Holocene palaeoenvironmental records from the high-altitude Wular Lake, Western Himalayas

Abstract

We present a comprehensive record of Holocene (11,590–628 cal. yr BP) climate and hydrographic changes around the Wular Lake located in Kashmir Valley, India. Based on the multi-proxy investigations, we have identified three phases of wet climate conditions that prevailed from the commencement of the Holocene Epoch – 9000 cal. yr BP, 8100–6650 cal. yr BP and 6350–5000 cal. yr BP, whereas periods of dry climate were observed during 9000–8100 cal. yr BP, 6650–6350 cal. yr BP and ~5000 to 4000 cal. yr BP. The results also suggested that the lake widened and deepened significantly around 6350–5000 cal. yr BP. The results indicated desiccation and the exposure of the lake margin around 5000–4500 cal. yr BP. The sedimentation rate since 4500–628 cal. yr BP was quite low for detailed paleoclimate interpretations. Oscillations in lake extension and deepening appear to be due to changing intensity of westerly moisture in the region, and we correlate several of the low lake-level phases to the Bond events caused by North Atlantic ice rafting events.

Multi—Proxy Reconstructions of Climate Change and Human Impacts Over the Past 7000 Years From an Archive of Continental Shelf Sediments off Eastern Hainan Island, China

“…The distinct variations in these records suggest a rapid climatic deterioration, which was likely associated with abrupt changes in the Asian summer monsoon. This abrupt climatic event generally coincides with a dramatic weakening of the summer monsoon at 5,400-4,900 cal yr BP, as inferred from various paleoclimate records from monsoonal regions elsewhere (Dykoski et al, 2005;Strong et al, 2013;Huang et al, 2019;Shah et al, 2020).…”

High‐Resolution Elemental Record From the Holocene Sediments of an Alpine Lake in the Central Altai Mountains: Implications for Arctic Sea‐Ice Variations

“…Generally, the interpretation of Rb/Sr ratio in hydrologically open lake is in contrast to that in hydrologically closed lakes. In a hydrologically open lake, higher sedimentary Rb/Sr ratio can reasonably indicate intense chemical weathering in the lake catchment (e.g., Fan et al., 2021; Shah et al., 2020). In a hydrologically closed lake, it should be careful because evaporation process may play an important role.…”

Inter-University Accelerator Centre, New Delhi (Iuacd) Radiocarbon Date List Ii

“…Using radiocarbon dates, satellite imagery, shuttle radar topography mission data and optically stimulated luminescence dates, submitters identified the paleo path of ancient river (Saraswati) and also conclude that there was flow of water through this channel until AD 1402 (Chaudhri et al 2021). Twelve radiocarbon dates given blow (except for samples IUACD#17C1274 and IUACD#17C1275) were used for this study (Chaudhri et al 2021) Sediment and shell samples from different sites were submitted by Prof. Hema Achyuthan, Anna University, Chennai, India (Lone et al 2020;Shah et al 2020Shah et al , 2021.…”