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Hydrodynamic modelling of Port Foster, Deception Island, Antarctica

  • Daniel Figueiredo (a1), Aires Dos Santos (a1), Marcos Mateus (a1) and Ligia Pinto (a1)
Abstract

Over the last decade, the Antarctic continent has been the object of intensive scientific programmes. However, the emphasis of these studies rarely focuses on the Antarctic as a source of potential elements such as mercury. The release of mercury to the environment is known to occur at Deception Island, associated with volcanic activity. In this study, a 3D hydrodynamic model was used to assess the role of water circulation on the dispersion of released mercury. Sea level variation and tidal circulation data were obtained. Residence time was calculated using two different approaches. Internal tide generation in summer and winter were recognized and the barotropic tidal components obtained. Lagrangian tracers were used to depict particle circulation (simulating particulate mercury) in a three month summer simulation for barotropic and baroclinic conditions. The results show that particles accumulate in the northern and western parts of the bay. It is acknowledged that the results of the 3D model are associated with a non-negligible uncertainty, which can only be reduced with an ongoing commitment to monitoring. The findings of this study indicate that mercury accumulation is occurring in Port Foster (Deception Island), which is a potential threat to the local ecosystem.

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Corresponding author
* d.m.figueiredo@uu.nl
References
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Baines, P.G. 1982. On internal tide generation models. Deep-Sea Research A - Oceanographic Research Papers, 29, 307338.
Baraldo, A. & Rinaldi, C.A. 2000. Stratigraphy and structure of Deception Island, South Shetland Islands, Antarctica. Journal of South American Earth Sciences, 13, 785796.
Barclay, A.H., Wilcock, W.S.D. & Ibáñez, J.M. 2009. Bathymetric constraints on the tectonic and volcanic evolution of Deception Island volcano, South Shetland Islands. Antarctic Science, 21, 153167.
Bargagli, R, Battisti, E, Focardi, S. & Formichi, P. 1993. Preliminary data on environmental distribution of mercury in northern Victoria Land, Antarctica. Antarctic Science, 5, 38.
Coelho, H.S., Neves, R.R., Leitão, P.C., Martins, H. & Santos, A.P. 1999. The slope current along the western European margin: a numerical investigation. Boletin Instituto Espanol de Oceanografia, 15, 6172.
Craig, P.D. 1987. Solutions for the internal tide generation over coastal topography. Journal of Marine Research, 45, 83105.
de Ferro, A.M. 2012. Fontes, transporte e especiação de elementos traço nos compartimentos ambientais da ilha Deception, Antártida. Msc thesis, Universidade Técnica de Lisboa, 75–76. [Unpublished].
de Ferro, A.M., Mota, A.M. & Canário, J. 2014. Pathways and speciation of mercury in the environmental compartments of Deception Island, Antarctica. Chemosphere, 95, 227233.
Ebinghaus, R., Kock, H.H., Temme, C., Einax, J.W., Lowe, A.G., Richter, A., Burrows, J.P. & Schroeder, W.H. 2002. Antarctic springtime depletion of atmospheric mercury. Environmental Science & Technology, 36, 12381244.
Foster, T.D., Foldvik, A. & Middleton, J.H. 1987. Mixing and bottom water formation in the shelf break region of the southern Weddell Sea. Deep-Sea Research A - Oceanographic Research Papers, 34, 17711794.
Flexas, M.M., Arias, M.R. & Ojeda, M.A. 2017. Hydrography and dynamics of Port Foster, Deception Island. Antarctic Science, 29, 8393.
Galindo-Zaldívar, J., Jabaloy, A., Maldonado, A. & Sanz de Galdeano, C. 1996. Continental fragmentation along the South Scotia Ridge transcurrent plate boundary (NE Antarctic Peninsula). Tectonophysics, 258, 275301.
González-Casado, J.M., Giner-Robles, J.L. & López-Martínez, J. 2000. Bransfield Basin, Antarctic Peninsula: not a normal backarc basin. Geology, 28, 10431046.
Hawkes, D.D. 1961. The geology of the South Shetland Islands. II: The geology and petrology of Deception Island. Falkland Islands Dependencies Survey Scientific Reports, No. 27, 43.
Lenn, Y.D., Chereskin, T.K. & Glatts, R.C. 2003. Seasonal to tidal variability in currents, stratification, and acoustic backscatter in an Antarctic ecosystem at Deception Island. Deep-Sea Research II - Topical Studies in Oceanography, 50, 16651683.
Levine, M.D., Padman, L., Muench, R.D. & Morison, J.H. 1997. Internal waves and tides in the western Weddell Sea: observations from Ice Station Weddell. Journal of Geophysical Research - Oceans, 102, 10731089.
