A high-resolution operational forecast system for oil spill response in Belfast Lough

Abascal, Ana J.; Castanedo, Sonia; Núñez, Paula Gabriela; Mellor, Adam; Clements, Annika; Pérez, Beatriz; Cárdenas, Mar; Chiri, Helios; Medina, Raúl

doi:10.1016/j.marpolbul.2016.09.042

Cited by 25 publications

(10 citation statements)

References 24 publications

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“…Delft3D is a widely applied state-of-the-art model used to evaluate different processes in complex estuarine systems. The Delft3D-FLOW module has been applied to several studies that have confirmed its ability to simulate hydrodynamics within estuaries (for example, Abascal et al, 2017;Bárcena et al, 2016;Iglesias and Carballo, 2010;García Alba et al, 2014;Jiménez et al, 2014;Núñez et al, 2019;Zhou et al, 2014). This and the possibilities offered by the Lagrangian module Delft3D-PAR to evaluate the transport of plastics (van Utenhove, 2019) have informed the selection of this model for this study.…”

Section: Methodsmentioning

confidence: 95%

Role of ocean tidal asymmetry and estuarine geometry in the fate of plastic debris from ocean sources within tidal estuaries

Núñez¹,

Castanedo²,

Medina³

2021

Estuarine, Coastal and Shelf Science

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Section: Methodsmentioning

confidence: 95%

Role of ocean tidal asymmetry and estuarine geometry in the fate of plastic debris from ocean sources within tidal estuaries

Núñez¹,

Castanedo²,

Medina³

2021

Estuarine, Coastal and Shelf Science

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“…The application of the transport module of the TESEO particle-tracking model (Abascal et al, 2007(Abascal et al, , 2017aChiri et al, 2020) was two-fold: (1) to simulate the transport and fate of floating marine litter entering from rivers and reaching the open waters of the SE Bay of Biscay and (2) to estimate a windage coefficient by calibrating the model according to the low-cost buoy trajectories. This module allows for simulating passive particles driven by surface currents, wind, and turbulent diffusion.…”

Section: Particle Transport Modelmentioning

confidence: 99%

“…Beaching along the coast was implemented by a simple approach: if the particle reaches the shoreline, it is identified as beached, and it is removed from the computational process. TESEO has been calibrated and validated by comparing virtual particle trajectories to observed surface drifter trajectories at regional and local scale (Abascal et al, 2009(Abascal et al, , 2017aChiri et al, 2019). TESEO is a 3D numerical model conceived to simulate the transport and degradation of hydrocarbons, but it has also been successfully applied to the study of transport and accumulation of marine litter in estuaries (Mazarrasa et al, 2019; and in open waters (Ruiz et al, 2022a).…”

Section: Particle Transport Modelmentioning

confidence: 99%

Modelling floating riverine litter in the south-eastern Bay of Biscay: a regional distribution from a seasonal perspective

Ruiz

Rubio²,

Abascal³

et al. 2022

Ocean Sci.

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Abstract. Although rivers contribute to the flux of litter to the marine environment, estimates of riverine litter amounts and detailed studies on floating riverine litter behaviour once it has reached the sea are still scarce. This paper provides an analysis of the seasonal behaviour of floating marine litter released by rivers within the south-eastern Bay of Biscay based on riverine litter characterizations, drifters, and high-frequency radar observations and Lagrangian simulations. Virtual particles were released in the coastal area as a proxy of the floating fraction of riverine litter entering from rivers and reaching the open waters. Particles were parameterized with a wind drag coefficient (Cd) to represent their trajectories and fate according to the buoyancy of the litter items. They were forced with numerical winds and measured currents provided by high-frequency radars covering selected seasonal week-long periods between 2009 and 2021. To gain a better insight into the type and buoyancy of the items, samples collected from a barrier placed at the Deba River (Spain) were characterized at the laboratory. Items were grouped into two categories: low-buoyancy items (objects not exposed to wind forcing, e.g. plastic bags) and highly buoyant items (objects highly exposed to wind forcing, e.g. bottles). Overall, low-buoyancy items encompassed almost 90 % by number and 68 % by weight. Weakly buoyant items were parameterized with Cd = 0 % and highly buoyant items with Cd = 4 %; this latter value is the result of the joint analysis of modelled and observed trajectories of four satellite drifting buoys released at the Adour (France), Deba (Spain), and Oria (Spain) river mouths. Particles parameterized with Cd = 4 % drifted faster towards the coast through the wind, notably during the first 24 h. In summer, over 97 % of particles beached after 1 week of simulation. In autumn this value fell to 54 %. In contrast, low-buoyancy items took longer to arrive at the shoreline, particularly during spring with fewer than 25 % of particles beached by the end of the simulations. The highest concentrations (>200 particles km−1) were recorded during summer for Cd = 4 % in the French region of Pyrénées-Atlantiques. Results showed that the regions in the study area were highly affected by rivers within or nearby the region itself. These results couple observations and a river-by-river modelling approach and can assist decision-makers on setting emergency responses to high fluxes of floating riverine litter and on defining future monitoring strategies for heavily polluted regions within the south-eastern Bay of Biscay.

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“…The model was implemented with five equidistant σ-coordinate layers in the vertical. The application of five σ-coordinate levels is sufficient and efficient for developing an operational oil spill system [62]. In addition, the Humber Estuary is a well-mixed estuary [26], hence, it does not necessitate multi-layers to resolve the vertical direction [35] (Table 1).…”

Section: Hydrodynamic Modelmentioning

confidence: 99%

Numerical Modelling of Oil Spill Transport in Tide-Dominated Estuaries: A Case Study of Humber Estuary, UK

Eke

Anifowose

Wiel

et al. 2021

JMSE

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Oil spills in estuaries are less studied and less understood than their oceanic counterparts. To address this gap, we present a detailed analysis of estuarine oil spill transport. We develop and analyse a range of simulations for the Humber Estuary, using a coupled hydrodynamic and oil spill model. The models were driven by river discharge at the river boundaries and tidal height data at the offshore boundary. Satisfactory model performance was obtained for both model calibration and validation. Some novel findings were made: (a) there is a statistically significant (p < 0.05) difference in the influence of hydrodynamic conditions (tidal range, stage and river discharge) on oil slick transport; and (b) because of seasonal variation in river discharge, winter slicks released at high water did not exhibit any upstream displacement over repeated tidal cycles, while summer slicks travelled upstream into the estuary over repeated tidal cycles. The implications of these findings for operational oil spill response are: (i) the need to take cognisance of time of oil release within a tidal cycle; and (ii) the need to understand how the interaction of river discharge and tidal range influences oil slick dynamics, as this will aid responders in assessing the likely oil trajectories.

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A high-resolution operational forecast system for oil spill response in Belfast Lough

Cited by 25 publications

References 24 publications

Role of ocean tidal asymmetry and estuarine geometry in the fate of plastic debris from ocean sources within tidal estuaries

Role of ocean tidal asymmetry and estuarine geometry in the fate of plastic debris from ocean sources within tidal estuaries

Modelling floating riverine litter in the south-eastern Bay of Biscay: a regional distribution from a seasonal perspective

Numerical Modelling of Oil Spill Transport in Tide-Dominated Estuaries: A Case Study of Humber Estuary, UK

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