Lake Tanganyika Deglacial Biogenic Silica and TOC Data Tierney, J.E.; Russell, J.M. Tierney, J.E. Russell, J.M. 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 (Lake Tanganyika Core NP04-KH3>LATITUDE -6.71378>LONGITUDE 29.832616) 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. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Tierney, J.E. Investigator : Russell, J.M. 2008-02-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/6051 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2007.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2007.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2007.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2007.xls English https://www.ncdc.noaa.gov/paleo/study/6051 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2007.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/eastafrica/tanganyika2007.xls 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. START YEAR: 18355 cal yr BP * END YEAR: 10360 cal yr BP 29.832616 -6.71378 29.832616 -6.71378