Browsing by Author "Nash, Stephen"
Now showing items 21-40 of 53
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High-resolution multi-scale modelling of coastal flooding due to tides, storm surges and rivers inflows: A Cork city example
Olbert, Agnieszka Indiana; Comer, Joanne; Nash, Stephen; Hartnett, Michael (Elsevier, 2017-01-31)This paper demonstrates the capability of a new state-of-the-art flood modelling system consisting of multiple nested models to simulate urban coastal flood inundation. A flood event in Cork City, Ireland which occurred ... -
Hydrodynamic modelling approaches to assess mechanisms affecting the structural performance and maintenance of vortex drops shaft structures
Carty, Alan; O’Neill, Colin; Nash, Stephen; Clifford, Eoghan; Mulligan, Sean (Taylor & Francis, 2019-07-29)Vortex drop shafts, a key hydraulic structure within modern day deep sewer conveyance systems, must be designed structurally to sustain performance and longevity of operating life under very energetic loading conditions. ... -
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. ... -
Interactions, mechanisms and impact of future coastal urban flooding. A case study of Cork city
Kirkpatrick, Jennifer Isabel Munro; Nash, Stephen; Hartnett, Michael; Comer, Joanne; Olbert, Agnieszka Indiana (Hydrology Ireland, 2020-11-17)In coastal floodplains, high river flows and high coastal water levels can result in extensive flooding. Mechanisms of flooding play a crucial role in flood characteristics with distinctive differences in flood wave ... -
Investigations into influences of wind field resolution on simulating surface currents for galway bay
Ren, Lei; Nagle, Diarmuid; Nash, Stephen; Hartnett, Michael (Elsevier BV, 2017-10-01) -
Irish estuaries: Water quality status and monitoring implications under the water framework directive
Hartnett, Michael; Nash, Stephen (2011)The status of water quality of Irish estuaries is reviewed; this sheds light on the rationale behind the design of the national monitoring programme. Relative to other EU Member States, Ireland's coastal monitoring programme ... -
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 ... -
Modelling nutrient and chlorophyll_a dynamics in an Irish brackish waterbody
Hartnett, Michael; Nash, Stephen (Elsevier, 2004-01)This paper presents aspects of a research investigation into nutrient fluxes into and out of an important Irish estuary, Wexford Harbour, located in the southeast of Ireland. Details of the methodology applied, the data ... -
Modelling nutrients and chlorophyll-a dynamics in an Irish brackish waterbody
Hartnett, Michael; Nash, Stephen (Elsevier, 2004)This paper presents aspects of a research investigation into nutrient fluxes into and out of an important Irish estuary, Wexford Harbour, located in the southeast of Ireland. Details of the methodology applied, the data ... -
Modelling phytoplankton dynamics in a complex estuarine system
Nash, Stephen; Hartnett, Michael; Dabrowski, Tomasz (2011)The primary objective of this research was to develop a generic methodology for numerical modelling of the water quality within estuarine systems; in particular, this research focused on modelling nutrient dynamics and ... -
Modelling phytoplankton dynamics in a complex estuarine system
Nash, Stephen; Hartnett, Michael; Dabrowski, Tomasz (Thomas Telford Ltd., 2011-01-01)The primary objective of this research was to develop a generic methodology for numerical modelling of the water quality within estuarine systems; in particular, this research focused on modelling nutrient dynamics and ... -
Nested circulation modelling of inter-tidal zones: details of a nesting approach incorporating moving boundaries
Nash, Stephen; Hartnett, Michael (2010)Nested circulation models developed to date either exclude the flooding and drying process or prohibit flooding and drying of nested boundaries; they are therefore ill-suited to the accurate modelling of inter-tidal areas. ... -
A nested hydrodynamic model incorporating flooding and drying
Nash, Stephen; Hartnett, Michael (2009)A one-way nested version of the hydrobiological model DIVAST (Depth Integrated Velocity and Solute Transport) is introduced. The nested model allows flooding and drying of intertidal areas, a process often present in areas ... -
A nested version of the combined hydrodynamic and water quality model, DIVAST
Nash, Stephen (2007)The present research deals with the development of a one-way nested version of the combined hydrodynamic and water quality model DIVAST (Depth Integrated Velocity and Solute Transport). Initial research has concentrated ... -
A numerical modelling investigation of jellyfish transport and swimming behavior in Killary Harbour using a coastal hydrodynamic model
Sayeed, Md Ashkar Bin (NUI Galway, 2024-01-24)The occurrence of jellyfish in coastal areas, particularly in large numbers or swarms, can pose a significant threat to tourism and aquaculture. They can sting swimmers and bathers, become entangled in fishing nets, ... -
A numerical modelling investigation of the wave resource at Ireland's wave energy test sites
Atan, Reduan (2017-09)Ocean wave energy harvesting research and development has grown in recent years and wave energy conversion to electricity using wave energy converters (WECs) on a commercial scale is also becoming more realistic. This ... -
Numerical simulation and assessment of the effects of inlet configuration on the flushing time of a potable water service reservoir
O'Neill, Colin J.; Nash, Stephen; Clifford, Eoghan; Mullligan, Sean (Conferences and Events at DigitalCommons@USU, 2018-05-15)Service reservoirs provide the dual function of balancing supply with demand and providing adequate pressure in the water supply network by maintaining sufficient pressure head. In a potable water service reservoir, the ... -
Nutrient dynamics in Cork Harbour
Nash, Stephen; Hartnett, Michael (2005)Estuaries are commonly characterised by high productivity due to frequent if not continuous inputs of nutrients from domestic and industrial discharge effluents and from freshwater and marine sources. These forms of nutrient ... -
Observation and modeling of tide- and wind-induced surface currents in galway bay
Ren, Lei; Nash, Stephen; Hartnett, Michael (Elsevier BV, 2015-10-01) -
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 ...