Scanning X-ray microanalysis of bottom sediments using synchrotron radiation from the BINP VEPP-3 storage ring

Dar’in, A. V.; Калугин, И. А.; Rakshun, Ya. V.

doi:10.3103/s106287381302010x

Cited by 28 publications

(5 citation statements)

References 9 publications

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“…The chemical composition of LV77-36-2 sediments was studied via X-ray fluorescence scanning by using synchrotron radiation (XRF SR) of the storage ring (VEPP-3; the Budker Institute of Nuclear Physics, Novosibirsk) for specially prepared monoliths of sediments (Darin et al, 2013). The scanning step was 0.51 mm (Figure 2, Supplemental Tables SD2, SD3, available online).…”

Section: Methodsmentioning

confidence: 99%

Climate and ice conditions of East Siberian Sea during Holocene: Reconstructions based on sedimentary geochemical multiproxy

et al. 2022

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Reconstruction of ice conditions and climate of the East Siberian Sea during the Late Middle Holocene was implemented for the first time using a transfer function method based on marine sedimentation proxies. Transfer functions were developed based on a hydrometeorological time series of changes in mean annual air temperature (ΔT10) and the ice-free period (IF10) for the last 70–90 years and a geochemical time series of bottom sediments accumulated during this time, which were obtained using a submillimeter scanning of the core in the X-ray fluorescence analysis of synchrotron radiation. Geochemical time series of Holocene deposits were obtained from X-ray fluorescence analysis of the core in a step of 1–2 cm. Reconstruction of ice conditions and average annual air temperature revealed a decreasing trend of ΔT10 and IF10, which started from the middle Holocene up to the Little Ice Age due to an orbitally determined decrease in insolation. A synchronous periodicity of changes in ice cover and air temperature was revealed and approximated by periods of 1600 years for IF10 and 1740 years for ΔT10, which are comparable to Bond’s climatic cycles. These results indicates the telecommunication of the Atlantic processes, climate of the East Siberian Sea, and predominance of the cyclonic type of atmospheric circulation during the Holocene.

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Section: Methodsmentioning

confidence: 99%

Climate and ice conditions of East Siberian Sea during Holocene: Reconstructions based on sedimentary geochemical multiproxy

et al. 2022

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“…Рентгенофлуо ресцентный анализ (XRF) с использованием кернового сканера ITRAX обеспечивает неде структивный сканирующий анализ с простран ственным разрешением от 200 мкм [13] . Метод рентгенофлуоресцентного анализа на пучках синхротронного излучения (РФАСИ), кото рый используется, в частности, группой иссле дователей Института геологии и минералогии СО РАН (Новосибирск), позволяет выполнять сканирующий анализ с предельно высоким раз решением -от 100 мкм [17] . Результатом слу жат множественные кривые содержания хими ческих элементов по всей длине керна .…”

Section: геохимический анализ осадкаunclassified

Proglacial lake sediments – a basis for uninterrupted chronicles of the Holocene glacier variations

Александрин¹

2015

Lëd i sneg

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Статья принята к печати 25 октября 2014 г. Климат голоцена, озёрные осадки, палеоклиматические реконструкции, палеолимнология, реконструкции оледенения. Holocene climate, lake sediments, paleoclimatic reconstructions, paleolimnology, reconstructions of glacier variations.Озёрные осадки могут служить основой для создания непрерывных реконструкций голоценовых колебаний ледников с высоким разрешением. В статье рассматриваются история становления палеолимнологической методики в гляциологии и теоретические основы метода, освещены главные методики анализа озёрных осадков, а также способы построения возрастных моделей. Анализируются возможности и ограничения реконструкции высоты границы питания ледников на основе озёрных осадков. Приведены примеры подобных реконструкций в разных районах мира.Lake sediments can provide a basis for creating uninterrupted reconstructions of the Holocene glacier variations with high resolution. The article covers the origin of paleolimnological method in glaciology, concerns the theoretical background of the approach, focuses on the principal methods of analysis of the lake sediments and creating the sedimentary age-depth models. The article considers the possibilities and limitations of reconstructing the equilibrium-line altitude based on lake sediments. The examples of similar reconstructions in various regions of the world are stated.

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“…We used a one dimensional scanner and a system for collimating and focusing the beam that allowed us to perform measurements of more than 20 minor elements with detection limits of ~1-5 ppm in cores of bottom sediments with a spatial resolution of 100 μm along one coordinate at excitation energy of 15-30 keV. The applied experimental apparatus allowed us to reach a new quality of paleoclimatic reconstructions with annual time resolution (Dar'in et al, 2013a).…”

Section: Sample Preparations and Measuringmentioning

confidence: 99%

Lake Shira Level Changes in Late Holocene

Дарин

Калугин

Maksimova

et al. 2014

Acta Geologica Sinica - English Edition

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Scanning X-ray microanalysis of bottom sediments using synchrotron radiation from the BINP VEPP-3 storage ring

Cited by 28 publications

References 9 publications

Climate and ice conditions of East Siberian Sea during Holocene: Reconstructions based on sedimentary geochemical multiproxy

Climate and ice conditions of East Siberian Sea during Holocene: Reconstructions based on sedimentary geochemical multiproxy

Proglacial lake sediments – a basis for uninterrupted chronicles of the Holocene glacier variations

Lake Shira Level Changes in Late Holocene

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