Evidence for slope instability and current-induced sediment transport, the RMSTitanic wreck search area, Newfoundland rise

Abstract

The first map of the sea bed morphology and sedimentary features within the RMSTitanic search area is proposed from the interpretation of SAR side-scan sonar images. Downslope sedimentary features such as erosional furrows and crown scarps constitute a 7 km wide instability corridor. A large field (15 km2) of asymmetrical sediment waves indicating a downslope transport is identified. Current-induced features corresponding to associated sand ribbons and barchan dunes resulting from the Western Boundary Undercurrent action are mapped. The morphology of theTitanic Canyon is also precised from the SAR images. Finally, the origin of the sea bed features is discussed in an attempt to link each bed form to a sedimentary process.

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Cochonat, P., Ollier, G. & Michel, J.L. Evidence for slope instability and current-induced sediment transport, the RMSTitanic wreck search area, Newfoundland rise. Geo-Marine Letters 9, 145–152 (1989). https://doi.org/10.1007/BF02431041

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Keywords

  • Sediment Transport
  • Sedimentary Feature
  • Search Area
  • Slope Instability
  • Sedimentary Process