Precipitation variability in the Indian Central Himalaya during last ca. 4,000 years inferred from a speleothem record: Impact of Indian Summer Monsoon (ISM) and Westerlies

Kotlia, Bahadur Singh; Singh, Anoop; Joshi, L. M.; Dhaila, Bachi Singh

doi:10.1016/j.quaint.2014.10.066

Cited by 134 publications

(87 citation statements)

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“…Further, precisely dated stalagmite based multi-decadal records are rare through the Late Pleistocene-Holocene transition [42] although δ 18 O precipitation variability during Middle to Late Holocene has been obtained through U/Th dated speleothems [21,22,43,44]. The present study forms the foremost speleothem research in the NW Himalaya.…”

Section: Introductionmentioning

confidence: 75%

“…The present study forms the foremost speleothem research in the NW Himalaya. We may mention here that the speleothem inferred climatic variability from the locations dominated by the ISM [16,20,45,46] and the East Asian Summer Monsoon (EASM) [47,48] has been well established but, as mentioned above, these also may not be precisely correlated with the Himalayan palaeoclimatic records [21,22].…”

Section: Introductionmentioning

confidence: 94%

“…11.0 ka BP onwards. Since the O values (~3.5%) is somewhat higher than in the ISM dominated sites in the Peninsular India [22]. Since the values for both isotopes show fluctuations, we preferred to take average values (-7% for δ 18 O and -9.2% for δ 13 C) as reference points which may correspond to the consistent interpretation for average climatic pattern during which the stalagmite was formed.…”

Section: Stalagmite Mineralogy and Growth Ratementioning

confidence: 99%

“…It has been anticipated that the above records cannot be precisely correlated with the Himalayan records because of the additional role of Westerlies (in addition to the ISM) in the Himalaya [21,22]. The Himalayan region mainly experiences two seasons, i.e., summer and winter.…”

Section: Introductionmentioning

confidence: 99%

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Stalagmite Inferred High Resolution Climatic Changes through Pleistocene-Holocene Transition in Northwest Indian Himalaya

Kotlia

Singh

Sanwal

et al. 2016

J Earth Sci Clim Change

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Investigated for d 18 O and d 13 C isotopes, mineralogy and growth rate, a 20 cm long and 230Th-dated calcite stalagmite from Kalakot (Jammu and Kashmir Himalaya), has recorded high resolution precipitation variability during the Pleistocene-Holocene transition. At present, the study area is influenced by both the Indian Summer Monsoon (ISM) and Westerlies. The StalAge model indicates that the stalagmite grew between 16.3 ka to 9.5 ka BP under the ideal isotopic equilibrium conditions as revealed by the Hendy test results. The d18 O and d 13 C values range from -5.41 to -8.82% and -7.09 to -10.84% respectively. Although the U/Th chronology is poor due to low Uranium content in the samples resulting in relatively large errors, the first stalagmite inferred precipitation variability reconstructed from NW Indian Himalaya makes this study significant. The near footprints of three global events, e.g., Older Dryas (OD), Allerød period and Younger Drays (YD) can be noticed at ~14.3-13.9, 13.9-12.7 and 12.7-12.2 ka BP. The precipitation strength was weaker during the OD and YD, but was stronger during the Allerød interstadial. By the termination of YD interval, the climate seems fluctuating in the NW Himalaya. There seems variation in commencement, duration and termination of the above mentioned events in different parts of the globe due to latitude location and response time.

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Section: Introductionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 94%

Section: Stalagmite Mineralogy and Growth Ratementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Stalagmite Inferred High Resolution Climatic Changes through Pleistocene-Holocene Transition in Northwest Indian Himalaya

Kotlia

Singh

Sanwal

et al. 2016

J Earth Sci Clim Change

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“…A weaker monsoon should bring less precipitation across the Asian mainland. However, the data are ambiguous with much recent evidence suggesting wetter conditions during at least certain episodes of the LIA in Nepal (Denniston et al, 2000), northern India (Rühland et al, 2006;Kotlia et al, 2012Kotlia et al, , 2014Duan et al, 2013;Sanwal et al, 2013), and southern China (Chu et al, 2002;Chen et al, 2005) as well as northwestern China (Chen et al, 2009). However, no high-magnitude flood deposits have been identified in the six large rivers crossing central and western India suggesting that there was no really intense precipitation at this time and in fact that the conditions were probably drier from the 14th to the 19th centuries (Kale and Baker, 2006).…”

Section: Introductionmentioning

confidence: 95%

Panigarh cave stalagmite evidence of climate change in the Indian Central Himalaya since AD 1256: Monsoon breaks and winter southern jet depressions

Liang

Brook

Kotlia

et al. 2015

Quaternary Science Reviews

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Hydroclimate variability during the last two millennia from the mudflats of Diu Island, Western India

et al. 2021

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The climate variability over western India has been significantly influenced by the perturbations in the Indian summer monsoon (ISM) and thus, provides a crucial platform to investigate the paleomonsoon variations, weathering intensity, and sediment source. The mudflats of southern Saurashtra, western India are deprived of perennial rivers, but the region receives terrestrial contribution exclusively due to activation of seasonal rivers during the monsoon. In the present study, an attempt has been made to investigate the paleomonsoon and palaeoweathering using various geochemical proxies (detrital, productivity, redox, and weathering) on the mudflat sediment core of southern Saurashtra, western Gujarat. The core is chronologically constrained by 14 C, 210 Pb, and 137 Cs dating techniques. The study suggests ISM strengthening during 2000-1800 cal yr BP with intermittent marginal ISM weakening during 1950-1970 cal yr BP and 1930-1890 cal yr BP associated with the reduced solar irradiance. Further, ISM weakening has been invoked during Dark Age Cold period (1800-1300 cal yr BP) and Little Ice Age (800-200 cal yr BP) interrupted by a marginal ISM strengthening during Medieval Warm period and the last two centuries witness climate warming. Based on historical rainfall data and Al 2 O 3, an intermittent strengthening of ISM during 90-30 cal yr BP has been suggested while a gradual increase in the weathering intensity synchronous to the rise in sea surface temperature (SST) during the last 200 cal yr BP revealed the role of temperature on the intensity of chemical weathering in the study area. In spite of changes in the geochemical proxies as a function of ISM fluctuations, the palaeoweathering intensities has remained nearly consistent wherein the chemical weathering was less operative and accompanied by the deposition of texturally immature sediments. The sediments of Diu mudflat indicate mafic signatures thereby underscoring a major contribution of the Deccan basalts along with other variable sources.

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Precipitation variability in the Indian Central Himalaya during last ca. 4,000 years inferred from a speleothem record: Impact of Indian Summer Monsoon (ISM) and Westerlies

Cited by 134 publications

References 104 publications

Stalagmite Inferred High Resolution Climatic Changes through Pleistocene-Holocene Transition in Northwest Indian Himalaya

Stalagmite Inferred High Resolution Climatic Changes through Pleistocene-Holocene Transition in Northwest Indian Himalaya

Panigarh cave stalagmite evidence of climate change in the Indian Central Himalaya since AD 1256: Monsoon breaks and winter southern jet depressions

Hydroclimate variability during the last two millennia from the mudflats of Diu Island, Western India

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