681/7738en_US
dc.descriptionTechnical Reporten_US
dc.description.abstractThis report documents numerical wave and flow modeling for evaluation of the jetties on a shallow draft navigation channel on Tangier Island, VA, located in Chesapeake Bay. Because it is heavily used by the local fishing fleet, the U.S. Army Engineer District, Norfolk (CENAO) maintains the Tangier Island boat canal. CENAO is considering the construction of structures to protect the western entrance of the channel and reduce the wave energy in the lee of the structures, and asked the U.S. Army Engineer Research and Development Center (ERDC), Coastal and Hydraulics Laboratory (CHL) to perform a numerical modeling study to investigate how waves and hydrodynamics would be affected by structures, to identify the optimal location for the structures, and to develop a preliminary structure design. The primary goal of the study was to develop a quantitative estimate of waves and wave reduction in the canal for a relative comparison of alternatives investigated and for the preliminary structural design calculations. CMS-Wave, a spectral wave model, was used to estimate waves in Chesapeake Bay and propagate waves into the entrance channel and boat canal. The numerical modeling results indicated that maximum wave energy reduction inside the canal was obtained using a dog-leg jetty connecting to the north shoreline and a spur on the south shoreline.en_US
dc.description.sponsorshipUnited States. Army. Corps of Engineers. Norfolk Districten_US
dc.description.sponsorshipCoastal Inlets Research Program (U.S.)en_US
dc.description.tableofcontentsAbstract.................................................................................................................................... ii Figures and Tables...................................................................................................................v Preface.................................................................................................................................... ix Unit Conversion Factors......................................................................................................... x 1 Study Needs and Plan......................................................................................................1 1.1 Background........................................................................................................1 1.2 Objectives...........................................................................................................3 1.3 Approach ............................................................................................................3 1.4 Data....................................................................................................................5 1.5 Tasks ..................................................................................................................5 1.5.1 Task 1. Metocean forcing (winds, waves, tides, currents, water levels)................. 6 1.5.2 Task 2. Investigation of jetty location and geometry. .............................................. 6 1.5.3 Task 3. Modeling channel hydrodynamics ............................................................... 6 1.5.4 Task 4. Structure design............................................................................................ 6 1.5.5 Task 5. Technical report ............................................................................................ 7 1.6 Report layout......................................................................................................7 2 Numerical Modeling for Wave-Energy Reduction in the Tangier Island Boat Canal..................................................................................................................................8 2.1 Purpose ..............................................................................................................8 2.2 Numerical models .............................................................................................8 2.3 Model domain, bathymetry, and forcing...........................................................9 2.4 Model grids ......................................................................................................15 2.5 Existing channel and structural alternatives ................................................ 18 2.6 Forcing conditions .......................................................................................... 23 2.7 Save stations ...................................................................................................27 2.8 Idealized wind and water level simulations (waves without current) .......... 29 2.9 Relative comparison of alternatives.............................................................. 30 2.10 Hurricane Isabel simulations (waves with current)..................................47 2.11 Estimates for structure design ................................................................. 48 2.12 Single-parameter representative wave-reduction rating......................... 54 2.13 Channel sedimentation issues................................................................. 55 3 Structural Design Calculations ....................................................................................60 3.1 Selection of design wave and water level ..................................................... 60 3.2 Stability equations.......................................................................................... 60 3.2.1 Stable seaside armor size ........................................................................................60 3.2.2 Stable leeside armor stone ......................................................................................63 3.3 Design structure ............................................................................................. 66 3.3.1 Assumptions..............................................................................................................66 3.3.2 Calculations............................................................................................................... 67 3.3.3 Analysis...................................................................................................................... 71 3.4 Low-crested jetty..............................................................................................74 3.5 Tangier Island revetment................................................................................ 79 3.6 Jetty response with sea level rise.................................................................. 80 3.7 Local subsidence............................................................................................ 82 3.8 Site visit July 2013 ......................................................................................... 85 4 Conclusions ....................................................................................................................88 References.............................................................................................................................92 Appendix A: Description of CMS........................................................................................94 Appendix B: Datums ............................................................................................................97 Report Documentation Pageen_US
dc.format.extent110 pages/18.51 Mben_US
dc.format.mediumPDFen_US
dc.language.isoen_USen_US
dc.publisherEngineer Research and Development Center (U.S.)en_US
dc.relationhttp://acwc.sdp.sirsi.net/client/en_US/search/asset/1042086en_US
dc.relation.ispartofseriesTechnical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CHL TR-14-8en_US
dc.rightsApproved for public release; distribution is unlimiteden_US
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobaten_US
dc.subjectNumerical modelingen_US
dc.subjectNumerical modelsen_US
dc.subjectMathematical modelingen_US
dc.subjectMathematical modelsen_US
dc.subjectEvaluationen_US
dc.subjectCoastal structuresen_US
dc.subjectJettyen_US
dc.subjectDesignen_US
dc.subjectHydrodynamicsen_US
dc.subjectWave reductionen_US
dc.subjectTangier Island (Va.)en_US
dc.subjectCoastal Inlets Research Program (U.S.)en_US
dc.titleModeling study for Tangier Island jetties, Tangier Island, Virginiaen_US
dc.typeReporten_US
Appears in Collections:Technical Report
Technical Report

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