noaa-ocean-10494
Eastern South Pacific GeoB 7139-2 70KYr d15N Data
De Pol-Holz, R.; Ulloa, O.; Lamy, F.; Dezileau, L.; Sabatier, P.; Hebbeln, D.
Eastern South Pacific GeoB 7139-2 70KYr d15N Data
2010-08-16
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/10494
Investigator
R.
De Pol-Holz
Investigator
O.
Ulloa
Investigator
F.
Lamy
Investigator
L.
Dezileau
Investigator
P.
Sabatier
Investigator
D.
Hebbeln
earth science
paleoclimate
paleoceanography
nitrogen,sediment,null,weight percent,null,paleoceanography,null,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
paleoceanography
age,null,null,calendar year before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
delta 15N,sediment,null,per mil AIR,null,paleoceanography,null,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleocean
nitrogen isotopes
geoscientificInformation
70090 cal yr BP
840 cal yr BP
Complete
-30.2
-30.2
-71.9832
-71.9832
-3267
-3267
Ocean
Pacific Ocean
Eastern Pacific Ocean
GeoB7139-2>LATITUDE -30.2>LONGITUDE -71.9832
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
De Pol-Holz, R., O. Ulloa, F. Lamy, L. Dezileau, P. Sabatier,
and D. Hebbeln. 2007.
Late Quaternary variability of sedimentary nitrogen isotopes
in the eastern South Pacific Ocean.
Paleoceanography, 22, PA2207, doi:10.1029/2006PA001308
We present high-resolution bulk sedimentary d15N data from
the southern edge of the present-day oxygen minimum zone
of the eastern South Pacific. The record is interpreted
as representing changes in water column nitrogen removal
during the last 70,000 years. We found significant
fluctuations in the isotopic signal that suggest major
reorganizations of the oxygen minimum zone at millennial
timescales. These fluctuations were not related to other
millennial-scale changes like the Northern Hemisphere's
Dansgaard-Oeschger climate swings or local changes in
primary productivity, so appear to be dictated by the
Southern Hemisphere's climate rhythm. This is preliminarily
corroborated by an overall agreement between our d15N data
and the sedimentary proxy of ice sheet dynamics in Patagonia,
which is in turn correlated with surface water properties
at the midlatitude subduction region of the eastern South
Pacific intermediate waters. Finally, potential implications
on late Quaternary changes in atmospheric CO2 concentrations
are discussed.
STUDY NOTES: High-resolution (mean ~83 years) bulk sedimentary nitrogen isotope
and percent nitrogen data from GeoB core 7139-2, coastal Chile,
eastern South Pacific. Nitrogen isotopes measured by EA-IRMS at
the stable Isotope facility of the University of Concepcion, Chile.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/depol-holz2007/depol-holz2007.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/depol-holz2007/depol-holz2007.txt
USA/NOAA
DIF
Version 9.8.4
2019-02-15
2019-02-15