Sea surface productivity and temperature detected by coccolith accumulation rates from the southeastern Pacific off Chile
| Cobertura |
MEDIAN LATITUDE: -33.749811 * MEDIAN LONGITUDE: -73.173483 * SOUTH-BOUND LATITUDE: -44.284160 * WEST-BOUND LONGITUDE: -75.864660 * NORTH-BOUND LATITUDE: -22.841660 * EAST-BOUND LONGITUDE: -70.489830 * DATE/TIME START: 2001-04-02T08:16:00 * DATE/TIME END: 2001-05-11T20:09:00 |
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| Data(s) |
07/04/2014
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| Resumo |
Recent coccoliths from 74 surface sediment samples recovered from the southeastern Pacific off Chile were examined quantitatively to investigate modern regional gradients of sea surface productivity and temperature. All findings are based on coccolith accumulation rates. Therefore an approach was designed to estimate recent sedimentation rates based on 210Pb and bulk chemistry analyses of the same set of surface samples. Highest total coccolith accumulation rates were found off north-central Chile, where seasonal upwelling takes place. Based on amultiple linear regression between calculated coccolith accumulation rates andWorld Ocean Atlas derived sea surface temperatures, a calibrationmodel to reconstruct annual average temperatures of the uppermost 75 mof thewater column is provided. Themodelwas cross-validated and the SST estimateswere compared with SST observed and SST estimates based on diatoms and planktonic foraminifera, showing a good correlation. |
| Formato |
application/zip, 3 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.831487 doi:10.1594/PANGAEA.831487 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Saavedra-Pellitero, Mariem; Baumann, Karl-Heinz; Hernández-Almeida, Iván; Flores, José-Abel; Sierro, Francisco Javier (2013): Modern sea surface productivity and temperature estimations off Chile as detected by coccolith accumulation rates. Palaeogeography, Palaeoclimatology, Palaeoecology, 392, 534-545, doi:10.1016/j.palaeo.2013.10.010 |
| Palavras-Chave | #Average (0-75 m) corresponds to Locarnini et al., 2006; C. leptoporus flux; C. pelagicus flux; Calcidiscus leptoporus flux; Calciosolenia sp. flux; Center for Marine Environmental Sciences; Coccolith accumulation rates (CAR).; Coccoliths, total flux; Coccoliths tot flux; Coccolithus pelagicus flux; DBD; Delta SST residual; Density, dry bulk; E. huxleyi flux; Emiliania huxleyi flux; Estimated; Estimated, relative abundance corresponds to Saavedra-Pellitero et al. (2011).; Estimated Coccolith Accumulation Rates (CAR).; Event; F. profunda flux; Florisphaera profunda flux; G. muellerae flux; G. oceanica flux; Gephyrocapsa muellerae flux; Gephyrocapsa oceanica flux; Gephyrocapsa small, flux; Gephyrocapsa small flux; H. carteri flux; Helicosphaera carteri flux; MARUM; Observed (0-75m) corresponds to Locarnini et al. (2006).; Oolithotus sp. flux; R. clavigera flux; Relative abundance corresponds to Saavedra-Pellitero et al. (2011).; Rhabdosphaera clavigera flux; Sea surface temperature; Sea surface temperature, residual; Sedimentation rate per year; Sedim rate; SST; Syracosphaera spp. flux; Umbellosphaera spp. flux; Umbilicosphaera spp. flux |
| Tipo |
Dataset |
