TY - JOUR A1 - Mishra, Praveen Kumar A1 - Anoop, Ambili A1 - Schettler, Georg A1 - Prasad, Sushma A1 - Jehangir, Arshid A1 - Menzel, Peter A1 - Naumann, Rudolf A1 - Yousuf, A. R. A1 - Basavaiah, Nathani A1 - Deenadayalan, Kannan A1 - Wiesner, Martin G. A1 - Gaye, Birgit T1 - Reconstructed late Quaternary hydrological changes from Lake Tso Moriri, NW Himalaya JF - Quaternary international : the journal of the International Union for Quaternary Research N2 - We present the results of our investigations on the radiocarbon dated core sediments from the Lake Tso Moriri, NW Himalaya aimed at reconstructing palaeohydrological changes in this climatically sensitive region. Based on the detailed geochemical, mineralogical and sedimentological analysis, we recognise several short-term fluctuations superimposed upon seven major palaeohydrological stages identified in this lake since similar to 26 cal ka. Stage I (>20.2 cal ka): shallow lake characterised by input of coarse-grained detrital sediments; Stage II (20.2-16.4 cal ka): lake deepening and intensification of this trend ca. 18 cal ka; Stage III (16.4-11.2 cal ka): rising lake levels with a short term wet phase (13.1-11.7 cal ka); Stage IV (11.2-8.5 cal ka): early Holocene hydrological maxima and highest lake levels inferred to have resulted from early Holocene Indian monsoon intensification, as records from central Asia indicate weaker westerlies during this interval; Stage V (8.5-5.5 cal ka): mid-Holocene climate deterioration; Stage VI (5.5-2.7 cal ka): progressive lowering of lake level; Stage VII (2.7-0 cal ka): onset of modern conditions. The reconstructed hydrological variability in Lake Tso Moriri is governed by temperature changes (meltwater inflow) and monsoon precipitation (increased runoff). A regional comparison shows considerable differences with other palaeorecords from peninsular India during late Holocene. (C) 2014 Elsevier Ltd and INQUA. All rights reserved. KW - Authigenic carbonates KW - Holocene KW - Indian summer monsoon KW - Lake sediments KW - Tso Moriri Lake KW - Westerlies Y1 - 2015 U6 - https://doi.org/10.1016/j.quaint.2014.11.040 SN - 1040-6182 SN - 1873-4553 VL - 371 SP - 76 EP - 86 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Mishra, Praveen Kumar A1 - Prasad, Sushma A1 - Jehangir, Arshid A1 - Anoop, Ambili A1 - Yousuf, Abdul R. A1 - Gaye, Birgit T1 - Investigating the role of meltwater versus precipitation seasonality in abrupt lake-level rise in the high-altitude Tso Moriri Lake (India) JF - Palaeogeography, palaeoclimatology, palaeoecology : an international journal for the geo-sciences N2 - We present late Quaternary lake level reconstruction from the high altitude Tso Moriri Lake (NW Indian Himalaya) using a combination of new and published data from shallow and deep water cores, and catchment geomorphology. Our reconstruction indicates two dramatic lake level increases - a late glacial (ca. 16.4-12.6 cal kyr B.P.) rise of 65 m, and a 47 m rise during the early Holocene wet phase (ca. 11.2-8.5 cal kyr B.P.) which are separated by the Younger Dryas (YD) event. We decouple the role of precipitation seasonality and snow melt using a combination of proxies sensitive to the Indian Summer Monsoon (ISM), and a regional spatio-temporal transect that provides information on the eastward penetration of the winter westerlies. A comparison of shallow and deep water cores shows that (i) the first lake level increase (similar to 65 m, ca. 16.4-12.6 cal kyr B.P.) is caused by melt water inflow triggered by the increasing summer insolation; (ii) the second lake level increase (similar to 47 m, 11.2-8.5 cal kyr B.P.) is largely caused by a rise in annual precipitation coupled with reduced summer evaporation; (iii) in contrast to the onset of ISM (Bay of Bengal branch) at ca. 14.7 ka in lower elevations in NE India, the hydroclimatic influence of ISM in the high altitude Himalaya is seen only between 12.7 and 12 cal kyr B.P., though the influence of solar insolation (via increased snowmelt) is visible from 16.4 cal kyr B.P. onwards; (iv) the eastward penetration of westerlies in Indian Himalayas is strongly influenced by the strength of the Siberian High. KW - Indian Summer Monsoon KW - Westerlies KW - Lake level reconstruction KW - Endogenic carbonates Y1 - 2018 U6 - https://doi.org/10.1016/j.palaeo.2017.12.026 SN - 0031-0182 SN - 1872-616X VL - 493 SP - 20 EP - 29 PB - Elsevier CY - Amsterdam ER -