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Brighton CCA

A new centre for
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University of Brighton

This event is part of Silt

Join this online talk to find about Dr Lorna Linch’s current research.

When the keel of an iceberg exceeds water depth it ploughs through soft sediments, such as silt and clay, producing scours/ploughmarks that can be kilometres long, 100s of metres wide and tens of metres deep. Although the surface morphology of iceberg scours is well-documented, less is known about sub-scour deformation below the sea/lake floor. The aim of this research is to examine directly (macroscopically and microscopically, with thin sections) the style and intensity of deformation of silt and clay caused by the scouring action of iceberg keels in former Glacial Lake Agassiz, Manitoba, Canada. Results show that a distinctive suite of deformation structures characterise iceberg scoured silt and clay. This research is of value to reconstructing past environments and may eventually aid the installation and protection of offshore engineering structures on polar shelves. In addition, the particular character, and pattern, of the microscopic sedimentary structures that are generated by iceberg scouring may be of interest to artists.

Dr Lorna Linch is a Principal Lecturer in Earth Science within the School of Applied Sciences at the University of Brighton. Linch’s teaching and research interests are glacial and periglacial processes, cold climate geomorphology, sedimentology and micromorphology, and reconstructing Quaternary Environments. Linch is passionate about the environment and inspired by the outdoors – particularly mountainous and cold environments. Linch is interested in exploring how science can be expressed through art, and how art may inspire science.

This is part of a programme of events that respond to Silt by Nika Neelova with Carolina Caycedo and Rachael Champion.

To book your place, please click the Book Now button above. This online talk will be hosted on zoom – the link will be sent 2 hours before the start time. Live captioning will be enabled during the talk. Please email with any questions.

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