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  Unravelling the impact of small-scale eddies on microplastic transport and pathways in the Clyde Scottish Marine Region


   School of Engineering

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  Dr Zaibin Lin, Prof D Pokrajac, Dr Xiaoyan Wei  Applications accepted all year round  Self-Funded PhD Students Only

About the Project

Microplastic pollution occurs in about 65% of Scotland’s estuaries and coastal seas [1] and significantly threatens the health of marine life and humans via food chain contaminations [2]. The most contaminated site was found in the Clyde Scottish Marine Region (SMR), which accommodates 18% of Scotland’s population [1] and provides 34% of the country’s jobs [3]. Microplastic transport in marine waters is controlled by various bio-chemical and physical processes (e.g., turbulent diffusion, sinking, washing-off, biofouling, resuspension, degradation, fragmentation) that lead to high spatiotemporal variability in the microplastic concentration [4]. Due to poor understanding and representation of these processes, numerical modelling of microplastic transport and trapping in estuaries is still in its infancy [5]. This makes it impossible to predict and mitigate the adverse impact of microplastic pollution on these environments and their socio-economic values particularly under escalating climate change (e.g., sea level rise, extreme storms, waves, and runoff). One of the largest uncertainties from the state-of-the-art microplastic models concerns parameterisations of horizontal and vertical turbulent diffusion [6], since the potentially important dynamic influence of small-scale eddies on microplastic processes is generally over-simplified. This project will advance the understanding and parameterisations of the above-mentioned influence and develop the computer simulation tools for microplastic transfer within the Clyde SMR, which can also be applied to other Scottish marine waters. 

Selection will be made on the basis of academic merit. The successful candidate should have, or expect to obtain, a UK Honours Degree at 2.1 or above in civil engineering, physical geography, environmental or earth sciences, mathematics, or a related subject.

APPLICATION PROCEDURE:

Formal applications can be completed online: https://www.abdn.ac.uk/pgap/login.php

• Apply for Degree of Doctor of Philosophy in Engineering

• State name of the lead supervisor as the Name of Proposed Supervisor

• State ‘Self-funded’ as Intended Source of Funding

• State the exact project title on the application form

When applying please ensure all required documents are attached:

• All degree certificates and transcripts (Undergraduate AND Postgraduate MSc-officially translated into English where necessary)

• Detailed CV, Personal Statement/Motivation Letter and Intended source of funding

Engineering (12)

Funding Notes

This PhD project has no funding attached and is therefore available to students (UK/International) who are able to seek their own funding or sponsorship. Supervisors will not be able to respond to requests to source funding. Details of the cost of study can be found by visiting https://www.abdn.ac.uk/study/international/finance.php

References

[1] Russell, M., and Webster, L., 2021. Microplastics in sea surface waters around Scotland. Marine Pollution Bulletin, 166, 112210.
[2] Kosuth, M., Mason, and S.A.,Wattenberg, E.V., 2018. Anthropogenic contamination of tap water, beer, and sea salt. PloS one, 13(4), p.e0194970.
[3] Multi-billion pound bid launched for new economic zone on River Clyde. Available at: https://projectscot.com/2022/06/multi-billion-pound-bid-launched-for-new-economic-zone-on-river-clyde/ (Accessed: 30 August 2022)
[4] Ledieu, L., Tramoy, R., Mabilais, D., Ricordel, S., Verdier, L., Tassin, B., and Gasperi, J., 2022. Macroplastic transfer dynamics in the Loire estuary: Similarities and specificities with macrotidal estuaries. Marine Pollution Bulletin, 182, 114019.
[5] Díez-Minguito, M., Bermúdez, M., Gago, J., Carretero, O. and Viñas, L., 2020. Observations and idealized modelling of microplastic transport in estuaries: the exemplary case of an upwelling system (Ría de Vigo, NW Spain). Marine Chemistry, 222, p.103780.
[6] Jalón-Rojas, I., Wang, X.H. and Fredj, E., 2019. A 3D numerical model to track marine plastic debris (TrackMPD): sensitivity of microplastic trajectories and fates to particle dynamical properties and physical processes. Marine pollution bulletin, 141, pp.256-272.

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