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Modelling of the Svalbard fjord Hornsund

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The Arctic Ocean is currently in transition towards a new, warmer state. Understanding the regional variability of oceanographic conditions is important, since they have a direct impact on local ecosystems. This work discusses the implementation of a hydrodynamic model for Hornsund, the southernmost fjord of western Svalbard. Despite its location, Hornsund has a stronger Arctic signature than other Svalbard fjords. The model was validated against available data, and the seasonal mean circulation was obtained from numerical simulations. Two main general circulation regimes have been detected in the fjord. The winter circulation represents a typical closed fjord system, while in summer the fresh water discharge from the catchment area generates a surface layer with a net flow out of Hornsund. Also described are the local hydrographic front and its seasonal variability, as well as the heat and salt content in Hornsund. The integration of salt and heat anomalies provides additional information about the salt flux into the innermost basin of the fjord - Brepollen during the summer. Extensive in situ observations have been collected in Hornsund for the last two decades but our hydrodynamic model is the first ever implemented for this area. While at the moment in situ observations better represent the state of this fjord's environment and the location of measurements, a numerical model, despite its flaws, can provide a more comprehensive image of the entire fjord's physical state. In situ observations and numerical simulations should therefore be regarded as complementary tools, with models enabling a better interpretation and understanding of experimental data.
Czasopismo
Rocznik
Strony
473--495
Opis fizyczny
Bibliogr. 28 poz., mapy, tab., wykr.
Twórcy
autor
  • Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland
  • Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland
autor
  • Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland
autor
  • Norwegian Polar Institute, Tromsø, Norway
autor
  • Institute of Marine Research, Bergen, Norway
Bibliografia
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  • [5] Cottier, F. R., Nilsen, F., Skogseth, R., Tverberg, V., Skarthhamar, J., Svendsen, H., 2010. Arctic fjords: a review of the oceanographic environment and dominant physical processes. Geol. Soc. London, Spec. Publ. 344 (1), 35-50, http://dx.doi.org/10.1144/SP344.4.
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  • [12] Frankowski, M., Zioła-Frankowska, A., 2014. Analysis of labile form of aluminum and heavy metals in bottomsediments from Kongsfjord, Isfjord, Hornsund fjords. Environ. Earth Sci. 71 (3), 1147-1218, http://dx.doi.org/10.1007/s12665-013-2518-5.
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  • [15] Haidvogel, D. B., Arango, H., Budgell, W. P., Cornuelle, B. D., Curchitser, E., Di Lorenzo, E., Fennel, K., Geyer, W. R., Hermann, A. J., Lanerolle, L., Levin, J., McWilliams, J. C., Miller, A. J., Moore, A. M., Powell, T. M., Shchepetkin, A. F., Sherwood, C. R., Signell, R. P., Warner, J. C., Wilkin, J., 2008. Ocean forecasting in terrainfollowing coordinates: formulation and skill assessment of the Regional Ocean Modeling System. J. Comp. Phys. 222 (7), 3595-3624, http://dx.doi.org/10.1016/j.jcp.2007.06.016.
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  • [23] Nilsen, F., Cottier, F., Skogseth, R., Mattsson, S., 2008. Fjord-shelf exchange controlled by ice and brine production: the interannual variation of Atlantic Water in Isfjorden, Svalbard. Cont. Shelf Res. 28 (14), 1838-1853, http://dx.doi.org/10.1016/j.csr.2008.04.015.
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  • [25] Shchepetkin, A. F., McWilliams, J. C., 2009. Correction and commentary for “Ocean forecasting in terrain-following coordinates: formulation and skill assessment of the regional ocean modeling system” by Haidvogel et al. J. Comp. Phys. 228 (24), 8985-9000, http://dx.doi.org/10.1016/j.jcp.2009.09.002.
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Uwagi
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-8c0ebcd3-a620-4d94-a90c-836d9138039a
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