Bollmann, Jörg; Henderiks, Jorijntje; Brabec, Bernhard (2002): (Appendix) Gephyrocapsa coccolith abundance and holocene paleotemperature assessment [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.844989, Supplement to: Bollmann, J et al. (2002): Global calibration of Gephyrocapsa coccolith abundance in Holocene sediments for paleotemperature assessment. Paleoceanography, 17(3), 7-1-7-9, https://doi.org/10.1029/2001PA000742
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Abstract:
A global sea surface temperature calibration based on the relative abundance of different morphotypes within the coccolithophore genus Gephyrocapsa in Holocene deep-sea sediments is presented. There is evidence suggesting that absolute sea surface temperature for a given location can be calculated from the relative abundance of Gephyrocapsa morphotypes in sediment samples, with a standard error comparable to temperature estimates derived from other temperature proxies such as planktic foraminifera transfer functions. A total of 110 Holocene sediment samples were selected from the Pacific, Indian, and Atlantic Oceans covering a mean sea surface temperature gradient from 13.6° to 29.3°C. Standard multiple linear regression analyses were applied to this data set, linking the relative abundance of Gephyrocapsa morphotypes to sea surface temperature. The best model revealed an r**2 of 0.83 with a standard residual error of 1.78°C for the estimation of mean sea surface temperature. This new proxy provides a unique opportunity for the reconstruction of paleotemperatures with a very small amount of sample material due to the minute size of coccoliths, permitting examination of thinly laminated sediments (e.g., a pinhead of material from laminated sediments for the reconstruction of annual sea surface temperature variations). Such fine-scale resolution is currently not possible with any other proxy. Application of this new paleotemperature proxy may allow new paleoenvironmental interpretations in the late Quaternary period and discrepancies between the different currently used paleotemperature proxies might be resolved.
Other version:
Bollmann, Jörg; Henderiks, Jorijntje; Brabec, Bernhard (2003): Coccolith Abundance and Holocene Paleotemperature. NOAA National Centers for Environmental Information, https://doi.org/10.25921/NYGS-NF63
Coverage:
Median Latitude: 6.543020 * Median Longitude: -107.776743 * South-bound Latitude: -39.967000 * West-bound Longitude: 2.183000 * North-bound Latitude: 49.190000 * East-bound Longitude: -7.800000
Date/Time Start: 1956-09-17T00:00:00 * Date/Time End: 1998-11-03T01:45:00
Minimum DEPTH, sediment/rock: 0.0000 m * Maximum DEPTH, sediment/rock: 30.0000 m
Event(s):
182-1127B * Latitude: -33.357500 * Longitude: 128.481280 * Date/Time Start: 1998-10-30T21:30:00 * Date/Time End: 1998-11-03T01:45:00 * Elevation: -479.3 m * Penetration: 510.7 m * Recovery: 440.56 m * Location: Great Australian Bight * Campaign: Leg182 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 55 cores; 510.7 m cored; 0 m drilled; 86.3 % recovery
A152-84 * Latitude: 44.349800 * Longitude: -30.267000 * Date/Time: 1960-01-01T00:00:00 * Elevation: -2750.0 m * Campaign: A150/180 * Method/Device: Piston corer (PC) * Comment: Project/Cruise uncertain
BATS_SedTrap_10013 * Latitude Start: 32.013000 * Longitude Start: -64.242000 * Latitude End: 32.345000 * Longitude End: -64.150000 * Date/Time Start: 1989-10-19T00:00:00 * Date/Time End: 1989-10-20T00:00:00 * Location: South Atlantic Ocean * Campaign: BATS (Bermuda Atlantic Time-Series Study) * Basis: Multiple * Method/Device: Trap, sediment, floating (TRAPSF)
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2573 data points
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