noaa-cave-13540
Lapa Grande Cave, Brazil Holocene Speleothem Oxygen Isotope Data
Stríkis, N.M.; Cruz, F.W.; Cheng, H.; Karmann, I.; Edwards, R.L.; Vuille, M.; Wang, X.; de Paula, M.S.; Novello, V.F.; Auler, A.S.
Lapa Grande Cave, Brazil Holocene Speleothem Oxygen Isotope Data
2012-11-16
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/13540
Investigator
N.M.
Stríkis
Investigator
F.W.
Cruz
Investigator
H.
Cheng
Investigator
I.
Karmann
Investigator
R.L.
Edwards
Investigator
M.
Vuille
Investigator
X.
Wang
Investigator
M.S.
de Paula
Investigator
V.F.
Novello
Investigator
A.S.
Auler
earth science
paleoclimate
speleothems
delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
speleothems
age,null,null,calendar kiloyear before present,null,speleothems,null,null,N,null
earth science
paleoclimate
speleothems
oxygen isotopes
geoscientificInformation
Monsoon
hydrology
10200 cal yr BP
1290 cal yr BP
Complete
-14.4227
-14.4227
-44.3656
-44.3656
Continent
South America
Brazil
Lapa Grande Cave>LATITUDE -14.4227>LONGITUDE -44.3656
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
Nicolas M. Strikis, Francisco W. Cruz, Hai Cheng, Ivo Karmann, R. Lawrence Edwards, Mathias Vuille, Xianfeng Wang, Marcos S. de Paula, Valdir F. Novello, and Augusto S. Auler. 2011.
Abrupt variations in South American monsoon rainfall during the Holocene based on a speleothem record from central-eastern Brazil.
Geology, Vol. 39, No. 11, pp. 1075-1078.
DOI: 10.1130/G32098.1
Well-dated high-resolution oxygen isotope records of speleothems in central-eastern Brazil spanning from 1.3 to 10.2 kyr B.P. reveal that the occurrence of abrupt variations in monsoon precipitation is not random. They show a striking match with Bond events and a significant pacing at ~800 yr, a dominant periodicity present in sea surface temperature records from both the North Atlantic and equatorial Pacific Oceans that is possibly related to periods of low solar activity (high 14C based on the atmospheric 14C record). The precipitation variations over central-eastern Brazil are broadly antiphased with the Asian and Indian Monsoons during Bond events and show marked differences in duration and structure between the early and late Holocene. Our results suggest that these abrupt multicentennial precipitation events are primarily linked to changes in the North Atlantic meridional overturning circulation (AMOC). Anomalous cross-equatorial flow induced by negative AMOC phases may have modulated not only the monsoon in South America but also affected El Nino-like conditions in the tropical Pacific during the Holocene.
STUDY NOTES: Stable oxygen isotope record of LG3 and LG11 stalagmite from Lapa Grande cave, central-eastern Brazil. The Lapa Grande record spans from 1.3 to 10.2 kyr B.P. with a hiatus from 6.2 to 5.9 kyr B.P.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/lapagrande2011lg3.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/southamerica/brazil/lapagrande2011lg11.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11