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Variations of the NW African Trade Wind Regime during the Last 140 000 Years: Changes in Pollen Flux Evidenced by Marine Sediment Records

  • Henry Hooghiemstra
Part of the NATO ASI Series book series (ASIC, volume 282)

Abstract

Pollen was analyzed in 7 eastern Atlantic cores located between 37° and 9°N. The cores lie along a transect in the main trajectory of the northeast trade winds. The northern sector of the transect is close to source areas of pollen; whereas, the southern sector is distant (<2000 km) from the pollen source areas. Winds dominate in the transport of pollen from the northernmost part of the trade wind belt to the coring sites. Therefore, the pollen in the cores is a potential monitor of eolian transport. 18O and 14C based time control of the sediment sections made it possible to display the pollen data as influx records. After having estimated latitudinal shifts of the different pollen source areas, spatial and temporal variations in the pollen flux have been used to evaluate changes in the trade wind vigor.

Keywords

Trade Wind Oxygen Isotope Stage Pinus Pollen Pollen Influx Pollen Flux 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Henry Hooghiemstra
    • 1
    • 2
  1. 1.Institute of Palynology and Quaternary SciencesUniversity of GöttingenGöttingenGermany
  2. 2.Hugo de Vries-Laboratory, Dept. of Palynology and Paleo/Actuo-EcologyUniversity of AmsterdamAmsterdamThe Netherlands

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