Now showing items 1-15 of 15

    • Assessment of Tc-99 monitoring within the western Irish Sea using a numerical model 

      Olbert, Agnieszka Indiana; Hartnett, Michael; Dabrowski, Tomasz (Elsevier ScienceDirect, 2010-05-26)
      Water circulation patterns and associated material transport within a highly dynamic system such as the Irish Sea are complex phenomena. Although Tc-99 monitoring programme undertaken by the Radiological Protection Institute ...
    • Cyclonic circulation in the western Irish Sea in future climate 

      Olbert, Agnieszka Indiana; Hartnett, Michael; Dabrowski, Tomasz (International Association for Hydro-Environment Engineering and Research, 2011-07-01)
      The Irish Sea (IS) is a semi-enclosed body of water on the European Continental Shelf and the Western Irish Sea Gyre (WISG) is a characteristic phenomenon of the Sea. The gyre due to its significant effects on the circulation, ...
    • Determination of flushing characteristics of the Irish Sea: A spatial approach 

      Dabrowski, Tomasz; Hartnett, Michael T.; Olbert, Agnieszka Indiana (Elsevier ScienceDirect, 2011-12-08)
      The Authors devised a novel generic approach to assessing the flushing of the Irish Sea through the determination of spatially distributed residence times and the development of flushing homogeneity curves. Results indicate ...
    • The effects of array configuration on the hydro-environmental impacts of tidal turbines 

      Fallon, David; Hartnett, Michael; Olbert, Agnieszka Indiana; Nash, Stephen (Elsevier, 2014-04)
      The economic viability of tidal turbines will require the deployment of multiple devices in array formations in a manner analogous to wind farms. This research investigates the effects of the configuration of a tidal turbine ...
    • Effects of complex hydrodynamic processes on the horizontal and vertical distribution of Tc-99 in the Irish Sea 

      Olbert, Agnieszka Indiana; Hartnett, Michael; Dabrowski, Tomasz (Elsevier ScienceDirect, 2010-10-14)
      The increased discharge of Tc-99 from the Sellafield plant following the commissioning of the Enhance Actinide Removal Plant in 1994 was reflected in higher Tc-99 activity concentrations over much of the Irish Sea The ...
    • Influence of seasonal circulation on flushing of the Irish Sea 

      Dabrowski, Tomasz; Hartnett, Michael T.; Olbert, Agnieszka Indiana (Elsevier ScienceDirect, 2009-12-16)
      We applied a three-dimensional general ocean and coastal circulation model to the Irish Sea in order to determine water renewal time scales in the region. The model was forced with meteorological data for 1995, a year with ...
    • An integrated approach to trophic assessment of coastal waters incorporating measurement, modelling and water quality classification 

      Hartnett, Michael; Nash, Stephen; Olbert, Agnieszka Indiana (2012)
      Various protocols have been developed for trophic assessment of coastal waters but most incorporate single value compliance criteria for water quality parameters which, in reality, exhibit significant spatial variation. ...
    • Long-term inter-annual variability of a cyclonic gyre in the western Irish Sea 

      Olbert, Agnieszka Indiana; Hartnett, Michael; Dabrowski, Tomasz (Elsevier ScienceDirect, 2011-05-26)
      The western Irish Sea gyre (WISG) is a cyclonic baroclinic flow around a dome of stagnant water which develops each year during the heating season in the western Irish Sea. Research was carried out to determine long-term ...
    • Mechanisms of flooding in Cork City 

      Olbert, Agnieszka Indiana; Comer, Joanne; Nash, Stephen; Hartnett, Michael (International Association of Hydrological Sciences, 2015-11-17)
      Flooding is one of the most frequent and devastating natural disasters. Many urban developments are located in estuaries where river flow and sea water merge. Cork City situated in the River Lee estuary frequently subject ...
    • Parameterization of turbulence models using 3DVAR data 

      Olbert, Agnieszka Indiana; Nash, Stephen; Hartnett, Michael (City University of New York, 2014-01-08)
      In this research the 3DVAR data assimilation scheme is implemented in the numerical model DIVAST in order to optimize the performance of the numerical model by selecting an appropriate turbulence scheme and tuning its ...
    • Regional modelling of the 21st century climate changes in the Irish Sea 

      Olbert, Agnieszka Indiana; Dabrowski, Tomasz; Nash, Stephen; Hartnett, Michael (Elsevier, 2012-06)
      An assessment of the complex evolution of climate change signals in the Irish Sea over the 21st century is presented in this paper. Potential impacts of climate change on the local hydrography are explored and interrelationships ...
    • Storms and surges in Irish coastal waters 

      Olbert, Agnieszka Indiana; Hartnett, Michael (Elsevier ScienceDirect, 2010-04-29)
      Mechanisms of storm surge formation and severity on the north European continental shelf and, in particular, in the Irish coastal waters are examined in this paper. A numerical surge model was developed and used in combination ...
    • Tide-surge interactions and their effects on total sea levels 

      Olbert, Agnieszka Indiana; Nash, Stephen; Cunnane, Conleth; Hartnett, Michael (Springer Verlag, 2013-05-08)
      The research presented in this paper involves the application of the joint probability method to the estimation of extreme water levels resulting from astronomical tides and surge residuals and the investigation of the ...
    • Tide-surge interactions and their effects on total sea levels in Irish coastal waters 

      Olbert, Agnieszka Indiana; Nash, Stephen; Cunnane, Conleth; Hartnett, Michael (Springer, 2013-06)
      The research presented in this paper involves the application of the joint probability method to the estimation of extreme water levels resulting from astronomical tides and surge residuals and the investigation of the ...
    • Turbulence modelling using 3DVAR data assimilation in laboratory conditions 

      Olbert, Agnieszka Indiana; Nash, Stephen; Hartnett, Michael (2013)
      The viability of turbulence parameter estimation in a numerical model using 3DVAR data assimilation technique is explored in this research. Water currents measured in a physical model are assimilated into the numerical ...