Use of a scanning XRF analysis on SR beams from VEPP-3 storage ring for research of core bottom sediments from Teletskoe Lake with the purpose of high resolution quantitative reconstruction of last millennium paleoclimate

Daryin, A.V.; Калугин, И. А.; Maksimova, N. V.; Smolyaninova, L. G.; Zolotarev, K.V.

doi:10.1016/j.nima.2005.01.217

Cited by 20 publications

(12 citation statements)

References 5 publications

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“…Synchrotron radiation X‐ray fluorescence (SRXRF) measurement provides an approach to continuous nondestructive analyze elements under a sharp synchrotron beam combined with measurements of the X‐ray fluorescence [ Daryin et al , 2005; Kalugin et al , 2005, 2007; Goldberg et al , 2007]. Figure 7 shows an example of Synchrotron radiation X‐ray fluorescence (SRXRF) analyses.…”

Section: Resultsmentioning

confidence: 99%

Evidence for decreasing South Asian summer monsoon in the past 160 years from varved sediment in Lake Xinluhai, Tibetan Plateau

Chu

Sun²,

Yang

et al. 2011

J. Geophys. Res.

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[1] We report glacial varves in the sediment of Lake Xinluhai, Tibetan Plateau. Independent data of 137 Cs and 210 Pb indicate that these are annually deposited varves. Varves appear as rhythmic units of light-colored silt layer capped by a dark clay layer under microscope. Varve thickness in Lake Xinluhai is sensitive to precipitation because sediment accumulation is strongly affected by monsoon rainfall in the area. A general decreasing trend can be observed in the varve thickness over the past 160 years. Spectral analyses of the varve record are dominated by cycles which are similar to ENSO periodicities. It implies that the decreasing trend of the South Asia monsoon may be linking with ENSO. Spatially, the decreasing trend can be observed across different proxy records in the south of the Tibetan Plateau. Although arguments still remain for the dynamic mechanisms and spatial rainfall difference, the South Asian summer monsoon could be weakened due to rising temperatures.

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Section: Resultsmentioning

confidence: 99%

Evidence for decreasing South Asian summer monsoon in the past 160 years from varved sediment in Lake Xinluhai, Tibetan Plateau

Chu

Sun²,

Yang

et al. 2011

J. Geophys. Res.

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“…Key core site and Chulyshman River are marked. sensitivity scanning analysis on sediment cores (Tel 2001-02 andTel 2002) in the Siberian Center of Synchrotron Radiation, Novosibirsk, allowed the determination of elemental composition at 1-mm resolution (Daryin et al, 2005;Goldberg et al, 2005). Construction of a quantitative age-based model has been done after correction for compaction of the upper sediment layers and confirmed by AMS 14 C dating from the bottom of the core (this work).…”

Section: Introductionmentioning

confidence: 84%

800-yr-long records of annual air temperature and precipitation over southern Siberia inferred from Teletskoye Lake sediments

et al. 2007

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A unique 800-yr-long record of annual temperatures and precipitation over the south of western Siberia has been reconstructed from the bottom sediments of Teletskoye Lake, Altai Mountains using an X-ray fluorescence scanner (XRF) providing 0.1-mm resolution timeseries of elemental composition and X-ray density (XRD). Br content appears to be broadly correlative with mean annual temperature variations because of changes in catchment vegetation productivity. Sr/Rb ratio reflects the proportion of the unweathered terrestrial fraction. XRD appears to reflect water yield regime and sediment flux. Sedimentation is rather continuous because annual clastic supply and deposited mass are the same. The artificial neural networks method was applied to convert annual sedimentary time-series of XRD, Br content, and Sr/Rb ratio to annual records of temperature and precipitation using a transfer function. Comparison of these reconstructed Siberian records with the annual record of air temperature for the Northern Hemisphere shows similar trends in climatic variability over the past 800 yr. Estimated harmonic oscillations of temperature and precipitation values for both historical and reconstructed periods reveal subdecadal cyclicity.

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“…Röhl & Abrams (2000) describe the use of the XRF methodology as a quick and inexpensive way to identify sedimentological and environmental changes. The method has previously been used for marine cores (Lamy et al 2001) and for lake sediments (Daryin et al 2005).…”

Section: Methodsmentioning

confidence: 99%

Holocene relative sea-level changes in the Qaqortoq area, southern Greenland

Sparrenbom¹,

Bennike²,

Björck³

et al. 2008

Boreas

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We present results from an investigation of relative sea-level changes in the Qaqortoq area in south Greenland from c. 11 000 cal. yr BP to the present. Isolation and transgression sequences from six lakes and two tidal basins have been identified using stratigraphical analyses, magnetic susceptibility, XRF and macrofossil analyses. Macrofossils and bulk sediments have been dated by AMS radiocarbon dating. Maximum and minimum altitudes for relative sea level are provided from two deglaciation and marine lagoon sequences. Initially, relative sea level fell rapidly and reached present-day level at Â/9000 cal. yr BP and continued falling until at least 8800 cal. yr BP. Between 8000 and 6000 cal. yr BP, sea level reached its lowest level of around 6 Á/8 m below highest astronomical tide (h.a.t.). At around 3750 cal. yr BP, sea level has reached above 2.7 m below h.a.t. and continued to rise slowly, reaching the present-day level between Â/2000 cal. yr BP and the present. As in the Nanortalik area further south, initial isostatic rebound caused rapid isolation of low elevation basins in the Qaqortoq area. Distinct isolation contacts in the sediments are observed. The late Holocene transgression is less well defined and occurred over a longer time interval. The late Holocene sea-level rise implies reloading by advancing glaciers superimposed on the isostatic signal from the North American Ice Sheet. One consequence of this transgression is that settlements of Palaeo-Eskimo cultures from Â/4000 cal. yr BP may have been transgressed by the sea.Charlotte J. Sparrenbom

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Use of a scanning XRF analysis on SR beams from VEPP-3 storage ring for research of core bottom sediments from Teletskoe Lake with the purpose of high resolution quantitative reconstruction of last millennium paleoclimate

Cited by 20 publications

References 5 publications

Evidence for decreasing South Asian summer monsoon in the past 160 years from varved sediment in Lake Xinluhai, Tibetan Plateau

Evidence for decreasing South Asian summer monsoon in the past 160 years from varved sediment in Lake Xinluhai, Tibetan Plateau

800-yr-long records of annual air temperature and precipitation over southern Siberia inferred from Teletskoye Lake sediments

Holocene relative sea-level changes in the Qaqortoq area, southern Greenland

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