Tropical Indo-Pacific hydroclimate response to North Atlantic forcing during the last deglaciation as recorded by a speleothem from Sumatra, Indonesia

Wurtzel, J.B.; Abram, Nerilie J.; Lewis, Sophie C.; Bajo, Petra; Hellström, John; Troitzsch, Ulrike; Heslop, David

doi:10.1016/j.epsl.2018.04.001

Cited by 56 publications

(89 citation statements)

References 78 publications

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“…tively, which correlate within age uncertainties with two wet pulses in proxy records from Mawmluh Cave (Kathayat et al, 2018), Tangga Cave (Wurtzel et al, 2018), Makassar Strait (Tierney et al, 2012), Liang Luar Cave , KNI-51 Cave (Denniston et al, 2013) and Dante Cave (Railsback et al, 2018) (Fig. 4).…”

Section: Hydro-climate Variability Between 6 and 3 Ka At Rodriguesmentioning

confidence: 52%

“…5). In the eastern sector of the southern Indian Ocean, speleothem records from Tangga (Wurtzel et al, 2018), KNI-51 (Denniston et al, 2013) and Liang Luar (Griffiths et al, 2009) caves also show a shift to drier condition at approximately 4 ka (Fig. 4).…”

Section: Hydro-climate Variability Between 6 and 3 Ka At Rodriguesmentioning

confidence: 92%

“…In parallel with drier condition along the southern limit of the austral summer ITCZ, proxy records from Lake Edward (Russell et al, 2003), Lake Victoria (Berke et al, 2012) and Tangga Cave (Wurtzel et al, 2018), which are located near the northern limit of the contemporary austral summer ITCZ, also exhibit drier conditions. In contrast, records within the core location of the austral summer ITCZ, such as Lake Challa (Tierney et al, 2011), Lake Tanganyika (Tierney et al, 2008), Lake Malawi (Konecky et al, 2011) and Makassar Strait (Tierney et al, 2012), show either slightly wetter or virtually unchanged hydro-climatic conditions (Figs.…”

Section: Possible Mechanismsmentioning

confidence: 97%

“…3). During this time interval the LAVI-4 δ 13 C record shows two wet periods peaking at ∼ 4115 and 4015 yr BP, respec- (Kathayat et al, 2018), Tangga Cave, Sumatra (Indonesia; Wurtzel et al, 2018), δD leaf wax record from marine sediment core BJ8-03-70GGC in the Makassar Strait (Tierney et al, 2012), z-score-transformed speleothem δ 18 O records from Liang Luar Cave (western Flores, Indonesia; Griffiths et al, 2009), KNI-51 Cave (Kimberley, northwestern Australia; Denniston et al, 2013), La Vierge Cave (Rodrigues; this study) and Dante Cave (northeastern Namibia; Railsback et al, 2018). Shaded vertical bars mark periods of drier and wetter conditions.…”

Section: Hydro-climate Variability Between 6 and 3 Ka At Rodriguesmentioning

confidence: 97%

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Hydro-climatic variability in the southwestern Indian Ocean between 6000 and 3000 years ago

Li¹,

Cheng

Sinha

et al. 2018

Clim. Past

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Abstract. The “4.2 ka event” is frequently described as a major global climate anomaly between 4.2 and 3.9 ka, which defines the beginning of the current Meghalayan age in the Holocene epoch. The “event” has been disproportionately reported from proxy records from the Northern Hemisphere, but its climatic manifestation remains much less clear in the Southern Hemisphere. Here, we present highly resolved and chronologically well-constrained speleothem oxygen and carbon isotopes records between ∼6 and 3 ka from Rodrigues Island in the southwestern subtropical Indian Ocean, located ∼600 km east of Mauritius. Our records show that the 4.2 ka event did not manifest itself as a period of major climate change at Rodrigues Island in the context of our record's length. Instead, we find evidence for a multi-centennial drought that occurred near-continuously between 3.9 and 3.5 ka and temporally coincided with climate change throughout the Southern Hemisphere.

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Section: Hydro-climate Variability Between 6 and 3 Ka At Rodriguesmentioning

confidence: 52%

Section: Hydro-climate Variability Between 6 and 3 Ka At Rodriguesmentioning

confidence: 92%

Section: Possible Mechanismsmentioning

confidence: 97%

Section: Hydro-climate Variability Between 6 and 3 Ka At Rodriguesmentioning

confidence: 97%

See 2 more Smart Citations

Hydro-climatic variability in the southwestern Indian Ocean between 6000 and 3000 years ago

Li¹,

Cheng

Sinha

et al. 2018

Clim. Past

View full text Add to dashboard Cite

show abstract

“…Aridification after ca. 4200 years ago in a series of sensitive records from southern East Africa to Australia (Berke et al, 2012;de Boer et al, 2014;Denniston et al, 2013;Li et al, 2018;Russell et al, 2003;Schefuss et al, 2011;Wurtzel et al, 2018) argue for a narrowing of the ITCZ migration belt during ENA within and around the Indian Ocean domain (Li et al, 2018).…”

Section: Winter Monsoon Variability In the Neoglacialmentioning

confidence: 99%

Neoglacial climate anomalies and the Harappan metamorphosis

et al. 2018

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Climate exerted constraints on the growth and decline of past human societies but our knowledge of temporal and spatial climatic patterns is often too restricted to address causal connections. At a global scale, the inter-hemispheric thermal balance provides an emergent framework for understanding regional Holocene climate variability. As the thermal balance adjusted to gradual changes in the seasonality of insolation, the Intertropical Convergence Zone migrated southward accompanied by a weakening of the Indian summer monsoon. Superimposed on this trend, anomalies such as the Little Ice Age point to asymmetric changes in the extratropics of either hemisphere. Here we present a reconstruction of the Indian winter monsoon in the Arabian Sea for the last 6000 years based on paleobiological records in sediments from the continental margin of Pakistan at two levels of ecological complexity: sedimentary ancient DNA reflecting water column environmental states and planktonic foraminifers sensitive to winter conditions. We show that strong winter monsoons between ca. 4500 and 3000 years ago occurred during a period characterized by a series of weak interhemispheric temperature contrast intervals, which we identify as the early neoglacial anomalies (ENA). The strong winter monsoons during ENA were accompanied by changes in wind and precipitation patterns that are particularly evident across the eastern Northern Hemisphere and tropics. This coordinated climate reorganization may have helped trigger the metamorphosis of the urban Harappan civilization into a rural society through a push-pull migration from summer flood-deficient river valleys to the Himalayan piedmont plains with augmented winter rains. The decline in the winter monsoon between 3300 and 3000 years ago at the end of ENA could have played a role in the demise of the rural late Harappans during that time as the first Iron Age culture established itself on the Ghaggar-Hakra interfluve. Finally, we speculate that time-transgressive land cover changes due to aridification of the tropics may have led to a generalized instability of the global climate during ENA at the transition from the warmer Holocene thermal maximum

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Mechanisms and impacts of enhanced rainfall over large islands in the Maritime Continent during the mid-holocene

Djamil,

Yuan,

Lestari

et al. 2023

Clim Dyn

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Tropical Indo-Pacific hydroclimate response to North Atlantic forcing during the last deglaciation as recorded by a speleothem from Sumatra, Indonesia

Cited by 56 publications

References 78 publications

Hydro-climatic variability in the southwestern Indian Ocean between 6000 and 3000 years ago

Hydro-climatic variability in the southwestern Indian Ocean between 6000 and 3000 years ago

Neoglacial climate anomalies and the Harappan metamorphosis

Mechanisms and impacts of enhanced rainfall over large islands in the Maritime Continent during the mid-holocene

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