Okinawa Trough Oxygen Isotope and Mg/Ca-SST Data
Entry ID: NOAA_NCDC_PALEO_2005-072

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Summary
Abstract: Detailed deglacial and Holocene records of planktonic d18O and Mg/Ca based
sea surface temperature (SST) from the Okinawa Trough suggest that at ~18
to 17 thousand years before present (kyr B.P.), late spring/early summer
SSTs were approximately 3C cooler than today, while surface waters were up
to 1 practical salinity unit saltier. These conditions are consistent with
a weaker influence of the summer East Asian Monsoon (EAM) than today.
The timing of suborbital SST oscillations suggests a close link with abrupt
changes in the EAM and North Atlantic climate. A tropical influence, however,
may have resulted in subtle decoupling between the North Atlantic and the
Okinawa Trough/EAM during the deglaciation. Okinawa Trough surface water
trends in the Holocene are consistent with model simulations of an inland
shift of intense EAM precipitation during the middle Holocene. Millennial-
scale alternations between relatively warm, salty conditions and relatively
cold, fresh conditions suggest varying influence of the Kuroshio during
the Holocene.

Related URL
Link: GET DATA
Link: GET DATA
Description: Access to data files and documentation


Geographic Coverage
 N: 27.82 S: 27.82  E: 126.98  W: 126.98
 Max Depth: 1264 M

Data Set Citation
Dataset Originator/Creator: Sun, Y., D.W. Oppo, R. Xiang, W. Liu, and S. Gao
Dataset Title: Okinawa Trough Oxygen Isotope and Mg/Ca-SST Data
Dataset Series Name: IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2005-072
Dataset Release Date: November 2005
Dataset Release Place: Boulder, CO
Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology
Issue Identification: 2005-072
Other Citation Details: NOAA/NCDC Paleoclimatology Program
Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/by_contributor/sun...


Paleo_Temporal_Coverage
Paleo Start Date: 18 ka
Paleo Stop Date: 0 ka
Chrono Unit:


Location Keywords
OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN


Science Keywords
PALEOCLIMATE >OCEAN/LAKE RECORDS >ISOTOPES    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >MICROFOSSILS    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >OXYGEN ISOTOPES    [Definition]
PALEOCLIMATE >PALEOCLIMATE RECONSTRUCTIONS >SEA SURFACE TEMPERATURE RECONSTRUCTION    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION


Project
PAGES >Past Global Changes, IGBP    [Information]


Use Constraints
FUNDING SOURCES: NSFC (grants 40106006 and 40206007), SKLLQG (grant LLQG0204),
and the NSF (OCE-020776 to DWO).


Keywords
Okinawa Trough
Mg/Ca
d18O
SST reconstruction
Holocene


Data Set Progress
COMPLETE


Originating Center
NOAA/NCDC


Data Center
World Data Center for Paleoclimatology, Boulder    [Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/

Data Center Personnel
Name: WDC/PALEOCLIMATOLOGY, BOULDER
Phone: +1 (303) 497-6160
Fax: +1 (303) 497-6513
Email: paleo at noaa.gov
Contact Address:
World Data Center for Paleoclimatology
NOAA/NCDC Code E/GCx3
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA



Distribution
Distribution_Media: ftp
Distribution_Format: text, excel
Fees: none


Personnel
YOUBIN SUN
Role: INVESTIGATOR
Contact Address:
University of Tokyo
City: Tokyo
Country: Japan


DELIA W. OPPO
Role: INVESTIGATOR
Phone: (508) 289-2861
Email: doppo at whoi.edu
Contact Address:
Woods Hole Oceanographic Institution
MS 23, 117A Clark
City: Woods Hole
Province or State: MA
Postal Code: 02543
Country: USA


R. XIANG
Role: INVESTIGATOR


W. LIU
Role: INVESTIGATOR


S. GAO
Role: INVESTIGATOR


Publications/References
Sun, Y., D.W. Oppo, R. Xiang, W. Liu, and S. Gao. 2005.
Last deglaciation in the Okinawa Trough: Subtropical northwest
Pacific link to Northern Hemisphere and tropical climate
Paleoceanography, Vol. 20, PA4005, doi:10.1029/2004PA001061

Creation and Review Dates
DIF Creation Date: 2007-07-26
Last DIF Revision Date: 2007-08-07

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