Transfer-function '134/6' - a new approach to estimate sea-surface temperatures and salinities of the eastern North Atlantic from the planktonic foraminifers in the sediment
A considerable number of samples recently obtained from the collections of the German research vessels "Meteor" and "Valdivia" in the eastern North Atlantic have been evaluated for their planktonic foraminiferal composition. The new data enabled a quantitative and qualitative imp...
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| Format: | Article in Journal/Newspaper |
| Language: | English |
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Bornträger
1985
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| Online Access: | https://oceanrep.geomar.de/id/eprint/56727/ https://oceanrep.geomar.de/id/eprint/56727/1/Pflaumann_U_1985_C.pdf |
| Summary: | A considerable number of samples recently obtained from the collections of the German research vessels "Meteor" and "Valdivia" in the eastern North Atlantic have been evaluated for their planktonic foraminiferal composition. The new data enabled a quantitative and qualitative improvement of the data base for a statistical analysis of planktonic foraminiferal fauna using the transfer function technique of IMBRIE & KIPP (1971). 134 modern sediment samples from the eastern North Atlantic were selected according to their excellent preservation of foraminifera and treated by a principle component analysis. The resultant six factors account for 96.7% of the variance of the original data comprising 15 major species and species groups. A multiple regression analysis between these factors and the actual mean sea-surface temperatures and salinities resulted in a set of equations. They can be applied for estimating past sea-surface winter and summer temperatures and salinities from planktonic foraminiferal assemblages for approximately the last 500,000 years. The new functions have a standard error of 1.2° C for winter and summer temperature and 0.4‰ for annual salinity. |
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