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Climatic and volcanic forcing revealed in a 50,000 year diatom record from Lake Massoko, Tanzania.

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Climatic and volcanic forcing revealed in a 50,000 year diatom record from Lake Massoko, Tanzania. / Barker, Philip A.; Williamson, David; Gasse, Françoise et al.
In: Quaternary Research, Vol. 60, No. 3, 11.2003, p. 368-376.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Barker, PA, Williamson, D, Gasse, F & Gibert, E 2003, 'Climatic and volcanic forcing revealed in a 50,000 year diatom record from Lake Massoko, Tanzania.', Quaternary Research, vol. 60, no. 3, pp. 368-376. https://doi.org/10.1016/j.yqres.2003.07.001

APA

Barker, P. A., Williamson, D., Gasse, F., & Gibert, E. (2003). Climatic and volcanic forcing revealed in a 50,000 year diatom record from Lake Massoko, Tanzania. Quaternary Research, 60(3), 368-376. https://doi.org/10.1016/j.yqres.2003.07.001

Vancouver

Barker PA, Williamson D, Gasse F, Gibert E. Climatic and volcanic forcing revealed in a 50,000 year diatom record from Lake Massoko, Tanzania. Quaternary Research. 2003 Nov;60(3):368-376. doi: 10.1016/j.yqres.2003.07.001

Author

Barker, Philip A. ; Williamson, David ; Gasse, Françoise et al. / Climatic and volcanic forcing revealed in a 50,000 year diatom record from Lake Massoko, Tanzania. In: Quaternary Research. 2003 ; Vol. 60, No. 3. pp. 368-376.

Bibtex

@article{c2347cba5e6d469eb10fe54338857a2c,
title = "Climatic and volcanic forcing revealed in a 50,000 year diatom record from Lake Massoko, Tanzania.",
abstract = "The interactions between climatic and volcanic forcing on diatom communities contained in a 50,000-year sedimentary sequence from Lake Massoko, Tanzania, were examined. At the century scale, 19 discrete tephra inputs to the lake isolated the sedimentary nutrient supply and shifted the diatom communities to those tolerant of low phosphorus levels, whereas at the millennial scale, diatom-inferred shifts in precipitation-evaporation based on conductivity optima and diatom life-form ratios were broadly similar to lake-level reconstructions from Lake Rukwa, Lake Malawi, and others in the region. Some fluctuations of Lake Massoko are consistent with the precession-driven changes in insolation, but the major climate shifts do not relate directly to orbital forcing of summer insolation south of the equator and show more consistency with records from the equatorial and northern tropics that receive rainfall from the passing of the intertropical convergence zone. Sea surface temperatures are strongly correlated to multimillennial-scale climate patterns over this region of Africa.",
keywords = "LAST GLACIAL MAXIMUM, EAST-AFRICA, ENVIRONMENTAL-CHANGES, SOUTHERN TROPICS, LATE PLEISTOCENE, WATER-BALANCE, CRATER LAKE, KYR BP, POLLEN, LEVEL",
author = "Barker, {Philip A.} and David Williamson and Fran{\c c}oise Gasse and Elisabeth Gibert",
year = "2003",
month = nov,
doi = "10.1016/j.yqres.2003.07.001",
language = "English",
volume = "60",
pages = "368--376",
journal = "Quaternary Research",
issn = "0033-5894",
publisher = "Academic Press Inc.",
number = "3",

}

RIS

TY - JOUR

T1 - Climatic and volcanic forcing revealed in a 50,000 year diatom record from Lake Massoko, Tanzania.

AU - Barker, Philip A.

AU - Williamson, David

AU - Gasse, Françoise

AU - Gibert, Elisabeth

PY - 2003/11

Y1 - 2003/11

N2 - The interactions between climatic and volcanic forcing on diatom communities contained in a 50,000-year sedimentary sequence from Lake Massoko, Tanzania, were examined. At the century scale, 19 discrete tephra inputs to the lake isolated the sedimentary nutrient supply and shifted the diatom communities to those tolerant of low phosphorus levels, whereas at the millennial scale, diatom-inferred shifts in precipitation-evaporation based on conductivity optima and diatom life-form ratios were broadly similar to lake-level reconstructions from Lake Rukwa, Lake Malawi, and others in the region. Some fluctuations of Lake Massoko are consistent with the precession-driven changes in insolation, but the major climate shifts do not relate directly to orbital forcing of summer insolation south of the equator and show more consistency with records from the equatorial and northern tropics that receive rainfall from the passing of the intertropical convergence zone. Sea surface temperatures are strongly correlated to multimillennial-scale climate patterns over this region of Africa.

AB - The interactions between climatic and volcanic forcing on diatom communities contained in a 50,000-year sedimentary sequence from Lake Massoko, Tanzania, were examined. At the century scale, 19 discrete tephra inputs to the lake isolated the sedimentary nutrient supply and shifted the diatom communities to those tolerant of low phosphorus levels, whereas at the millennial scale, diatom-inferred shifts in precipitation-evaporation based on conductivity optima and diatom life-form ratios were broadly similar to lake-level reconstructions from Lake Rukwa, Lake Malawi, and others in the region. Some fluctuations of Lake Massoko are consistent with the precession-driven changes in insolation, but the major climate shifts do not relate directly to orbital forcing of summer insolation south of the equator and show more consistency with records from the equatorial and northern tropics that receive rainfall from the passing of the intertropical convergence zone. Sea surface temperatures are strongly correlated to multimillennial-scale climate patterns over this region of Africa.

KW - LAST GLACIAL MAXIMUM

KW - EAST-AFRICA

KW - ENVIRONMENTAL-CHANGES

KW - SOUTHERN TROPICS

KW - LATE PLEISTOCENE

KW - WATER-BALANCE

KW - CRATER LAKE

KW - KYR BP

KW - POLLEN

KW - LEVEL

U2 - 10.1016/j.yqres.2003.07.001

DO - 10.1016/j.yqres.2003.07.001

M3 - Journal article

VL - 60

SP - 368

EP - 376

JO - Quaternary Research

JF - Quaternary Research

SN - 0033-5894

IS - 3

ER -