Factors governing the pattern of glacier advances since the Last Glacial Maxima in the transitional climate zone of the Southern Zanskar Ranges, NW Himalaya

Sharma, Shubhra; Shukla, A. D.

doi:10.1016/j.quascirev.2018.10.006

Cited by 33 publications

(21 citation statements)

References 96 publications

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“…This dry phase is in accordance with the youngest Southern Zanskar Glacial Stage (SZS-1; Sharma and Shukla, 2018;) that occurred after 6.3 ka and before 5.1 ka in the Zanskar Valley and has been attributed to an overall weakened ISM (Wünnemann et al, 2010;Bhushan et al, 2018;Sharma and Shukla, 2018). The SZS-1 glacial advance has been attributed to millennial-scale cooling events (Sharma and Shukla, 2018). Based on the changes in the pollen spectra, reduced local pollen production, and increasing scores of desert and decreasing scores of tundra revealed in the biome reconstruction, a reduction in moisture availability after ∼6200 cal yr BP is indicated from the Tso Moriri lake Leipe, Demske, Tarasov, Wünnemann, et al, 2014).…”

Section: Mid-late Northgrippian (∼6200-4500 Cal Yr Bp)supporting

confidence: 76%

“…On the basis of δ 13 C values, Rb/Sr ratio, low TOC, LOI, and sand (%), our study indicates a stable but relatively dry climate during the mid-late Northgrippian (∼6200-4500 cal yr BP). This dry phase is in accordance with the youngest Southern Zanskar Glacial Stage (SZS-1; Sharma and Shukla, 2018;) that occurred after 6.3 ka and before 5.1 ka in the Zanskar Valley and has been attributed to an overall weakened ISM (Wünnemann et al, 2010;Bhushan et al, 2018;Sharma and Shukla, 2018). The SZS-1 glacial advance has been attributed to millennial-scale cooling events (Sharma and Shukla, 2018).…”

Section: Mid-late Northgrippian (∼6200-4500 Cal Yr Bp)supporting

confidence: 74%

“…1) is located in the transitional zone between the ISM-dominated southern Himalaya and the mid-latitude westerly–dominated northern region. The moisture availability of this valley is regulated by a complex interplay of these two different weather and atmospheric circulation systems (Mayewski et al, 1984; Bothe et al, 2011; Lee et al, 2014; Ali et al, 2018; Sharma and Shukla, 2018). A 17-yr ice-core data set from the Sentik glacier (Nun-Kun; Zanskar Valley), which is located towards the northwestern side of the study area and forms the northern fringe of the Higher Himalaya in the Suru Valley, indicates dominance of the ISM (Mayewski et al, 1984).…”

Section: Introductionmentioning

confidence: 99%

“…(a) The regional setup of the area along with the trajectories of weather systems—the summer monsoon and the mid-latitude westerlies. The white dots show important terrestrial palaeoclimatic sites that have been discussed in this paper including (1) the Penzi-la (yellow circle; present study), (2) Ali et al, 2018, (3) Bhushan et al, 2018, (4) Srivastava et al, 2018, (5) Rühland et al, 2006, (6) Kotlia and Joshi, 2013, (7) Sanwal et al, 2013, (8) Bali et al, 2017, (9) Rawat et al, 2015, (10) Sinha et al, 2007, (11) Wünnemann et al, 2010, (12) Mishra et al, 2015, (13) Leipe, Demske, and Tarasov, 2014, (14) Kotlia et al, 2015, (15) Sharma et al, 2018, (16) Sharma and Shukla, 2018, (17) Ganju et al, 2018, (18) Lee et al, 2014, (19) Kumar et al, 2019, (20) Sarkar et al, 2015, (21) Kumar et al, 2019, (22) Kathayat et al, 2017, (23) Dixit et al, 2014, (24) Dixit et al, 2018, (25) Dutt et al, 2015, (26) Prasad et al, 2014, and (27) Rühland et al, 2006. (b) The cumulative annual rainfall (mm) map of the western Himalaya (after Juyal, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Holocene hydroclimatic variability in the Zanskar Valley, Northwestern Himalaya, India

et al. 2020

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A 1.3-m-long sediment core from the Penzi-la pass, Zanskar Valley, provides a record of hydroclimatic conditions and abrupt climate changes over short time scales since the mid-Holocene. These climatic changes of centennial time scale are crucial to understanding the hydroclimatic variability in northwestern (NW) Himalaya. Relatively higher δ13C values complemented by total organic carbon, loss on ignition, grain size parameters, and lower Rubidium/Strontium ratios during the Late Northgrippian imply that the area had a dry climate during the period from ~6200–4500 cal yr BP. Subsequently, a relatively stable hydroclimatic environment was experienced between ~4500 and 3400 cal yr BP. After ~3400 cal yr BP the multiproxy data show gradual strengthening of hydroclimatic conditions, however, this trend is interrupted by high-amplitude abrupt reversals (dry events) with a stepwise decreasing intensity at ~3300, 2600, 1700, and 400 cal yr BP. The two most important climatic events of the last millennia (i.e., Medieval Climate Anomaly and the Little Ice Age) were also recorded from the sedimentary archive. Overall, our data show a progressive increase in the moisture availability in the Zanskar Valley and are in agreement with the late Holocene climatic trends of central and western Himalaya.

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Section: Mid-late Northgrippian (∼6200-4500 Cal Yr Bp)supporting

confidence: 76%

Section: Mid-late Northgrippian (∼6200-4500 Cal Yr Bp)supporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Holocene hydroclimatic variability in the Zanskar Valley, Northwestern Himalaya, India

et al. 2020

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“…Deshkit-1 and Pangong-1 glacial stages are dated to ~46 ka, Ladakh-2 glacial stage to ~20 ka (MIS-2), Ladakh-1 stage to ~13.9 ka, and Ladakh cirque and Pangong cirque stages to ~1.7 and ~0.4 ka, respectively (Owen et al, 2006;Dortch et al, 2010Dortch et al, , 2013. In the Zanskar Range, evidence for four glacier advances was found (Sharma and Shukla, 2018). The oldest stage (SZS-4) was equivalent to MIS-4, while SZS-3 occurred during LGM, and SZS-2 during a post-LGM glacial period (15.7-14.3 ka).…”

Section: Past Glacial Cyclesmentioning

confidence: 99%

Evolution of arid landscape in India and likely impact of future climate change

Kumar

2020

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Thar Desert and Ladakh are two prominent arid areas in the Indian Subcontinent, representing the hot and the cold arid regions, respectively. Landforms in Thar Desert have developed over a relatively stable platform, and bear strong impressions of several cycles of late Quaternary climate change between warm wet and dry cool phases, which dictated the spatiotemporal distribution of the fluvial and aeolian processes and the typical disposition of the landforms. By contrast, Ladakh, located in the Trans-Himalaya, is mountainous and dominated by glacial, periglacial and fluvial processes, with fewer signatures of lacustrine and aeolian processes. Since ~44 ka, the area witnessed two major and one minor phases of aridity. Evidence for neotectonic, though expected very much in this suture zone between the Indian and the Eurasian plates, is not very common, and need proper investigation. Presently anthropogenic activities tend to have overbearing influences on the process acceleration and land degradation in both Thar Desert and Ladakh. Since warming-related changes in climate have also started to impact the areas, sustainable land uses, backed up by land conservation measures are called for.

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