Physics
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994e%26psl.121..111s&link_type=abstract
Earth and Planetary Science Letters, Volume 121, Issue 1-2, p. 111-124.
Physics
8
Scientific paper
230Th was determined to investigate the influence of climatic cycles on the 230Thex flux into Norwegian-Greenland Sea sediments. The Fa/Fp ratios, i.e., the ratios between the measured 230Thex flux (Fa) into the sediments and the production rate of 230Th in the water column (Fp), vary considerably in the four cores investigated. Systematic variations in the ratios with the climatic cycles could not be observed. Furthermore, variations in the Fa/Fp ratios cannot be correlated between individual sites. It is argued that lateral sediment transport, due to deglaciation of ice sheets, bottom currents and/or downslope sediment transport, result in Fa/Fp ratios that are not equal to 1. The results suggest that both sediment winnowing (and/or erosion) and sediment focusing have strong influences upon sediment accumulation in the Norwegian-Greenland Sea.
Botz Reiner
Paetsch Hanno
Scholten Jan C.
Stoffers Peter
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