POF_joint_paper_REVISION.pdf (13.53 MB)
Meteotsunamis and other anomalous “tidal surge” events in Western Europe in Summer 2022
journal contributionposted on 2023-05-10, 14:28 authored by Emiliano Renzi, C Bergin, T Kokina, DS Pelaez-Zapata, D Giles, F Dias
We investigate occurrences of anomalous tidal activity in coastal waters of north-west Europe during Summer 2022. Sightings of an anomalous “tidal surge” occurred on 18 June 2022 in Wales, followed by similar observations in Ireland, France, and Spain. Several anomalous long-wave events were also reported in south England and Wales in the morning of 19 July 2022. We analyzed surface and high-altitude air pressure fields, and sea level oscillations for both days. Our detailed analysis reveals that the 18 June events were a series of meteotsunamis, propagating over several countries in Western Europe and triggered by localized pressure perturbations, originating within a low-pressure area over the North Atlantic Ocean. A local analysis of the southern coast of Ireland suggests that Proudman resonance was the determinant mechanism that amplified the meteotsunami traveling eastward in the afternoon of 18 June. A similar analysis of the 19 July events suggests that the tidal surge reported in the UK and anomalous signals recorded in Ireland and France were episodes of seiching triggered by infragravity waves, resonated subharmonically by wind waves. Numerical simulations of the 18 June event were performed with Volna-OP2, which solves the non-linear shallow water equations using a finite volume discretization. The influence of the atmospheric wave velocity on the amplification of the sea surface elevation is analyzed.
European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (Grant Agreement No. 833125-HIGHWAVE)
Marine Renewable Energy Ireland (MaREI) - The SFI Centre for Marine Renewable Energy Research
Science Foundation IrelandFind out more...
Cambridge Service for Data Driven Discovery (CSD3) - A National Data Intensive Science Cloud for Converged Simulation, AI & Analytics
Engineering and Physical Sciences Research CouncilFind out more...
- Mathematical Sciences
Published inPhysics of Fluids
- AM (Accepted Manuscript)
Rights holder© Authors
Publisher statementThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in E. Renzi, C. Bergin, T. Kokina, D. S. Pelaez-Zapata, D. Giles, F. Dias; Meteotsunamis and other anomalous “tidal surge” events in Western Europe in Summer 2022. Physics of Fluids 1 April 2023; 35 (4): 046605. https://doi.org/10.1063/5.0139220 and may be found at https://doi.org/10.1063/5.0139220.