- Bodenkunde (1) (remove) - Soil moisture fluctuations recorded
in Saharan dust deposits on Lanzarote (CanaryIslands) over the
last 180 ka (2010) - Aeolian sediments trapped in volcanically
dammed valleys on Lanzarote, Canary Islands, were investigated
in order to reveal environmental changes over the last 180 ka.
Clay content and frequency dependent magnetic susceptibility
were used as proxies for pedogenesis and palaeo-soil moisture.
During the last 180 ka, these proxies showed a general pattern
of enhanced soil moisture during glacials and stadials and more
arid conditions during interglacials and interstadials.
Comparisons of these results with proxies from regional
palaeoclimate studies identified a positive correlation with
proxies of trade wind strength off northwest Africa and inverse
correlations with both sea surface temperatures in the northeast
Atlantic and the extent of Mediterranean vegetation. Possible
causes for the observed pattern include a glacial enhancement of
precipitation from westerly