noaa-lake-8658
Lake Tanganyika Late Holocene Diatom-inferred Conductivity Data
Stager, J.C.; Cocquyt, C.; Bonnefille, R.; Weyhenmeyer, C.; Bowerman, N.
Lake Tanganyika Late Holocene Diatom-inferred Conductivity Data
2009-09-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/8658
Investigator
J.C.
Stager
Investigator
C.
Cocquyt
Investigator
R.
Bonnefille
Investigator
C.
Weyhenmeyer
Investigator
N.
Bowerman
earth science
paleoclimate
climate reconstructions|paleolimnology
electrical conductivity,diatom assemblage|lake water,null,microsiemens per centimeter,null,climate reconstructions|paleolimnology,null,regression analysis,N,calibration data set: European Diatom Database Gasse et al. 1995; reconstruction technique: Weighted averaging regression with inverse de-shrinking
earth science
paleoclimate
climate reconstructions|paleolimnology
electrical conductivity,diatom assemblage|lake water,null,microsiemens per centimeter,null,climate reconstructions|paleolimnology,null,regression analysis,N,log microsiemens per centimeter; calibration data set: European Diatom Database Gasse et al. 1995; reconstruction technique: Weighted averaging regression with inverse de-shrinking
earth science
paleoclimate
climate reconstructions|paleolimnology
electrical conductivity,diatom assemblage|lake water,unspecified margin of error,microsiemens per centimeter,null,climate reconstructions|paleolimnology,null,regression analysis,N,log microsiemens per centimeter; calibration data set: European Diatom Database Gasse et al. 1995; reconstruction technique: Weighted averaging regression with inverse de-shrinking
earth science
paleoclimate
paleolimnology
age,null,null,calendar year before present,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
reconstruction
geoscientificInformation
3702 cal yr BP
-18 cal yr BP
Complete
-6.03
-6.03
28.53
28.53
Continent
Africa
Eastern Africa
Lake Tanganyika
Lake Tanganyika>LATITUDE -6.03>LONGITUDE 28.53
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
Stager, J.C., Cocquyt, C., Bonnefille, R., Weyhenmeyer, C., Bowerman, N. 2009. A late Holocene paleoclimatic history of Lake Tanganyika, East Africa. Quaternary Research, 72, 47-56.
A nearshore core (LT03-05) from the north basin of Lake Tanganyika provides diatom, pollen, and sedimentary time series covering the last ca. 3800 yr at 15-36 yr resolution. A chronology supported by 21 AMS dates on terrestrial and lacustrine materials allows us to account for ancient carbon effects on 14C ages and to propose refinements of the region's climatic history. Conditions drier than those of today were followed after ca. 3.30 ka by an overall wetting trend. Several century-scale climate variations were superimposed upon that trend, with exceptionally rainy conditions occurring 1.70ŋ1.40 ka, 1.15ŋ0.90 ka, 0.70ŋ0.55 ka, and 0.35ŋ0.20 ka. Around 0.55ŋ0.35 ka, during the Spörer sunspot minimum, drier conditions developed in the northern Tanganyika basin while more humid conditions were registered at Lakes Victoria and Naivasha. This indicates significant variability in the nature and distribution of near-equatorial rainfall anomalies during much of the Little Ice Age.
STUDY NOTES: Transfer function analysis of the LT03-05 diatom record produced a
reconstruction of lake water conductivity that is believed to represent
rainfall-driven dilution of the lake surface (lower conductivity = more
rainfall/less evaporation/more river discharge into the lake).
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2009.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2009.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11