563 Chapter 23 UV-Spectral Luminescence Scanning: Technical Updates and Calibration Developments Craig A. Grove, Alberto Rodriguez-Ramirez, Gila Merschel, Rik Tjallingii, Jens Zinke, Adriano Macia and Geert-Jan A. Brummer C. A. Grove () · G. Merschel · G.-J. A. Brummer Department of Marine Geology, NIOZ Royal Netherlands Institute for Sea Research, Den Burg, P.O. Box 59, 1790 AB Texel, The Netherlands e-mail: c.a.grove@umcg.nl A. Rodriguez-Ramirez School of Earth Sciences, The University of Queensland, Steele Building (#3), Staff House Road, St. Lucia, Brisbane, QLD 4072, Australia G. Merschel Faculty of Earth and Life Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1105, 1081 HV Amsterdam, The Netherlands School of Engineering and Science, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany R. Tjallingii Section 5.2 Climate Dynamics and Landscape Evolution, GFZ-German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany J. Zinke School of Earth and Environment, The University of Western Australia and the UWA Oceans Institute, 35 Stirling Highway, Crawley, WA 6009, Australia Australia and the Australian Institute of Marine Science, 39 Fairway, Nedlands, WA 6009, Australia A. Macia Departamento de Ciências Biológicas, Faculdade de Ciências, Universidade Eduardo Mondlane, C.P. 257, Maputo, Moçambique Abstract Spectral luminescence scanning (SLS) is a novel technique that uses a UV light source and line-scan camera to generate photoluminescence images of carbonate materials, such as corals. The camera in the Avaatech XRF core scanner records luminescence signals in three spectral domains of visual light, providing Red, Green and Blue (RGB) luminescence intensity data. Spectral luminescence Green/Blue ratios (G/B) of coral skeletons have previously been employed as a proxy to reconstruct river runoff. Prior G/B reconstructions have been formulated based on indirect G/B-runoff relationships (e.g. modelled discharge), as coral cores were drilled from regions where reliable long-term instrumental data were lacking, © Springer Science+Business Media Dordrecht 2015 I. W. Croudace, R. G. Rothwell (eds.), Micro-XRF Studies of Sediment Cores, Developments in Paleoenvironmental Research 17, DOI 10.1007/978-94-017-9849-5_23