Herbert, Timothy D (2021): Uk'37 values and related SST at the Ideale Section - Montalbano Jonico, Southern Italy [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.934191
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2021-07-29 • DOI registered: 2021-10-20
Abstract:
Alkenone extraction was performed at Brown University, USA and followed freeze-drying ~5 g of homogenized dry sediment, using 100% Dichloromethane (DCM) and a Dionex 200 Accelerated Solvent Extractor (ASE). Prior to quantification, extracts were evaporated with nitrogen and reconstituted with 200 µL of toluene spiked with n-hexatriacontane (C36) and n-heptatriacontane (C37) internal standards. Samples were purified by silica gel flash column chromatography to further isolate the ketone fraction. Alkenone concentrations (C37:2, C37:3, C38:3 ethyl, C38:3 methyl, C38:2 2ethyl and C38:2 methyl ketones, resolved to baseline under our chromatographic conditions) were determined using an Agilent Technologies 6890 gas chromatograph–flame ionization detector (GC-FID), with Agilent Technologies DB-1 column (60 m, 0.32 mm diameter and 0.10 mm film thickness). In the present dataset we provide the alkenone unsaturation ratio (Uk'37) and different translations to Sea Surface Temperature (SST) according to different calibrations.
Supplement to:
Maiorano, Patrizia; Herbert, Timothy D; Marino, Maria; Bassinot, Franck; Bazzicalupo, Pietro; Bertini, Adele; Girone, Angela; Nomade, Sébastien; Ciaranfi, Neri (2021): Paleoproductivity Modes in Central Mediterranean During MIS 20—MIS 18: Calcareous Plankton and Alkenone Variability. Paleoceanography and Paleoclimatology, 36(8), https://doi.org/10.1029/2021PA004259
Coverage:
Latitude: 40.294900 * Longitude: 16.567800
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | AGE | Age | ka BP | Maiorano, Patrizia | Geocode | |
| 2 | Alkenone, unsaturation index UK'37 | UK'37 | Maiorano, Patrizia | |||
| 3 | Sea surface temperature | SST | °C | Maiorano, Patrizia | Calculated from UK'37 (Prahl et al., 1988) | |
| 4 | Sea surface temperature | SST | °C | Maiorano, Patrizia | Calculated from UK'37 (Müller et al, 1998) | |
| 5 | Sea surface temperature | SST | °C | Maiorano, Patrizia | SST, BAYSPAR (BAYesian SPAtially-varying Regression) | 16% percentile |
| 6 | Sea surface temperature | SST | °C | Maiorano, Patrizia | SST, BAYSPAR (BAYesian SPAtially-varying Regression) | median |
| 7 | Sea surface temperature | SST | °C | Maiorano, Patrizia | SST, BAYSPAR (BAYesian SPAtially-varying Regression) | 84% percentile |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1050 data points