1,721,163 research outputs found
High resolution XRF core scanners: A key tool for the environmental and palaeoclimate sciences
No full textCurrent perspectives on the capabilities of high resolution XRF core scanners
No full textThe introduction and application of high resolution XRF core scanners has made an enormous contribution to palaeoclimate science over the last two decades. These core scanners have become essential analytical tools for the investigation of sedimentary and other natural cumulative records of environmental change. Their widespread adoption by the environmental and geoscience communities has had a significant impact on the ability to systematically record high resolution chemical profiles in marine and lake sediments and soils. The range of applications has broadened beyond sedimentology and palaeoclimatology and now extends into scanning samples of speleothems, corals, mumiyo mounds, rocks, sedimentary nodules, archaeological artefacts, tree sections and melt segregations. Other areas exploiting the capability of XRF core scanners are mineral exploration, geotechnical characterisation, soil remediation studies and carbon capture and storage research. As a consequence of their ability to efficiently determine detailed, non-destructive elemental records in sediments and soils, scientific papers published since the year 2000 now number more than 1000.</p
AOV-IC model simulation of the vegetation cover and the annual mean daily precipitation in the Sahara grid box
No full textAOV-IC-f model simulation of the vegetation cover and the annual mean daily precipitation in the Sahel grid box
No full textAOV-IC-f model simulation of the vegetation cover and the annual mean daily precipitation in the Sahara grid box
No full textCalcium carbonate (CaCO3), total organic carbon (TOC) contents and carbon-to-nitrogen ratio (C/N) from composite sediment core BIS-2000
No full textThe data set bundle comprises geochemical, XRF core scanning and pollen data from composite sediment core BIS-2000, which was compiled from two parallel sediment cores (BIS-1 and BIS-3) obtained near Bispingen, northern Germany (53.071528°N, 9.989861°E, 82.0 m). BIS-2000 comprises Last Interglacial (Eemian) to early Last Glacial (Weichselian) palaeolake deposits, which cover the section between 15.55 and 30.68 m composite depth.
The data set Bispingen BIS-2000 geochemistry contains calcium carbonate (CaCO3) and total organic carbon (TOC) contents (expressed as per cent of sediment dry weight) as well as carbon-to-nitrogen ratio (C/N) data. Analyses were carried out at the GFZ German Research Centre for Geosciences in Potsdam, Germany, on the section between 15.55 and 30.72 m composite depth. The CaCO3 content was calculated from the total inorganic carbon (TIC) content, which was measured using a STRÖHLEIN Coulomat 702. In addition, measurements of the total carbon (TC) and total nitrogen (TN) contents were carried out using a LECO CNS-2000 elemental analyser. TOC was calculated as the difference between TC and TIC and C/N was calculated as the mass ratio between TC and TN
Continental humidity index of sediment core GeoB7920-2
No full textContinental humidity index of sediment core GeoB7920-
Age model of sediment core GeoB7920-2
No full textTie points to stck benthic isotope record of MD95 2042 on GRIP ss09sea timescale: Reference: Absolute calibration of the Greenland time scale: implications for Antarctic time scales and for D14C (N.J Shackleton, R.G Fairbanks, Tzu-chien Chiu, F. Parrenin, Quaternary Science Reviews 23 (2004) 1513-1522), Reference: Phase relationships between millennial scale events 64000 to 24000 years ago (N.J.Shackleton, M.A. Hall and E. Vincent, Paleoceanography, Vol. 15, no. 6, (2000), 565-569
Stable isotope record of Cibicidoides wuellerstorfi of sediment core GeoB7920-2
No full textStable isotope record of Cibicidoides wuellerstorfi of sediment core GeoB7920-
Pollen percentage values of selected taxa from composite sediment core BIS-2000
No full textThe data set bundle comprises geochemical, XRF core scanning and pollen data from composite sediment core BIS-2000, which was compiled from two parallel sediment cores (BIS-1 and BIS-3) obtained near Bispingen, northern Germany (53.071528°N, 9.989861°E, 82.0 m). BIS-2000 comprises Last Interglacial (Eemian) to early Last Glacial (Weichselian) palaeolake deposits, which cover the section between 15.55 and 30.68 m composite depth.
The data set Bispingen BIS-2000 pollen contains pollen percentage values of selected taxa. Analyses were carried out at the University of Bonn, Germany, and at the University of the Witwatersrand, South Africa, on the section between 18.19 and 30.68 m composite depth. Sample preparation followed the standard method described by Berglund & Ralska-Jasiewiczowa (1986), including treatment with cool HF and HCl, acetolysis, staining with safranine, and mounting in glycerol. Pollen counting was carried out using a light microscope at 400× magnification and pollen percentages were calculated based on the sum of trees/shrubs (arboreal pollen) and dwarf shrubs/herbs (non-arboreal pollen; excluding aquatic and wetland plants)
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