Tomographic inversions from the Fram Strait 2008-9 experiment

TitleTomographic inversions from the Fram Strait 2008-9 experiment
Publication TypeConference Proceedings
Year of Publication2010
AuthorsSkarsoulis, E, Piperakis, G, Kalogerakis, M, Sagen, H, Haugen, SA, Beszczynska-Möller, A, Worcester, PF
Refereed DesignationUnknown
Conference NameEuropean Conference on Underwater Acoustics (ECUA)
PublisherInstitute of Acoustics
Conference Location and DateIstanbul, July 2010

The Fram Strait is the main passage through which mass and heat exchange between the Atlantic and Arctic Ocean takes place. A tomography experiment was conducted from September 2008 to August 2009 in the eastern Fram Strait in the framework of the DAMOCLES EU/FP6 project. The experiment involved an acoustic source west of Spitzbergen and a vertical receiving array in the middle of the strait. The one-year long series of travel-time data from the vertical receiving array are analysed to recover temperature variations along the 130- km section over the duration of the experiment. The temperature distribution is parameterized in terms of empirical orthogonal functions (EOFs) based on historical data. A Markov Chain Monte Carlo (MCMC) inversion scheme is used relying on the matched-peak approach, seeking to maximize the agreement between theoretical and measured travel times.

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