noaa-lake-5453
Lake Edward, East Africa 5400 Year Calcite Mg Data
Russell, J.M.; Johnson, T.C.; Talbot, M.R.
Lake Edward, East Africa 5400 Year Calcite Mg Data
2006-10-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/5453
Investigator
J.M.
Russell
Investigator
T.C.
Johnson
Investigator
M.R.
Talbot
earth science
paleoclimate
paleolimnology
magnesium,calcite,null,mole percent,null,paleolimnology,composited|detrended,x-ray diffraction,N,3 core stack detrended using second-order polynomial
earth science
paleoclimate
paleolimnology
magnesium,calcite,null,mole percent,null,paleolimnology,composited,x-ray diffraction,N,3 core stack
earth science
paleoclimate
paleolimnology
age,null,null,calendar year before present,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
geochemistry
geoscientificInformation
5400 cal yr BP
0 cal yr BP
Complete
-.4167
-.4167
29.75
29.75
917
917
Continent
Africa
Eastern Africa
Lake Edward>LATITUDE -.4167>LONGITUDE 29.75
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
Russell, J.M., T.C. Johnson, M.R. Talbot. 2003. A 725 yr cycle in the climate of central Africa during the late Holocene. Geology Vol. 31, no. 8, pp. 677-680
High-resolution analyses of the chemical and stable isotope composition of endogenic calcite from Lake Edward, an equatorial rift lake in central Africa, reveal large oscillations in African climate and moisture balance over the past 5400 yr. These oscillations indicate a series of droughts from 4900 to 400 yr B.P. that define a drought period of ~725 yr. This period may be correlated to variations in the Indian Ocean monsoons, as documented by similar periods in sea-surface salinity records from the northern Indian Ocean. The similarities in periodicity of the Lake Edward and Indian Ocean records may indicate that low-frequency variability within the Indian and Pacific Oceans dominates millennial-scale African moisture balance and the Holocene climate of the tropical Indian Ocean.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/edward2003.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/edward2003.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11