Testing for sufficient signal resetting during sediment transport using a polymineral multiple-signal luminescence approach |
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| Institution: | 1. Netherlands Centre for Luminescence Dating, Soil Geography and Landscape group, Wageningen University, 6700 AA Wageningen, The Netherlands;2. Coastal Engineering, Civil Engineering and Geosciences, Delft University of Technology, 2600 AA Delft, The Netherlands;3. Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands;1. UCLA Earth, Planetary, and Space Sciences, 595 Charles Young Drive East, Box 951567, 90095 Los Angeles, CA, USA;2. University of Sheffield, Geography, Winter Street, Sheffield, South Yorkshire S10 2TN, UK;1. Faculty of Applied Science, Department of Luminescence Materials and Radiation Detection, Delft University of Technology, Netherlands;2. Netherlands Centre for Luminescence Dating (NCL), Wageningen University, Netherlands;3. Soil Geography and Landscape Group, Wageningen University, Netherlands;1. Centre for Archaeological Science, School of Earth and Environmental Sciences, University of Wollongong, Wollongong, NSW 2522, Australia;2. Department of Earth Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China;1. Institute of Geography, University of Cologne, Germany;2. Department of Geography and Earth Sciences, Aberystwyth University, United Kingdom;3. Department of Geography, Durham University, United Kingdom;4. Geological Survey of Belgium, Brussels, Belgium;5. Institute of Geological Sciences and Oeschger Centre for Climate Change Research, University of Bern, Switzerland;6. Geological Survey of Japan, AIST, Japan;7. Department of Geoscience, Aarhus University, DTU Nutech, Risø Campus, DK-4000, Roskilde, Denmark;8. Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus, DK-4000, Roskilde, Denmark;9. Department of Geology, Ghent University, Belgium;1. Department of Science, Systems and Models, Roskilde University, Denmark;2. Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, Denmark;3. Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus, Denmark;4. Institute for Ancient Near Eastern Archaeology, Free University Berlin, Germany;5. DNRF Centre “Glass and Time,” Department of Science, Systems and Models, Roskilde University, Denmark |
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| Abstract: | We present a multiple luminescence signal measurement procedure that simultaneously measures six different luminescence signals from a single polymineral aliquot (i.e. multiple-signal, short MS-SAR approach). The six signals show different bleaching rates in bleaching experiments, ranging from rapid bleaching for the quartz dominated blue stimulated luminescence signal (measured at 125 °C, BSL-125), to the slow-bleaching polymineral thermoluminescence signal. The bleaching rate of the infrared stimulated luminescence (IRSL) measured at room temperature (IR-25) and elevated temperature post-IR IRSL (pIRIR-90, pIRIR-155, pIRIR-225) signals decrease with increasing measurement temperature. Owing to these different bleaching rates, the MS-SAR approach allows inference of the degree of bleaching, and thereby information on the transport history of sediments. We test this approach by applying the MS-SAR to four coastal samples from a well-monitored sand-nourishment site at the Dutch coast. Our results show that the proposed MS-SAR approach can be utilised to construct bleaching plateaus which provide an independent and time-effective measure of the degree of poor bleaching in a sediment sample based on the measurement of only a few large aliquots. We propose that the MS-SAR protocol can be used to profile the age, luminescence properties and degree of bleaching of minimal prepared polymineral. This pre-profiling will allow the selection of suitable samples for full luminescence dating analysis in a target-orientated and time-effective manner. |
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| Keywords: | Luminescence dating Poor bleaching Multiple signal approach Coastal sediments Luminescence profiling |
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