Limnology and modern sedimentation patterns in high altitude Tso Moriri Lake, NW Himalaya – implications for proxy development

Mishra, Praveen K.; Anoop, Ambili; Jehangir, Arshid; Prasad, Sushma; Menzel, Philip; Schettler, Georg; Naumann, Rudolf; Weise, Stephan M.; Andersen, Nils; Yousuf, A. R.; Gaye, Birgit

doi:10.1127/fal/2014/0664

Cited by 22 publications

(15 citation statements)

References 48 publications

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“…13.1 and 11.7 cal ka and highest ISM precipitation during the 11.2-8.5 cal ka (Mishra et al, 2015). Detailed geochemical, mineralogical and sedimentological analysis reveals that Tso Moriri witnessed several short-term fluctuations with seven major palaeohydrological stages since ∼26 cal ka (Mishra et al, 2014). Recently, the OSL dating of aeolian deposits, particularly the sand ramps of the Ladakh area suggest that the aggradations in valley occurred in three pulses, at ∼52, ∼28, and ∼16 ka, and these pulses broadly coincide with periods of stronger ISM (Kumar et al, 2017).…”

Section: Sedimentary Archives and Proxies For Palaeoclimatementioning

confidence: 95%

Late Quaternary Palaeoclimate and Contemporary Moisture Source to Extreme NW India: A Review on Present Understanding and Future Perspectives

Sharma¹,

Phartiyal²

2018

Front. Earth Sci.

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The trans-Himalayan region of NW India including the western part of Tibet, Karakoram, and Hindukush range host thousands of glaciers ensuring perennial freshwater supply to the Indian subcontinent and supports a large fraction of the global population. The peculiar physiography not only limits the entry of water enriched Indian Summer Monsoon winds to this region but also give passage to dry winds of barren desert of the Taklamakan, the Aksai Chin, and western Tibet, to qualify it as a cold desert. The Himalayan Orogen linked structural elements and the Quaternary glacial, and interglacial phases define the geomorphological setup of the region, which subsequently modified by the fluvial-lacustrine-aeolian processes. Over the years, our understanding in drawing climatic inferences from the sedimentary archives has improved significantly but the discrepancy in chronology, among and within different dating techniques, poses a serious challenge and therefore requires more work to address the issues. Similarly, till recently, it was argued that the major source of moisture to the Ladakh region is contributed from the Mediterranean Sea because the region falls under the rain shadow zone for the water-laden Indian summer monsoon winds. Our recent water isotopic study of upper Indus River Basin, however, emphasized that Indian summer monsoon source is also an equally important supplier. The present review highlights that the disturbed chronology and inadequate data support on moisture sources are two gap areas for further research.

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Section: Sedimentary Archives and Proxies For Palaeoclimatementioning

confidence: 95%

Late Quaternary Palaeoclimate and Contemporary Moisture Source to Extreme NW India: A Review on Present Understanding and Future Perspectives

Sharma¹,

Phartiyal²

2018

Front. Earth Sci.

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“…Tso Moriri Lake (Figures 1a and c) is a brackish water body situated in a high-altitude desert (32°40'-33°02'N, 78°14'-78°25'E; 4600m a.s.l.) in NW Himalaya (Leipe et al, 2014;Mishra et al, 2014Mishra et al, , 2015. The lake has a length of c. 22km (in N-S direction), with an average width of 5km and a surface area of~150km 2 (Mishra et al, 2014).…”

Section: Tso Moriri Lakementioning

confidence: 99%

“…An in-depth understanding of the environmental sensitivity of proxies is essential for interpreting the results of the performed statistical analyses (MRN and PCA). Detailed results on proxy significance have been published in Basavaiah et al (2014), Prasad et al (2014), Mishra et al (2014Mishra et al ( , 2015, and a summary is presented here. The lithogenic input reflects the precipitation amount and inflow energy, the catchment geology, and is also related to vegetation cover (Mishra et al, 2015).…”

Section: Climate Significance Of Investigated Proxiesmentioning

confidence: 99%

“…The lithogenic input reflects the precipitation amount and inflow energy, the catchment geology, and is also related to vegetation cover (Mishra et al, 2015). Changes in lithogenic distribution within the lake are indicative of hydrodynamic conditions during the sedimentation process (Mishra et al, 2014). Investigations on modern lake surface sediments indicate that in a large lake system like the Tso Moriri an increase (decrease) in lithogenic contribution reflects higher (lower) inflow into the lake (Mishra et al, 2014).…”

