Alkenone in surface sediments of the Nordic seas and the North Atlantic, supplement to: Rosell-Melé, Antoni (1998): Interhemispheric appraisal of the value of alkenone indices as temperature and salinity proxies in high-latitude locations. Paleoceanography, 13(6), 694-703


Alkenone sediment data from the Nordic seas and North Atlantic are compared to those from Sikes et al. (1997) for the Southern Ocean to evaluate further UK37 and UK37' as proxies to estimate cold temperatures (<10°C) and the effect of salinity and temperature in the relative abundance of 37:4 to the total abundance of C37 alkenones (37:4%). UK37 and UK37' are found to be equally viable as proxies, but there are significant regional differences in their cold temperature dependence. The measurement of 37:4% in cores from the North Atlantic region can be used to identify situations when UK37' is not a reliable paleothermometer. Variations in salinity are probably responsible for changes in the sedimentary record of 37:4%, and a preliminary calibration has been obtained for 37:4%=f(salinity). This new relationship should be further confirmed through field or laboratory experiments, but it paves the way to derive a molecular proxy to reconstruct paleosalinity in surface waters.

Related Identifier
Metadata Access
Creator Rosell-Melé, Antoni
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 1998
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 182 data points
Discipline Earth System Research
Spatial Coverage (-18.763W, 66.878S, 14.427E, 74.995N); Voring Plateau; Arctic Ocean; Atlantic Ocean; Norwegian-Greenland Sea; off Iceland
Temporal Coverage Begin 1985-07-21T00:00:00Z
Temporal Coverage End 1992-07-21T00:00:00Z