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dc.contributor.authorChotiros, Nicholas P.  Concept link
dc.contributor.authorHope, Gaute  Concept link
dc.contributor.authorStorheim, Espen  Concept link
dc.contributor.authorHobaek, Halvor  Concept link
dc.contributor.authorFreitag, Lee E.  Concept link
dc.contributor.authorSagen, Hanne  Concept link
dc.date.accessioned2021-04-06T15:18:59Z
dc.date.issued2021-01-15
dc.identifier.citationChotiros, N. P., Hope, G., Storheim, E., Hobaek, H., Freitag, L., & Sagen, H. (2021). Inversion of surficial sediment thickness from under-ice acoustic transmission measurement. Journal of the Acoustical Society of America, 149(1), 371.en_US
dc.identifier.urihttps://hdl.handle.net/1912/26904
dc.descriptionAuthor Posting. © Acoustical Society of America, 2021. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 149(1), (2021): 371, https://doi.org/10.1121/10.0003328.en_US
dc.description.abstractThe under-ice acoustic transmission experiment of 2013, conducted under ice cover in the Fram Strait, was analyzed for bottom interactions for the purpose of developing a model of the seabed. Using the acoustic signals, as well as data from other sources, including cores, gravimetric, refraction, and seismic surveys, it was deduced that the seabed may be modeled as a thin surficial layer overlaid on a deeper sediment. The modeling was based on the Biot–Stoll model for acoustic propagation in porous sediments, aided by more recent developments that improve parameter estimation and depth dependence due to consolidation. At every stage, elastic and fluid approximations were explored to simplify the model and improve computational efficiency. It was found the surficial layer could be approximated as a fluid, but the deeper sediment required an elastic model. The full Biot–Stoll model, while instrumental in guiding the model construction, was not needed for the final computation. The model could be made to agree with the measurements by adjusting the surficial layer thickness.en_US
dc.description.sponsorshipThe fieldwork was performed under funding from the Research Council of Norway through the UNDER-ICE (Grant No. 226373) project and ENGIE E&P Norway providing additional support. This analysis was supported by the United States Office of Naval Research, Ocean Acoustics Program.en_US
dc.publisherAcoustical Society of Americaen_US
dc.relation.urihttps://doi.org/10.1121/10.0003328
dc.titleInversion of surficial sediment thickness from under-ice acoustic transmission measurementen_US
dc.typeArticleen_US
dc.description.embargo2021-07-15en_US
dc.identifier.doi10.1121/10.0003328
dc.embargo.liftdate2021-07-15


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