Reconstructing climate variability during the last four millennia from trans-Himalaya (Ladakh-Karakoram, India) using multiple proxies

Phartiyal, Binita; Singh, Randheer; Nag, Debarati; Sharma, Anupam; Agnihotri, Rajesh; Prasad, Vandana; PingYao,; Karthick, Balasubramanian; Joshi, Priyanka; Gahlaud, S. K. S.; Thakur, Biswajeet

doi:10.1016/j.palaeo.2020.110142

Cited by 23 publications

(10 citation statements)

References 51 publications

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“…years BP from Khangok-Padam, Zanskar Valley as inferred from the multiproxy data show a synchrony with other regional studies from the Indian subcontinent (Fig. 6; Kotlia et al, 2015;Bali et al, 2017;Phadtare, 2000;Phartiyal et al, 2020;2021a, b). Orbitally modulated change in solar radiation can cause large temperature gradient in the northern continent that results in shift of the Inter Tropical Convergence Zone (ITCZ) and the subtropical jet.…”

Section: Discussionsupporting

confidence: 79%

“…Based on δ 13 C, TOC and pollen data, Rawat et al (2015) have also inferred moderate ISM (punctuated by a wet spell) during the late Holocene in the climatologically similar Chandra Valley. The gradually improving hydroclimatic during the later part of the Holocene have also been reported in a number of studies from the adjoining valleys in Ladakh (Ali et al, 2020;Joshi et al, 2021;Phartiyal et al, 2020;2021a;Fig. 6).…”

Section: Discussionsupporting

confidence: 55%

“…The sand percentage is higher, and the silt content also show increasing trend, implying enhanced hydroclimatic conditions. Improving hydroclimatic conditions in the Ladakh region have been reported in a number of studies (Ali et al, 2020;Joshi et al, 2021;Phartiyal et al, 2020;2021a). Besides the Ladakh Himalaya, records of improving hydroclimatic conditions during the last ~500 cal.…”

Section: Discussionmentioning

confidence: 85%

“…However, the amplitude of such climatic variations during the Holocene is relatively small because the boundary condition of climate system did not change much (Petit et al, 1999). Previous research from the Indian subcontinent revealed a strengthening of the monsoon during the early Holocene Period, but the pattern of mid-to late Holocene monsoon variability is still unclear and often suffers from age uncertainties (Prasad et al, 2014;Mishra et al, 2015;Sharma & Phartiyal, 2018;Banerji et al, 2020;Phartiyal et al, 2021a).…”

Section: Introductionmentioning

confidence: 98%

“…In a range of spatial scales, different proxies, reflect varying impact of environmental factors and display varying strengths, limitations, and responses, therefore multi-proxy studies are desirable, as they will better reflect local to regional climatic conditions (Kathayat et al, 2017;Srivastava et al, 2018;Ali et al, 2020;Phartiyal et al, 2020). Palaeoenvironmental and palaeoclimatic reconstructions on lake sediments and the organic matter contained in it have generally been used in the Himalayan region, especially for alpine lake where organic matter could well represent the environment and climate fluctuations (Rawat et al, 2015;Phartiyal et al, 2020;2021a). Hence with the above facts in view, we sampled a relict morainal lake deposit at Khangok, located south-east of the Padam Village, Zanskar Valley (transitional zone between ISM and Westerlies), with an objective to understand the spatial structure of mid-late Holocene climate changes and try to reveal the factors that are responsible for the sub-millennial scale climate variability.…”

Section: Introductionmentioning

confidence: 99%

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Palaeoclimatic variability during last eight millennia from a morainal lake in Zanskar, northwest Himalaya, India

Phartiyal¹,

Ali²,

Sharma³

et al. 2022

JPS

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Centennial–scale palaeoenvironmental variability has been deduced during past eight millennia using multi–proxy study (textural analysis, environmental magnetic parameters, stable carbon isotopes, palynofacies and elemental concentration), from Khangok–Padam in Zanskar Valley, northwest Himalaya. The multi–proxy record from this morainal lake spanning last ~8200 cal years BP has revealed four hydroclimatic phases. The overall progressively improving hydroclimatic trend is indicated by multi proxy study: sediment size/texture (as a proxy for the energy condition and depositional environment), mineral magnetism (proxy for sediment flux or lithogenic input and lithologic variation), carbon isotope signature (δ13Corg) preserved in organic constituents of sediments (a proxy for palaeovegetation and climate change), elemental geochemistry (proxy for weathering and erosion) and selected samples for palynofacies data (a proxy for changes in biological organic matter). This improving hydroclimatic trend is however punctuated by an abrupt wet spell at ~6200–5200 cal years BP and relatively drier climate during the Little Ice Age between 1400 and 1900 CE. The main driving force implicated for the changes are seen to be the solar output variations. The area lying in a transitional climatic zone of NW Himalaya shows no emphatic record of the events like the 4200 cal. years BP, 2600 cal. years BP and Holocene Climatic Optima. Contrary to the earlier studies in the region (e.g., Tsokar and TsoMorari), our results show an improving hydroclimatic condition in this transition climatic zone between the Indian Summer Monsoon dominated Higher and westerly dominated Trans Himalaya.

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Section: Discussionsupporting

confidence: 79%

Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Palaeoclimatic variability during last eight millennia from a morainal lake in Zanskar, northwest Himalaya, India

Phartiyal¹,

Ali²,

Sharma³

et al. 2022

JPS

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Mid–late Holocene palaeoclimate and biogeochemical evolution of Wular Lake, Kashmir Valley, India

Shah,

Rahman,

Yadava

et al. 2023

J Quaternary Science

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Continuous multiproxy data were generated to understand the mid–late Holocene palaeoenvironmental history of the Kashmir Valley and the biogeochemistry of Wular Lake, India. For this purpose, geochemical and stable isotopic analyses were carried out on sediment samples retrieved from a 160 cm long trench excavated on the eastern bank of Wular Lake located in the Union Territory of Jammu and Kashmir, India. The chronology of the sediment strata developed using 14C dating by accelerator mass spectrometry covered the last ~5600 yr bp. Our results indicated the occurrence of an extended dry climate phase from 4600 to 3800 yr bp, which coincided with the widely recognised Meghalayan Stage, when major civilisations like the Harappa and the Akkadian were known to collapse. The lake biogeochemistry revealed dominance of the emergent macrophytes during this stage. Another dry phase was observed between 3100 and 2200 yr bp. This dry phase peaked at around 2900 yr bp, coinciding with Bond Event 2. Wular Lake faced nutrient limitation due to low runoff around 2500 yr bp caused by the persistent dry and cold climate. Geochemical signatures revealed that anthropogenic activities during the last two millennia might have significantly influenced erosion in the catchment area.

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Spatial–temporal heterogeneity in a small lake and its implication for paleoclimate reconstruction

et al. 2021

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Reconstructing climate variability during the last four millennia from trans-Himalaya (Ladakh-Karakoram, India) using multiple proxies

Cited by 23 publications

References 51 publications

Palaeoclimatic variability during last eight millennia from a morainal lake in Zanskar, northwest Himalaya, India

Palaeoclimatic variability during last eight millennia from a morainal lake in Zanskar, northwest Himalaya, India

Mid–late Holocene palaeoclimate and biogeochemical evolution of Wular Lake, Kashmir Valley, India

Spatial–temporal heterogeneity in a small lake and its implication for paleoclimate reconstruction

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