Amundsen Sea Drifts: Indications for Changing Climate and Oceanographic Conditions

• Gabriele Uenzelmann-Neben ^[1] ; Karsten Gohl ^[1]
  1. [1] Alfred Wegener Institute for Polar and Marine Research

     Alfred Wegener Institute for Polar and Marine Research

     Kreisfreie Stadt Bremerhaven, Alemania

     
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 11, 2010 (Ejemplar dedicado a: Deep-Water Circulation: Processes & Products. International Congress. Baitona, Pontevedra, Spain. 16 & 17 June 2010), págs. 175-176
• Idioma: inglés
• Enlaces
  • Texto Completo Ejemplar
• Resumen

  • The analysis of seismic reflection data from the Amundsen Sea, southern Pacific Ocean reveals sedimentdrift formation already in Eocene/Oligocene times. This observation indicates bottom current activity and hence acold climate for the late Paleogene in an area, which today lies under the influence of AABW originating in the RossSea. The creation of sediment drifts increased accompanied by the occurrence of debris flows leading to theidentification of a phase of strong ice sheet extension, which then was followed by retreat of the grounding lineduring the last ~ 9 Ma.