Equatorial Pacific ODP 806/849 mid-Pleistocene Uk37 Data and SST ReconstructionEntry ID: NOAA_NCDC_PALEO_2006-014
Abstract: This data set consists of Equatorial Pacific ODP 806/849 mid-Pleistocene Uk37
Data and SST Reconstruction.
UK37' and SST data from ODP 806 Site B.
The samples from ODP 805 Site C used to bridge a coring gap are also shown.
UK37' and SST values are shown only for those samples where the C37:3 alkenone
could be detected.
Sea-surface temperatures (SSTs) reconstructed ... from Ocean Drilling Program Sites
806 and 849 in the western and eastern equatorial Pacific provide a history of
the strength of the Walker circulation between 1.5 and 0.5 Ma. A progressive
cooling in the eastern equatorial Pacific is paralleled by intensification of
the equatorial zonal SST gradient that began 1.17 Ma, prior to the expansion
of global ice volume associated with the mid-Pleistocene climate transition.
The SSTs in the eastern equatorial Pacific and the zonal gradient reached
modern values by 0.9 Ma. We propose that this onset and intensification of the
modern Walker circulation reduced heat flux, but increased moisture transport
to high latitudes, leading to the development of more extensive ice sheets and
the shift toward the 100 ka world.
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: McClymont, E.L. and A. Rosell-Mele
Dataset Title: Equatorial Pacific ODP 806/849 mid-Pleistocene Uk37 Data and SST Reconstruction
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2006-014
Dataset Release Date: 2/2006
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification: 2006-014
Other Citation Details: NOAA/NCDC Paleoclimatology ProgramOnline Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/mcc...
Paleo Temporal Coverage
ISO Topic Category
Data Set Progress
Distribution Media: ftp
Distribution Format: text, excel
McClymont, E.L. and A. Rosell-Mele. 2005. Links between the onset of modern
Walker circulation and the mid-Pleistocene climate transition. Geology, Vol.
33, No. 5, pp. 389-392. doi: 10.1130/G21292.1
Creation and Review Dates
DIF Creation Date: 2006-12-08
Last DIF Revision Date: 2007-04-12