Atmospheric circulation patterns during late Pleistocene climate changes at Lake Malawi, Africa

Konecky, B. L.; Russell, James M.; Johnson, Thomas C.; Brown, E. T.; Berke, Melissa A.; Werne, Josef P.; Huang, Yongsong

doi:10.1016/j.epsl.2011.10.020

Cited by 83 publications

(75 citation statements)

References 60 publications

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“…Lake Malawi water levels are hence very susceptible to climatic changes, as was documented from recently obtained sediment cores Cohen et al, 2007). However, drops in lake level over the Holocene were presumably more moderate than the one during the Last Glacial Maximum when lake levels were ∼ 75-100 m below the current level (Konecky et al, 2011), which is corroborated by shoreline elevation constraints in core sediments . Hence, a reasonable estimate for lake level drops during the early Holocene low stands would be on the order of ten to several tens of meters.…”

Section: Paleolimnological Inferences On Lake Levelssupporting

confidence: 57%

Stratigraphy and paleoenvironments of the early to middle Holocene Chipalamawamba Beds (Malawi Basin, Africa)

et al. 2012

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Section: Paleolimnological Inferences On Lake Levelssupporting

confidence: 57%

Stratigraphy and paleoenvironments of the early to middle Holocene Chipalamawamba Beds (Malawi Basin, Africa)

et al. 2012

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“…(c) Lake Masoko low field magnetic susceptibility (10 −6 m 3 kg −1 ) (Garcin et al, 2006). (d) Lake Malawi C 28 δD (Konecky et al, 2011). (e) Lake Chilwa OSL dates of shoreline (Thomas et al, 2009).…”

Section: Regional Comparisonsmentioning

confidence: 99%

Three distinct Holocene intervals of stalagmite deposition and nondeposition revealed in NW Madagascar, and their paleoclimate implications

et al. 2017

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Abstract. Petrographic features, mineralogy, and stable isotopes from two stalagmites, ANJB-2 and MAJ-5, respectively from Anjohibe and Anjokipoty caves, allow distinction of three intervals of the Holocene in NW Madagascar. The Malagasy early Holocene (between ca. 9.8 and 7.8 ka) and late Holocene (after ca. 1.6 ka) intervals (MEHI and MLHI, respectively) record evidence of stalagmite deposition. The Malagasy middle Holocene interval (MMHI, between ca. 7.8 and 1.6 ka) is marked by a depositional hiatus of ca. 6500 years.Deposition of these stalagmites indicates that the two caves were sufficiently supplied with water to allow stalagmite formation. This suggests that the MEHI and MLHI intervals may have been comparatively wet in NW Madagascar. In contrast, the long-term depositional hiatus during the MMHI implies it was relatively drier than the MEHI and the MLHI.The alternating wet-dry-wet conditions during the Holocene may have been linked to the long-term migrations of the Intertropical Convergence Zone (ITCZ). When the ITCZ's mean position is farther south, NW Madagascar experiences wetter conditions, such as during the MEHI and MLHI, and when it moves north, NW Madagascar climate becomes drier, such as during the MMHI. A similar wetdry-wet succession during the Holocene has been reported in neighboring locations, such as southeastern Africa. Beyond these three subdivisions, the records also suggest wet conditions around the cold 8.2 ka event, suggesting a causal relationship. However, additional Southern Hemisphere highresolution data will be needed to confirm this.

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“…D wax measurements are therefore a valuable source of information about past changes in the isotopic composition of precipitation and provide important data on terrestrial hydroclimate change (Konecky et al, 2011;Lane et al, 2014;Schefuss et al, 2005;Tierney et al, 2008). Because plant waxes in lake sediment are derived from a large number of plants distributed across the catchment,…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Methods and future directions for paleoclimatology in the Maya Lowlands

Douglas

Brenner

Curtis

2016

Global and Planetary Change

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Atmospheric circulation patterns during late Pleistocene climate changes at Lake Malawi, Africa

Cited by 83 publications

References 60 publications

Stratigraphy and paleoenvironments of the early to middle Holocene Chipalamawamba Beds (Malawi Basin, Africa)

Stratigraphy and paleoenvironments of the early to middle Holocene Chipalamawamba Beds (Malawi Basin, Africa)

Three distinct Holocene intervals of stalagmite deposition and nondeposition revealed in NW Madagascar, and their paleoclimate implications

Methods and future directions for paleoclimatology in the Maya Lowlands

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