Holocene variation in the Indian Summer Monsoon modulated by the tropical Indian Ocean sea-surface temperature mode

Cui, Kai; Wang, Yongbo; Liu, Xingqi; Shen, Jian; Wang, Yong

doi:10.1016/j.catena.2022.106302

Cited by 8 publications

(2 citation statements)

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“…The variations in major elements preserved in lake sediments are widely used to provide environmental information such as the sedimentation process and catchment dynamics (Davies et al, 2015). In general, Fe, Ti, Rb, and Zr are indicators of detrital elements hosted by resistant minerals, owning geochemical stability (Boës et al, 2011; Cui et al, 2022; Yang et al, 2020). They are mostly transported into a lake through surface erosion within the catchment (Cohen, 2004; Engstrom and Wright, 1984).…”

Section: Resultsmentioning

confidence: 99%

“…Accordingly, instead of terrestrial carbonate, Ca and Sr in this sediment core are deduced as carbonate minerals precipitated within lake water (Dellwig et al, 2000; Heymann et al, 2013; Jia and Liu, 2019). The values of Ca and Sr are related closely to fluctuations in lake level which affect carbonate concentrations inside the lake (Bajard et al, 2015; Cui et al, 2022). Decreased lake water level or an enclosed lake may increase the concentration of Ca and Sr ions, further result in precipitation of Ca and Sr in Lake Xiaolongchi sediments and vice versa.…”

Section: Resultsmentioning

confidence: 99%

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ENSO-related centennial and millennial-scale hydroclimate changes recorded from Lake Xiaolongchi in arid Central Asia over the past 8000 years

Liu

Sun

et al. 2023

The Holocene

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Climate changes on different timescales and their mechanisms are of great importance in arid Central Asia (ACA). However, the contribution of El Niño−Southern Oscillation (ENSO) to Holocene hydroclimate in ACA on centennial and millennial timescales is limited by records with good age control and high temporal resolution. Here, we present high-resolution X-ray fluorescence (XRF) scanning data of a sediment core from Lake Xiaolongchi in central Tianshan Mountains to reconstruct hydroclimate changes in ACA over the last 8000 years. Our construction exhibits that the climate was dry from 8000 to 5500 cal year BP and wet from 5500 to 0 cal year BP, which resembles ENSO patterns on a millennial timescale. On the centennial timescale, hydroclimate fluctuations with eight wet periods, seven dry periods, and a shift period have a significant 800-year periodicity, coincident with periodic ENSO variance. The positive relationship between 800-year band-pass filtered hydroclimate and ENSO indicates that wet (dry) climate conditions correspond to increased (reduced) ENSO activity. We propose that the spatial pattern of “wet (dry) southern China and ACA, and dry (wet) northern China” during the El Niño-like (La Niña-like) condition may exist during the Holocene on millennial to centennial timescales.

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