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    Wave modeling of a reef-sheltered coastal zone in the Red Sea

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    Name:
    Langodan_et_al_2020.pdf
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    6.598Mb
    Format:
    PDF
    Description:
    Accepted manuscript
    Embargo End Date:
    2022-05-01
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    Type
    Article
    Authors
    Langodan, Sabique cc
    Antony, Charls
    PR, Shanas
    Dasari, Hari Prasad cc
    Abualnaja, Yasser
    Knio, Omar cc
    Hoteit, Ibrahim cc
    KAUST Department
    Applied Mathematics and Computational Science Program
    Beacon Development Company
    Biological and Environmental Sciences and Engineering (BESE) Division
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Earth Fluid Modeling and Prediction Group
    Earth Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Red Sea Research Center (RSRC)
    KAUST Grant Number
    REP/1/3268-01-01
    RGC/3/1612-01-01
    Date
    2020-05-01
    Online Publication Date
    2020-05-01
    Print Publication Date
    2020-07
    Embargo End Date
    2022-05-01
    Submitted Date
    2019-07-11
    Permanent link to this record
    http://hdl.handle.net/10754/662777
    
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    Abstract
    The coastal areas of the Red Sea are characterized by shallow banks of fringing and barrier reefs that provide protection against coastal hazards and erosion by dissipating wave energy. This study investigates the wave climate and extremes of a reef-protected coastal zone in the Red Sea using a high-resolution coupled wave and circulation model, ADCIRC + SWAN, configured on an unstructured grid forced with the meteorological fields from high-resolution regional atmospheric model. Our simulations suggest that the relatively narrow offshore reefs with steep fore-reef slopes dissipate 40–50% of the wave energy propagating towards the shoreline, and this is more pronounced during extremes. The impact of the coupling on determining the wave climate is negligible, but is significant for storms with ~10 cm higher significant wave height (Hs) during the observed period. The back-reef wave climatology computed from 30-year model simulations shows that the mean Hs distribution is uniform throughout the year, and extremes occur more often from February to May. Different return levels of Hs in the sheltered areas are estimated using extreme value analysis. Our results emphasize that preserving the complex offshore reefs is crucial for mitigating the coastal hazards of high-energy waves which are projected to increase with climate change.
    Citation
    Langodan, S., Antony, C., PR, S., Dasari, H. P., Abualnaja, Y., Knio, O., & Hoteit, I. (2020). Wave modeling of a reef-sheltered coastal zone in the Red Sea. Ocean Engineering, 207, 107378. doi:10.1016/j.oceaneng.2020.107378
    Sponsors
    This research was supported by funds from Office of Sponsored research (ORS) at King Abdulla University of Science and Technology (KAUST) under the Virtual Red Sea Initiative (Grant # REP/1/3268-01-01), the Saudi General Commission of Survey (GCS) under Project # RGC/3/1612-01-01, and King Abdullah Economic City (KAEC) under Project # RC/3/3237-01-01. It also made use of the Supercomputing Laboratory and computer clusters at KAUST.
    Publisher
    Elsevier BV
    Journal
    Ocean Engineering
    DOI
    10.1016/j.oceaneng.2020.107378
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S002980182030408X
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.oceaneng.2020.107378
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC); Applied Mathematics and Computational Science Program; Physical Science and Engineering (PSE) Division; Earth Science and Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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