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  • Coastal Processes within a Coral Reef Lagoon System: Erakor Lagoon, Efate Island, Vanuatu

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    Author(s)
    Faivre, Gaëlle
    Vieira da Silva, Guilherme
    Aimbie, Jim
    Ware, Daniel
    Tomlinson, Rodger
    Mackey, Brendan
    Zhang, Hong
    Griffith University Author(s)
    Vieira da Silva, Guilherme
    Faivre, Gaelle S.
    Ware, Dan
    Tomlinson, Rodger B.
    Mackey, Brendan
    Zhang, Hong
    Year published
    2020
    Metadata
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    Abstract
    Small Island Developing States (SIDS) in the South Pacific are highly vulnerable to climate change and development pressure due to their small size, isolation and exposure to natural hazards. Much of the Pacific SIDS population reside within the coastal zone as does the majority of critical infrastructure where resilience is challenged by exposure to natural hazards including inundation and erosion, and impacts from cyclones and tsunamis,. During extreme events, wave energy is a significant damage vector whose impact on populations and infrastructure is mediated by the presence and structural characteristics of adjacent coral ...
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    Small Island Developing States (SIDS) in the South Pacific are highly vulnerable to climate change and development pressure due to their small size, isolation and exposure to natural hazards. Much of the Pacific SIDS population reside within the coastal zone as does the majority of critical infrastructure where resilience is challenged by exposure to natural hazards including inundation and erosion, and impacts from cyclones and tsunamis,. During extreme events, wave energy is a significant damage vector whose impact on populations and infrastructure is mediated by the presence and structural characteristics of adjacent coral reefs. Understanding the role of the structural characteristics of reefs in the dissipation of wave energy is critical to planning climate change resilience for SIDS given climate change will alter water levels, waves climates and the condition of coral reefs. The aims of this paper are to understand (1) the wave dissipation over a coral reef and hydrodynamic circulation within a coral reef lagoon in Erakor lagoon, Port Vila the capital of Vanuatu, and (2) the impact of sea level rise on the wave energy, wave runup and impacts to the shoreline. The information from this assessment can help inform coastal adaptation planning in response to climate change and rising sea levels. The approach is based on using field data to calibrate a numerical model of coastal processes. A wave buoy and five pressure sensors were deployed to measure wave dissipation over the Erakor lagoon's reef and current meters used in the lagoon to measure circulation and residential time. Data processing shows the importance of the reef geomorphology and water levels on wave dissipation.
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    Journal Title
    Journal of Coastal Research
    Volume
    95
    Issue
    sp1
    DOI
    https://doi.org/10.2112/si95-276.1
    Copyright Statement
    © 2020 CERF. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Civil Engineering
    Earth Sciences
    Engineering
    Science & Technology
    Life Sciences & Biomedicine
    Physical Sciences
    Environmental Sciences
    Geography, Physical
    Publication URI
    http://hdl.handle.net/10072/397570
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    • Journal articles

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