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A foraminiferal δ18O record covering the last 2,200 years

Taricco, Carla and Alessio, Silvia Maria and Rubinetti, Sara and Vivaldo, Gianna and Mancuso, Salvatore A foraminiferal δ18O record covering the last 2,200 years. Scientific Data, 3. p. 160042. ISSN 2052-4463 (2016)

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Abstract

Thanks to the precise core dating and the high sedimentation rate of the drilling site (Gallipoli Terrace, Ionian Sea) we were able to measure a foraminiferal δ18O series covering the last 2,200 years with a time resolution shorter than 4 years. In order to support the quality of this data-set we link the δ18O values measured in the foraminifera shells to temperature and salinity measurements available for the last thirty years covered by the core. Moreover, we describe in detail the dating procedures based on the presence of volcanic markers along the core and on the measurement of 210Pb and 137Cs activity in the most recent sediment layers. The high time resolution allows for detecting a δ18O decennial-scale oscillation, together with centennial and multicentennial components. Due to the dependence of foraminiferal δ18O on environmental conditions, these oscillations can provide information about temperature and salinity variations in past millennia. The strategic location of the drilling area makes this record a unique tool for climate and oceanographic studies of the Central Mediterranean.

Item Type: Article
Identification Number: 10.1038/sdata.2016.42
Subjects: Q Science > QC Physics
Research Area: Computer Science and Applications
Depositing User: Gianna Vivaldo
Date Deposited: 20 May 2016 11:37
Last Modified: 30 Jun 2016 12:58
URI: http://eprints.imtlucca.it/id/eprint/3486

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