Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/31371
Title: Agent-Based Socio-Spatial Modelling of Coupled Human-Flood Interactions along the UK Coast
Authors: Breen, MJ
Kebede, AS
König, CS
Issue Date: 30-May-2025
Publisher: IOP Publishing
Citation: Breen M.J., Kebede, A.S. and König, C.S. (2025) 'Agent-Based Socio-Spatial Modelling of Coupled Human-Flood Interactions along the UK Coast', Environmental Research: Infrastructure and Sustainability, 5 (2), 025013, pp. 1 - 25. doi: 10.1088/2634-4505/addeeb.
Abstract: This study uses agent-based modelling (ABM) to assess the socio-hydrological impacts of structural coastal flood protections (SCFPs) under different climate change scenarios considering three contrasting UK case studies: Southport, Weston-super-Mare, and Portsmouth. By integrating extreme coastal water level (ECWL) projections and population dynamics, the ABM simulations reveal five distinct phases: Design, Implementation, Latency, Flood, and Post-Flood. The results highlight that the Latency phase, whereby SCFP initially stabilises affected population (AfP), inadvertently encourages population growth in residual risk areas. This process exacerbates long-term flood exposure, leading to significant increases in AfP when ECWL exceeds the SCFP crest height, negating gains in flood protection from the initial construction/upgrade. As such, Southport and Weston-super-Mare saw a significant increase in coastal population within protected floodplains, with these populations potentially having limited experience with flooding, preparedness, and consequently heightened vulnerability. Conversely, Portsmouth, with limited residential development near SCFPs, demonstrated how existing land-use and high population density can reduce the unintended socio-hydrological consequences of SCFPs in densely-populated coastal settings. These findings reveal two key pathways that influence coastal population in response to SCFPs: Land-use Driven, where non-residential land-use limits population increase, and Population Driven, where high-density areas limit further growth. This study advances our understanding of the coupled human-flood dynamics by evaluating how SCFPs can increase flood impacts in the long-term by influencing socio-spatial distribution over the short- to medium-term. Moreover, it demonstrates how ABMs can provide valuable insights by simulating complex coupled human-flood dynamics; critical for supporting adaptive, resilient coastal management strategies in a changing climate.
Description: Data availability statement: The data cannot be made publicly available upon publication because no suitable repository exists for hosting data in this field of study. The data that support the findings of this study are available upon reasonable request from the authors.
Accepted manuscript published early online on 30 May 2025. Final version published on 10 June 2025.
URI: https://bura.brunel.ac.uk/handle/2438/31371
DOI: https://doi.org/10.1088/2634-4505/addeeb
Other Identifiers: ORCiD: Morgan J Breen https://orcid.org/0000-0002-5733-1762
ORCiD: Abiy Kebede https://orcid.org/0000-0002-7844-1151
ORCiD: Carola S. König https://orcid.org/0000-0002-9289-3154
Article number: 025013
Appears in Collections:Dept of Mechanical and Aerospace Engineering Research Papers
Dept of Civil and Environmental Engineering Research Papers

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