RT journal article
T1 Direct in situ evidence of tidal roles in the formation of contourite depositional systems
A1 Yin, Shaoru
A1 Hernández Molina, Francisco Javier
A1 Bruno Mejías, Miguel
A1 Gomiz Pascual, Juan Jesús
A1 Rebesco, Michele
A1 Manley, Tom
A1 Manley, Patricia I.
A1 Li, Jiabiao
A2 Física Aplicada
K1 Contourites
K1 Bottom currents
K1 Tidal influence
K1 Internal tides
K1 In-situ observation
AB Tidal currents are ubiquitous in the oceans, but the role of these currents in contributing to form contourite depositional systems is poorly understood. Here we evaluated the significance of these currents in the formation and shaping of the contourite depositional systems. We examined in situ current data, spanning three months to one year, from four contourite sites at the exit of the Strait of Gibraltar, the northern North Atlantic Ocean, the Pacific margin of the Antarctic Peninsula, and the Lake Champlain. These current data indicate that tidal currents contribute to varying degrees to the formation of contourite erosional and depositional features, depending on the relative strengths of local tidal currents and background water mass circulation. Tidal currents enhance sediment resuspension in moats and channels, and encourage deposition on drifts, thereby promoting the development of contourite depositional systems. Baroclinic (internal) tidal currents are likely the dominant agent. Our findings indicate that tidal influences, especially those of internal tides, need to be considered instudies of the generation and evolution of contourite depositional systems.
PB Elsevier
SN 0012-821X
YR 2024
FD 2024
LK http://hdl.handle.net/10498/35149
UL http://hdl.handle.net/10498/35149
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026