Cyclone wave inundation models for Apataki, Arutua, Kauehi, Manihi and Rangiroa atolls, French Polynesia Hervé Damlamian ... [et al.]

By: Contributor(s): Material type: TextTextSeries: SPC SOPAC Technical report ; PR176Publication details: Suva, Fiji SPC Applied Geoscience and Technology Division (SOPAC) 2013Description: 60 p. col. ill., photographs, maps, graphs 30 cmSubject(s): DDC classification:
  • 551.46309962
Online resources: Summary: "This study is a component of a larger project aimed at assessing the storm surge hazard in the Tuamotu Archipelago of French Polynesia and at providing information that would aid the inclusion of this hazard into future development plans and risk prevention solutions. This study used forcing conditions generated by a 12 m wave impacting on the atolls of Apataki, Arutua, Kauehi, Manihi and Rangiroa at high tide. The inundation was computed using the XBeach hydrodynamic model. Such a wave correlates to about a 50 year return interval that has a 2 per cent chance of occurring in any one year. Prior to applying the above input parameters, the XBeach model was initially set up and calibrated based on baseline and observational data collected in the field from June to December 2011. This report covers the results of the two- dimensional cyclone wave model of the five targeted sites set up under this study. A companion report of the fieldwork component, including details on the oceanographic data collected and used in the calibrations, is available, as is a report on the bathymetry survey for Rangiroa. Model results were mapped into four risk categories of weak, intermediate, strong and very strong. All modelled sites that were adjacent to the ocean showed very strong risk to extreme cyclone-generated significant wave heights of 12 m. Lagoon sides that were mapped as having intermediate to weak levels of risk should be considered with caution, because inundation could also come from the lagoon side through storm surge, which was not investigated in this study. We found that the model results to be very sensitive to wave direction. It is noted that the effects of variable incident wave directions that deviate from the perpendicular could result in higher risk in some areas, especially near a pass or hoa."
Item type: Technical Report
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Holdings
Current library Call number Status Date due Barcode
SPC Special Collections SPC JOU SOPAC Technical Report Available 46286
SOPAC SPC publication AP 102 SOPAC PR176 2013 Available 90337
SOPAC SPC publication AP 102 SOPAC PR176 2013 Available 90293
SOPAC AP 102 SOPAC PR176 2013 Available 90302

Également en français : "Modélisation des submersions marines d'origine cyclonique dans les atolls d'Apataki, Arutua, Kauehi, Manihi et Rangiroa, en Polynésie française"

Includes bibliographical references (p. 51)

"This study is a component of a larger project aimed at assessing the storm surge hazard in the Tuamotu Archipelago of French Polynesia and at providing information that would aid the inclusion of this hazard into future development plans and risk prevention solutions. This study used forcing conditions generated by a 12 m wave impacting on the atolls of Apataki, Arutua, Kauehi, Manihi and Rangiroa at high tide. The inundation was computed using the XBeach hydrodynamic model. Such a wave correlates to about a 50 year return interval that has a 2 per cent chance of occurring in any one year. Prior to applying the above input parameters, the XBeach model was initially set up and calibrated based on baseline and observational data collected in the field from June to December 2011. This report covers the results of the two- dimensional cyclone wave model of the five targeted sites set up under this study. A companion report of the fieldwork component, including details on the oceanographic data collected and used in the calibrations, is available, as is a report on the bathymetry survey for Rangiroa. Model results were mapped into four risk categories of weak, intermediate, strong and very strong. All modelled sites that were adjacent to the ocean showed very strong risk to extreme cyclone-generated significant wave heights of 12 m. Lagoon sides that were mapped as having intermediate to weak levels of risk should be considered with caution, because inundation could also come from the lagoon side through storm surge, which was not investigated in this study. We found that the model results to be very sensitive to wave direction. It is noted that the effects of variable incident wave directions that deviate from the perpendicular could result in higher risk in some areas, especially near a pass or hoa."