Charlotte Lyddon

GM Geomorphology

The 2018 Outstanding Student Poster and PICO (OSPP) Award is awarded to Charlotte Lyddon for the poster/PICO entitled:

Flood hazard assessment for a hyper-tidal estuary and river as a function of tide-surge-morphology interaction (Lyddon, C.; Plater, A.; Brown, J.; Leonardi, N.)

Click here to download the poster/PICO file.

Charlotte Lyddon is PhD student at the University of Liverpool and National Oceanography Centre Liverpool. Her research aims to understand the sensitivity of coastal flood hazard to the interaction of storm surge, local wind, waves, river and morphology in a hyper-tidal estuary. Accurate prediction of key combinations of factors that define the total water level and wave hazard can facilitate the management and emergency response of coastal resources, reduce economic risks and inform decision makers to minimize loss of life from extreme events.
The PICO presented at EGU 2018 discusses the spatial and temporal variability of extreme water levels in a hyper-tidal estuary, as a function of event severity, timing of the storm surge peak relative to tidal high water and storm surge shape. This research uses the Severn Estuary, south-west England, as a test case of hyper-tidal estuaries worldwide, due to its national significant for nuclear and energy assets and because it has the second largest tidal range in the world. Delft3D-FLOW is used to propagate extreme water levels through the Severn Estuary, incorporating tide-surge-river interaction. The model outputs identify the combined effect of factors which contribute to extreme water levels in hyper-tidal estuaries for local scale, flood hazard management.