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Internal tides and sediment movement on Horizon Guyot, Mid-Pacific Mountains
Cacchione, D.A.; Schwab, W.C.; Noble, M.; Tate, G. (1988). Internal tides and sediment movement on Horizon Guyot, Mid-Pacific Mountains. Geo-Mar. Lett. 8(1): 11-17. hdl.handle.net/10.1007/BF02238001
In: Geo-Marine Letters. Springer: Heidelberg; Berlin. ISSN 0276-0460, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Cacchione, D.A.
  • Schwab, W.C.
  • Noble, M.
  • Tate, G.

Abstract
    Internal tidal currents are the likely cause of erosional features such as current ripples, sand waves, and truncated bedding horizons on the sediment cap of Horizon Guyot. Current meter data obtained over a 9 month period in 1983–1984 at about 213 m above the guyot show that the tidal currents are anomalously strong for mid-oceanic depths, probably the result of topographically induced generation of internal tidal waves. An analysis of the initiation of motion of the foraminiferal sand by the internal tidal currents indicates that these currents, particularly during the months of March–May, are likely to transport the surficial sediment and generate the observed bedforms.

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