noaa-ocean-9039
Galapagos TR163-22 Foraminiferal d18O and Mg/Ca Data and SST Reconstruction
Lea, D.W.; Pak, D.K.; Belanger, C.L.; Spero, H.J.; Hall, M.A.; Shackleton, N.J.
Galapagos TR163-22 Foraminiferal d18O and Mg/Ca Data and SST Reconstruction
2006-07-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/9039
Investigator
D.W.
Lea
Investigator
D.K.
Pak
Investigator
C.L.
Belanger
Investigator
H.J.
Spero
Investigator
M.A.
Hall
Investigator
N.J.
Shackleton
earth science
paleoclimate
paleoceanography
magnesium/calcium,Globigerinoides ruber,null,dimensionless,null,paleoceanography,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleoceanography
sea surface temperature,magnesium/calcium,null,degree Celsius,null,climate reconstructions|paleoceanography,null,null,N,null
earth science
paleoclimate
climate reconstructions|paleoceanography
delta 18O,delta 18O|magnesium/calcium|sea water,null,per mil PDB,null,climate reconstructions|paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
age,null,null,calendar year before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
delta 18O,benthic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Uvigerina senticosa
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
delta 18O,Globigerinoides ruber,null,per mil PDB,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
trace metals in carbonates
earth science
paleoclimate
paleocean
oxygen isotopes
earth science
paleoclimate
paleocean
reconstruction
earth science
paleoclimate
paleocean
age control
geoscientificInformation
Sea Surface Temperature Reconstruction
135000 cal yr BP
1200 cal yr BP
Complete
.52
.52
-92.4
-92.4
-2830
-2830
Ocean
Pacific Ocean
North Pacific Ocean
TR163-22>LATITUDE .52>LONGITUDE -92.4
None
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Lea, D.W., D.K. Pak, C.L. Belanger, H.J. Spero, M.A. Hall, and N.J. Shackleton. 2006. Paleoclimate history of Galápagos surface waters over the last 135,000 yr. Quaternary Science Reviews, 25(11-12), 1152-1167. doi:10.1016/j.quascirev.2005.11.010.
Records of planktonic and benthic foraminiferal d18O and planktonic Mg/Ca from core TR163-22, just northwest of the Galápagos Islands, reveal a detailed (250-450 year resolution) climate history of the region over the last 135 thousand years (kyr). Sea surface temperatures (SSTs), reconstructed from G. ruber Mg/Ca, averaged 24.3ą0.4 °C during the Holocene, 22.6ą0.6 °C during marine isotope stage (MIS) 2, 3 and 4, and 26.0ą0.9 °C during MIS 5e. Changes in SST lead changes in both planktonic and benthic d18O by an average ~3 kyr, suggesting that SST changes in this region predated continental ice volume changes. Changes in SST display clear millennial scale variability, especially in marine isotope stage 3, with behavior somewhat similar to Antarctic proxy air temperature and South Pacific SST records. Removal of the temperature component from the planktonic d18O record demonstrates that glacial-interglacial d18O-water changes at this site were 1.0ą0.2 per mil,
similar to estimates for mean ocean shifts, implying that salinity changes due to regional hydrological variation between the Last Glacial Maximum and Holocene in the Galápagos region were minimal. Comparison between the TR163-22 SST record and an SST record from core TR163-19 North of the Equatorial Front reveals a largely similar broad-scale climate history, suggesting that changes in the Galápagos region were caused by large scale forcing rather than by local or regional dynamical changes. Changes in atmospheric greenhouse forcing are the most plausible explanation for the observed large-scale climate changes in the eastern equatorial Pacific.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/tr163-22-tab.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lea2006
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/syntrace/t21data/tr163-22-sytr-tab.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11