noaa-lake-6051
Lake Tanganyika Deglacial Biogenic Silica and TOC Data
Tierney, J.E.; Russell, J.M.
Lake Tanganyika Deglacial Biogenic Silica and TOC Data
2008-02-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/6051
Investigator
J.E.
Tierney
Investigator
J.M.
Russell
earth science
paleoclimate
paleolimnology
depth,null,null,centimeter,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
biogenic silica,sediment,null,weight percent,null,paleolimnology,null,spectrophotometry,N,method of Mortlock and Froelich 1989
earth science
paleoclimate
paleolimnology
age,null,null,calendar year before present,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
organic carbon,sediment,null,weight percent,null,paleolimnology,null,elemental analysis,N,null
earth science
paleoclimate
paleolimnology
geochemistry
geoscientificInformation
18355 cal yr BP
10360 cal yr BP
Complete
-6.71378
-6.71378
29.832616
29.832616
773
773
Continent
Africa
Eastern Africa
Lake Tanganyika
Lake Tanganyika Core NP04-KH3>LATITUDE -6.71378>LONGITUDE 29.832616
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
Tierney, J.E.,Russell, J.M. 2007. Abrupt climate change in southeast tropical Africa influenced by Indian monsoon variability and ITCZ migration. Geophys. Res. Lett., 34, L15709.
The timing and magnitude of abrupt climate change in tropical Africa during the last glacial termination remains poorly understood. High-resolution paleolimnological data from Lake Tanganyika, Southeast Africa show that wind-driven seasonal mixing in the lake was reduced during the Younger Dryas, Inter-Allerød Cool Period, Older Dryas, and Heinrich Event 1, suggesting a weakened southwestIndian monsoon and a more southerly position of the Inter-Tropical Convergence Zone over Africa during these intervals. These events in Lake Tanganyika, coeval with millennial and centennial-scale climate shifts in the high latitudes, suggest that changes in ITCZ location and Indian monsoon strength are important components of abrupt global climate change and that their effects are felt south of the equator in Africa. However, we observe additional events in Lake Tanganyika of equal magnitude that are not correlated with high-latitude changes, indicating the potential for abrupt climate change to originate from within tropical systems.
STUDY NOTES: This dataset includes biogenic silica and total organic carbon
as measured on core NP04-KH3 from Lake Tanganyika, spanning
the time interval coincident with the last deglaciation.
Chronology for the core was established by C14-AMS dating.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2007.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2007.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11