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On how to extract the paleotsunami history from a coastal lake record

TitleOn how to extract the paleotsunami history from a coastal lake record
Publication TypeConference Paper
Year of Publication2015
AuthorsBoes, E, Kempf, P, De Batist, M, Van Daele, M, Vandoorne, W, Fujiwara, O, Garrett, E, Heyvaert, VMA, Yokoyama, Y, Miyairi, Y, Irizuki, T, Moernaut, J, Pino, M, Urrita, R, Team, TQuakeRecNa
Conference Name4th International Tsunami Field Symposium
Conference LocationPhuket, Thailand
Abstract

Coastal lake records can be successfully used for reconstructing continuous histories of tsunamigenic megathrust earthquakes. Here, we apply a wide range of methods on one Japanese and two Chilean coastal lakes and show that the selection of coring locations benefits significantly from accompanying geophysical survey data. High-resolution seismic profiles display several strong reflectors in all three lake basins, allowing us to map the depth and extent of coarse-grained tsunami deposits. Side scan sonar imagery enables us to reconstruct past tsunami inundation pathways.

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