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100 _aSharma, Choudhurimayum Pankaj
_958877
245 _aHigh resolution climatic monsoonal variability reconstructed from a continuous ~2700 year sediment record from Northwest Himalaya Ladakh /
260 _bSage,
_c2020.
300 _aVol. 30, issue 3, 2020 ( 441–457 p.).
520 _aA chronologically well-constrained sedimentary archive from Upshi (Ladakh) was studied using a multi-proxy approach namely palynology, environmental magnetism, total organic carbon (TOC), total nitrogen (TN), stable isotopes of carbon and nitrogen providing a continuous vegetation, and paleoenvironmental history spanning the last ~2700 years with a temporal resolution of ~43 years. Pollen assemblage shows non-arboreal pollen (NAP) and non-pollen palynomorph (NPP) were dominant around the Upshi from ~2646 to 2431 cal. yr BP, indicating warmer conditions. Arboreal pollen (AP) and NAP gradually increased from 2431 to 1860 cal. yr BP in the study area, under warm and wet conditions, corresponding to the Roman Warm Period (RWP). This phase also witnessed enhanced sediment δ15N and χlf values. From ~1860 to ~1154 cal. yr BP increased Chenopodiaceae/Amaranthaceae and substantial spread of NPP suggest decreased temperature and prevalence of cold-dry climate. This period also records declining trends of χlf, δ15N, δ13Corg, TOC, and TN contents. From ~1154 to 293 cal. yr BP, the vegetation type reversed to mixed conifer and broad-leaved forest with significant increase in herbaceous taxa, rising δ15N, δ13Corg, TOC, and TN suggesting warm and wet conditions in the study area. This period broadly corresponds to the ‘Medieval Warm Period’ (MWP). Among all the proxies employed, depth profiles of TOC and TN (wt%) appear to respond best against external climate forcing showing remarkable correlation(s) with residual Δ14C in atmosphere, indicating dominance of intrinsic solar variability on regional climate/environment. The reconstructed recorded is well connected with established historical events and cultural activities of the Eurasian region.
700 _aRawat, Suman Lata
_958878
700 _aSrivastava, Pradeep
_958879
700 _aMeena, Narendra K
_958880
700 _aAgnihotri, Rajesh
_958881
700 _aKumar, Anil
_958882
700 _aChahal, Poonam
_958883
700 _aGahlaud, SKS
_958884
700 _aShukla, UK
_958885
773 0 _012756
_917200
_dLondon: Sage Publication Ltd, 2019.
_tHolocene/
_x09596836
856 _uhttps://doi.org/10.1177/0959683619887426
942 _2ddc
_cEJR
999 _c15039
_d15039