Evaluating the role of physical mechanisms as possible triggers for turbidity currents in a deep ocean seamount [Resumo]

ABSTRACT: Turbidity currents on continental margins are often attributed to cyclic climate variability and sea-level change, while the causes of deep ocean turbidites are as yet to be tested. The Atlantic Iberian margin provides a unique setting to contrast deep ocean and continental environments, including depression features that further protect from resuspension and erosion by along slope bottom currents. We present records of low-frequency, non-periodic, climate-independent turbidites from three exceptionally deep cores covering up to 426,000 years in the Tore seamounts area. Here we evaluate the possible role of a number of physical processes that, when combined, may induce sufficiently intense bottom boundary events and likely precondition the recurrence pattern of the observed deep ocean turbidites.

Palavras-chave

Oceanography Internal Waves Sea level Circulation Deep ocean Topography

URI

http://hdl.handle.net/10400.9/6050

Citação

Lebreiro, S.M., Peliz, A., Anton, L., Nave, S., Reguera, M.I., Lozano-Luz, R., Waelbroeck, C., Crowhurst, S., Martrat, B., Lopez, J.F., Hebert, R. & Lopez-Rodriguez, A. (2025). Evaluating the role of physical mechanisms as possible triggers for turbidity currents in a deep ocean seamount. In: XIII Congreso de la Asociación Española de Climatologia, San Lorenzo de El Escorial (Madrid), Spain, 22-24 janeiro, 2025

Coleções

GCG - Resumos em livros de actas

Licença CC

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