Lopez, O., Garcia, M.A., Gomis, D., Rojas, P., Sospedra, J. & Sanchez-Arcilla, A. 1999. Hydrographic and hydrodynamic characteristics of the eastern basin of the Bransfield Strait (Antarctica). Deep-Sea Research I - Oceanographic Research Papers, 46, 17551778.
Lyard, F., Lefevre, F., Letellier, T. & Francis, O. 2006. Modelling the global ocean tides: modern insights from FES2004. Ocean Dynamics, 56, 394415.
Martins, F., Leitão, P.C., Silva, A. & Neves, R. 2001. 3D modeling in the Sado estuary using a new generic vertical discretization approach. Oceanologica Acta, 24, S51S62.
Molina, A., de Pablo, M.A. & Ramos, M. 2013. Deception Island, Antarctica, an Earth–Mars analogue. Extended abstract. 44th Lunar and Planetary Science Conference, pp. 2. Available at: https://www.lpi.usra.edu/meetings/lpsc2013/pdf/1202.pdf.
Murakami, K. 1991. Tidal exchange mechanism in enclosed regions. Proceedings of the 2nd International Conference on Hydraulic Modelling of Coastal Estuaries and River Waters, 111–120.
Padman, L. 1995. Small-scale processes in the Arctic Ocean. In Smith, Jr, W.O. & Grebmeier, J.M., eds. Arctic oceanography: marginal ice zones and continental shelves. Washington, DC: American Geophysical Union, 97129.
Padman, L., Plueddemann, A.J., Muench, R.D. & Pinkel, R. 1992. Diurnal tides near the Yermak Plateau. Journal of Geophysical Research, 97, 12 63912 652.
Pereira, A.F. & Castro, B.M. 2007. Internal tides in the southwestern Atlantic off Brazil: observations and numerical modeling. Journal of Physical Oceanography, 37, 15121526.
Pereira, J.L., Pereira, P., Padeiro, A., Goncalves, F., Amaro, E., Leppe, M., Verkulich, S., Hughes, K.A., Peter, H.U. & Canário, J. 2017. Environmental hazard assessment of contaminated soils in Antarctica: using a structured tier 1 approach to inform decision-making. Science of the Total Environment, 574, 443454.
Pérez-López, R., Giner-Robles, J.L., Martínez-Díaz, J.J., Rodríguez-Pascua, M.A., Bejar, M., Paredes, C. & González-Casado, J.M. 2007. Active tectonics on Deception Island (West Antarctica): a new approach by using the fractal anisotropy of lineaments, fault slip measurements and the caldera collapse shape. In Cooper, A.K., Barrett, P.J., Stagg, H., Storey, B., Stump, E., Wise, W. & the 10th ISAES Editorial Team ., eds. Antarctica: a keystone in a changing world. Washington, DC: The National Academic Press, 4 pp.
Siegel, S.M., Siegel, B.Z. & McMurtry, G. 1980. Atmosphere–soil mercury distribution: biotic factor. Water Air and Soil Pollution, 13, 109112.
Smith, K.L. 2003. Ecosystem studies at Deception Island, Antarctica: an overview. Deep-Sea Research II - Topical Studies in Oceanography, 50, 15951609.
Sturz, A.A., Gray, S.C., Dykes, K., King, A. & Radtke, J. 2003. Seasonal changes of dissolved nutrients within and around Port Foster Deception Island, Antarctica. Deep-Sea Research II - Topical Studies in Oceanography, 50, 16851705.
Torrecillas, C., Berrocoso, D. & García-García, A. 2006. The Multidisciplinary Scientific Information Support System (SIMAC) for Deception Island. In Fütterer, D.K., Damaske, D., Kleinschmidt, G., Miller, H. & Tessensohn, F., eds. Antarctica: contributions to global earth sciences. Berlin: Springer, 397402.
Trancoso, A.R., Saraiva, S., Fernandes, L., Pina, P., Leitão, P. & Neves, R. 2005. Modelling macroalgae using a 3D hydrodynamic-ecological model in a shallow, temperate estuary. Ecological Modelling, 187, 232246.
Vaz, N., Dias, J.M., Leitão, P. & Martins, W. 2005. Horizontal patterns of water temperature and salinity in an estuarine tidal channel: Ria de Aveiro. Ocean Dynamics, 55, 416429.
Vaz, N., Mateus, M., Plecha, S., Sousa, M.C., Leitão, P.C., Neves, R. & Dias, J.M. 2015. Modeling SST and chlorophyll patterns in a coupled estuary-coastal system of Portugal: the Tagus case study. Journal of Marine Systems, 147, 123137.
Vidal, J., Berrocoso, M. & Fernandez-Ros, A. 2012. Study of tides and sea levels at Deception and Livingston islands. Antarctic Science, 24, 193201.
Vidal, J., Berrocoso, M. & Jigena, B. 2011. Hydrodynamic modelling of Port Foster, Deception Island (Antarctica). In Machado, J.A.T., Baleanu, D. & Luo, A.C.J., eds. Nonlinear and complex dynamics: applications in physical, biological and financial systems. Berlin: Springer, 193203.
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Antarctic Science
  • ISSN: 0954-1020
  • EISSN: 1365-2079
  • URL: /core/journals/antarctic-science
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