Section: Climate Significance Of Investigated Proxiesmentioning

confidence: 99%

“…We focus on 8.4ka of palaeoclimate data from two lakes located in different climate regions: the central Indian Lonar Lake from the core ISM zone (Gadgil, 2003) and the Tso Moriri Lake located in the high-altitude desert of the NW Himalaya which is influenced by the winter westerlies and peripherally by the ISM. Modern sediments from both the lakes have been investigated extensively for establishing proxy-climate linkages (Menzel et al, 2013;Basavaiah et al, 2014;Mishra et al, 2014;Riedel et al, 2015). We aim to (i) identify changes in proxy dynamical behaviour and their association with extreme climate events; (ii) detect links between specific proxies and climate processes (evaporation, precipitation) in different climate regions; (iii) differentiate between externally and internally forced regime shifts; (iv) assess regional differences in the impact of known climate forcings against the background of changes in solar insolation and northern hemisphere cooling; and (v) identify intervals when regimes shifts were frequent.…”

Section: Introductionmentioning

confidence: 99%

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Holocene climate forcings and lacustrine regime shifts in the Indian summer monsoon realm

Prasad

Marwan

Eroğlu

et al. 2020

Earth Surf Processes Landf

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Extreme climate events have been identified both in meteorological and long‐term proxy records from the Indian summer monsoon (ISM) realm. However, the potential of palaeoclimate data for understanding mechanisms triggering climate extremes over long time scales has not been fully exploited. A distinction between proxies indicating climate change, environment, and ecosystem shift is crucial for enabling a comparison with forcing mechanisms (e.g. El‐Niño Southern Oscillation). In this study we decouple these factors using data analysis techniques [multiplex recurrence network (MRN) and principal component analyses (PCA)] on multiproxy data from two lakes located in different climate regions – Lonar Lake (ISM dominated) and the high‐altitude Tso Moriri Lake (ISM and westerlies influenced). Our results indicate that (i) MRN analysis, an indicator of changing environmental conditions, is associated with droughts in regions with a single climate driver but provides ambiguous results in regions with multiple climate/environmental drivers; (ii) the lacustrine ecosystem was ‘less sensitive’ to forcings during the early Holocene wetter periods; (iii) archives in climate zones with a single climate driver were most sensitive to regime shifts; (iv) data analyses are successful in identifying the timing of onset of climate change, and distinguishing between extrinsic and intrinsic (lacustrine) regime shifts by comparison with forcing mechanisms. Our results enable development of conceptual models to explain links between forcings and regional climate change that can be tested in climate models to provide an improved understanding of the ISM dynamics and their impact on ecosystems. © 2020 John Wiley & Sons, Ltd.

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Testing and refinement of elemental proxies in tropical lakes from the Indian subcontinent

Mishra,

Jehangir,

Yousuf

et al. 2024

Earth Surf Processes Landf

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The conventional approach of using modern values of lake hydrochemistry and sediment composition as key parameters for identifying proxies for environmental reconstruction is complicated by regional climate, catchment geology, lake morphometry and anthropogenic input. In contrast to modern studies from lakes in the north‐temperate regions, reliable proxy indicators for past environmental change from tropical lake systems are still lacking. In this study, we compare new surface geochemical and mineralogical data from the Manasbal Lake, Kashmir (India), with other lakes situated in climatically and geomorphologically distinct regimes with varying degrees of pollution (Tso Moriri in north‐western Himalaya and Lonar in central India). We characterise external (e.g., geology and weathering), internal (e.g., lake water mixing and evaporation) factors and human activities influencing sediment composition and spatial distribution of proxies in each of these lakes to evaluate the usefulness of some of the commonly used proxies, as well as ascertain conditions where they might be applicable. Our results show that (i) morphometric parameters (such as lake size, water depth and catchment vs. lake area) variably influence the spatial distribution of sediments and proxies on the lake bottom highlighting the limitations of using single cores for long‐term palaeoclimate reconstruction; (ii) hydrochemical proxies (such as Na+/Na++Ca2+ and Mg/Ca) can delineate endogenic (Lonar and Tso Moriri lakes) versus allogenic (Manasbal Lake) influence on modern sediment characteristics; (iii) the compilation of heavy metal data (e.g., Fe, Zn, Mn, Cr and Ni) from all three lake basins with varying degrees of pollution highlights the limitations of using them to characterise weathering conditions in these basins; and (iv) human impact must be precluded before using the most promising endogenic minerals (calcite, aragonite, gypsum and pyrite) as palaeoenvironmental/palaeoclimate indicators.

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Limnology and modern sedimentation patterns in high altitude Tso Moriri Lake, NW Himalaya – implications for proxy development

Cited by 22 publications

References 48 publications

Late Quaternary Palaeoclimate and Contemporary Moisture Source to Extreme NW India: A Review on Present Understanding and Future Perspectives

Late Quaternary Palaeoclimate and Contemporary Moisture Source to Extreme NW India: A Review on Present Understanding and Future Perspectives

Holocene climate forcings and lacustrine regime shifts in the Indian summer monsoon realm

Testing and refinement of elemental proxies in tropical lakes from the Indian subcontinent

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