noaa-ocean-10829
Amazon Fan ODP942 37KYr Tetraether Lipids Data
Bendle, J.A.; Weijers, J.W.H.; Maslin, M.A.; Sinninghe Damsté, J.S.; Schouten, S.; Hopmans, E.C.; Boot, C.S.; Pancost, R.D.
Amazon Fan ODP942 37KYr Tetraether Lipids Data
2011-04-15
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/10829
Investigator
J.A.
Bendle
Investigator
J.W.H.
Weijers
Investigator
M.A.
Maslin
Investigator
J.S.
Sinninghe Damsté
Investigator
S.
Schouten
Investigator
E.C.
Hopmans
Investigator
C.S.
Boot
Investigator
R.D.
Pancost
earth science
paleoclimate
paleocean
biomarkers
earth science
paleoclimate
paleocean
reconstruction
geoscientificInformation
Air Temperature Reconstruction
Last Glacial Maximum
PAGES 2k Network
PAGES LOTRED SA2k
36936 cal yr BP
619 cal yr BP
Complete
5.75
5.75
-49.1
-49.1
-3346
-3346
Ocean
Atlantic Ocean
North Atlantic Ocean
ODP 942>LATITUDE 5.75>LONGITUDE -49.1
None
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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
Bendle, J.A., J.W.H. Weijers, M.A. Maslin, J.S. Sinninghe Damsté,
S. Schouten, E.C. Hopmans, C.S. Boot, and R.D. Pancost. 2010.
Major changes in glacial and Holocene terrestrial temperatures
and sources of organic carbon recorded in the Amazon fan
by tetraether lipids.
Geochem. Geophys. Geosyst., 11 , Q12007, doi:10.1029/2010GC003308.
The Amazon basin is a major component of the global carbon
and hydrological cycles, a significant natural source of methane,
and home to remarkable biodiversity and endemism. Reconstructing
past climate changes in the Amazon basin is important for a better
understanding of the effect of such changes on these critical
functions of the basin. Using a novel biomarker proxy, based
on the membrane lipids of soil bacteria with a new regional
calibration, we present a reconstruction of changes in mean
annual air temperatures for the Amazon catchment during the
last 37 kyr B.P. Biomarkers were extracted from Ocean Drilling
Program sediment core ODP942 recovered from the Amazon fan.
The Amazon fan is a major depository for terrestrial sediments,
with the advantage that the terrestrial material captured
reflects a regional integration of the whole river catchment.
The reconstructed tropical Amazonian temperatures were ~5°C
cooler at the Last Glacial Maximum (~21°C) compared to modern
values (~26°C). This is in agreement with previous estimates
of tropical continental temperatures in the tropical Amazon
basin and tropical Africa during the Last Glacial Maximum.
Moreover, we also illustrate how the soil bacterial membrane
lipid record reveals major changes in basin dynamics and
sediment provenance during the glacial-Holocene transition,
impacting the biomarker reconstructions from ~11 kyr onward.
STUDY NOTES: GDGT biomarker data from an Amazon Fan sediment core for
the past 37,000 years. Data includes depths and age model
calculations for the sediment samples from ODP site 942;
LC-MS data-file IDs; integrations of peak responses for
GDGT biomarkers for all m/z; GDGT indices; reconstructed
temperatures and pHs; organic matter end-member calculations.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bendle2010/bendle2010.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/bendle2010/bendle2010.txt
USA/NOAA
DIF
Version 9.8.4
2019-06-07
2019-06-07