Scanning SR-XRF beamline for analysis of bottom sediments

Zolotarev, K.V.; Goldberg, E.L.; Kondratyev, Vladimir; Kulipanov, G.N.; Miginsky, E.G.; Tsukanov, V. M.; Phedorin, M.A.; Kolmogorov, Yu. P.

doi:10.1016/s0168-9002(01)01073-7

Cited by 31 publications

(18 citation statements)

References 9 publications

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“…In contrast to traditional methods of discrete analysis (Baryshev et al, 1989), the continuous XRF scanning technique applied to freshly opened longitudinally split sediment cores has been applied in order to obtain high-resolution temporal analyses. One-dimensional XRF scanning at a VEPP-3 storage ring at the "Baikal" SRXFA station in the Budker Institute of Nuclear Physics, Novosibirsk, has been used for the detection of elemental composition of studied cores (Zolotarev et al, 2001). Records of 28 elements with 1-mm scanning resolution were obtained from the cores simultaneously.…”

Section: Methodsmentioning

confidence: 99%

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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Section: Methodsmentioning

confidence: 99%

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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“…It includes a 1D scanner and a system of beam collimation that allow detecting over 20 chemical elements with the detection limits of~1-5 ppm for bottom sediment cores, with a spatial resolution of about 100 μm along one coordinate at excitation energy of 15-30 keV. [23] This unique experimental device has enabled a new quality of paleoenvironmental reconstructions, i.e. a 1-year resolution (in some cases, even a 1-season one) with time intervals of a few thousands of years.…”

Section: Methodsmentioning

confidence: 99%

Tracing recent glacial events in bottom sediments of a glacial lake (East Sayan Ridge, Russia) from high‐resolution SR‐XRF, ICP‐MS, and FTIR records

et al. 2015

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The paper presents a study of bottom sediments of proglacial Lake Ehoy, which intakes the meltwater of Peretolchin glacier, the East Sayan Ridge. A bottom sediment sequence that formed in the period of 1885-2013 was investigated with a year/season time resolution using X-ray fluorescence with synchrotron radiation and conventional analysis. A depth-age model of the core was based on counting of the annual laminae. The model was checked by an analysis of the distribution of activity of

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“…The samples were 22 cm long, 1.2 cm wide and 0.6 cm thick slices of wet sediment placed in aluminium trays. The trays were moved vertically under a 1 mm and SR beam collimated by a cross-slit system (Zolotarev et al 2001). The spectral responses of the absolute concentrations of elements from their fluorescent peaks were processed using the algorithm of fundamental parameters to overcome problems caused by water content variability in nearly saturated wet sediments .…”

Section: The Elemental Compositionmentioning

confidence: 99%

A 850-year record climate and vegetation changes in East Siberia (Russia), inferred from geochemical and biological proxies of lake sediments

et al. 2014

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East Siberia is very sensitive to moisture regimes because it is located in a margin area, where moisture from the North Atlantic is strongly depleted, and the penetration of the East Asian monsoon is weak and rare. In winter months, the Siberian anticyclone strongly blocks and reduces the external influences on the region. The high latitude of the study area at 52°N is probably sensitive to variation in insolation and solar activity. We analysed a 42-cm-long sediment record from Lake Mountain located in East Siberia (Russia) for geochemical, mineralogical, subfossil diatoms, chironomids, and pollen to provide a reconstruction of the climate history of the area for the last 850 years. According to our reconstruction, a clear decrease in summer temperatures occurred in East Siberia after ca. 1400 and we linked this temperature drop with the beginning of the Little Ice Age. The coldest summer occurred about ca. 1570-1700 and 1830-1900. We assumed that the most significant changes of the lake bio-productivity and the catchment area were occurred about ca.

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Scanning SR-XRF beamline for analysis of bottom sediments

Cited by 31 publications

References 9 publications

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

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

Tracing recent glacial events in bottom sediments of a glacial lake (East Sayan Ridge, Russia) from high‐resolution SR‐XRF, ICP‐MS, and FTIR records

A 850-year record climate and vegetation changes in East Siberia (Russia), inferred from geochemical and biological proxies of lake sediments

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