Prof Helen Roberts

PhD (University of Liverpool)

Prof Helen Roberts

Professor

Department Director of Infrastructure

Contact Details

Profile

Dr Helen Roberts joined the Institute in 1998 as a post-doctoral research assistant in the Aberystwyth Luminescence Research Laboratory, and was appointed to a lectureship in Physical Geography in 2005. Prior to coming to Aberystwyth, Helen worked in the Luminescence Laboratory at the University of Durham, and also taught in the Department of Geography at the University of Exeter.

Teaching

Research

Research Interests

The development and application of luminescence geochronology, with particular interest in rates of geomorphic change, and also studying deposits of wind blown dust ('loess') and the dust record. Dust in the atmosphere has a potentially significant impact on the climate system, but its role in climate change is not well understood. The application of high resolution OSL dating to loess provides an unparalleled record of changing dust deposition rates, giving important information regarding atmospheric dust fluxes for use in climate models.

Research Groups

Publications

Strategies for equivalent dose determination without heating, suitable for portable luminescence readersRoberts, H. M., Duller, G. A. T., Gunn, M., Cousins, C., Cross, R. E. & Langstaff, D. 2018 In : Radiation Measurements.
Single-grain feldspar luminescence chronology of historical extreme wave event deposits recorded in a coastal lowland, Pacific coast of central JapanRiedesel, S., Brill, D., Roberts, H. M., Duller, G., Garrett, E., Zander, A., King, G., Tamura, T., Burow, C., Cunningham, A., Seeliger, M., De Batist, M., Heyvaert, V. M. A., Fujiwara, H., Brückner, H. & QuakeRecNankai Team 2018 In : Quaternary Geochronology.45, p. 37-4913 p.
Late Holocene anti-phase change in the East Asian summer and winter monsoonsKang, S., Wang, X., Roberts, H. M., Duller, G., Cheng, P., Lu, Y. & An, Z. 2018 In : Quaternary Science Reviews.188, p. 28-368 p.
Testing single aliquot regenerative dose (SAR) protocols for violet stimulated luminescenceColarossi, D., Chapot, M., Duller, G. & Roberts, H. M. 2018 In : Radiation Measurements.
Exploring the behaviour of luminescence signals from feldspars: Implications for the single aliquot regenerative dose protocolColarossi, D., Duller, G. & Roberts, H. M. 2018 In : Radiation Measurements.109, p. 35-44
Seeing Snails in a New LightDuller, G. & Roberts, H. M. 2018 In : Elements.14, 1, p. 39-435 p.
150,000-year palaeoclimate record from northern Ethiopia supports early, multiple dispersals of modern humans from AfricaLamb, H., Bates, C. R., Bryant, C. L., Davies, S., Huws, D. G., Marshall, M. H. & Roberts, H. M. 2018 In : Scientific Reports.8, 1077
160-11: Modeling post-depositional accumulation of 10Be in sandstones from the Hominin sites and paleolakes drilling project (HSPDP) cores for in situ cosmogenic radionuclide paleoerosing rate anlysesZawacki, E. E., Arrowsmith, J. R., Campisano, C. J., Strecker, M. R., Deino, A. L., Feibel, C. S., Kingston, J. D. & Roberts, H. M. 2017 1 p.
Identification of a Kulshan caldera correlative tephra in the Palouse loess of Washington State, northwest USAKing, G. E., Pearce, N. J. G., Roberts, H. M., Smith, V. C., Westgate, J. A., Gaylord, D. R. & Sweeney, M. R. 2016 In : Quaternary Research.86, 2, p. 232-241
The Hominin sites and Palaeolakes Drilling Project: Testing hypotheses of climate-driven human evolution and dispersal at Chew Bahir, EthiopiaLamb, H., Cohen, A., Schäbitz, F., Asrat, A., Barker, P., Bates, R., Davies, S., Deino, A., Förster, V., Grove, M., Huws, D., Junginger, A., Konrad-Schmolke, M., Lane, C., Mark, D., Pearce, N., Pearson, E., Ramsey, C., Raub, T., Rethemeyer, J., Roberts, H. M., Rogass, C., Trauth, M., Viehberg, F., Wagner, B. & Woldegabriel, G. 2016 p. 2091 p.
Natural and laboratory TT-OSL dose response curves: testing the lifetime of the TT-OSL signal in natureChapot, M. S., Roberts, H. M., Duller, G. A. T. & Lai, Z. P. 2016 In : Radiation Measurements.85, p. 41-5010 p.
Mass accumulation rate changes in Chinese loess during MIS 2, and asynchrony with records from Greenland ice cores and North Pacific Ocean sediments during the Last Glacial MaximumKang, S., Roberts, H. M., Wang, X., An, Z. & Wang, M. 2015 In : Aeolian Research.19, Part B, p. 251-2588 p.
Spatially-resolved thermoluminescence from snail opercula using an EMCCDDuller, G. A. T., Kook, M., Stirling, R. J., Roberts, H. M. & Murray, A. 2015 In : Radiation Measurements.81, p. 157-1626 p.
Comparison of paired quartz OSL and feldspar pIRIR dose distributions in poorly bleached fluvial sediments from South AfricaColarossi, D., Duller, G. A. T., Roberts, H. M., Tooth, S. & Lyons, J. R. 2015 In : Quaternary Geochronology.30, B, p. 233-238
Single grain optically stimulated luminescence dating of glacial sediments from the Baiyu Valley, southeastern TibetOu, X., Duller, G. A. T., Roberts, H. M., Zhou, S., Lai, Z. P., Chen, R., Chen, R. & Zeng, L. 2015 In : Quaternary Geochronology.30, B, p. 314-3196 p.
Climatic variability, plasticity, and dispersal: A case study from Lake Tana, EthiopiaGrove, M., Lamb, H., Roberts, H. M., Davies, S., Marshall, M. H., Bates, R. & Huws, D. 2015 In : Journal of Human Evolution.87, p. 32-4716 p.
Developing a framework of Quaternary dune accumulation in the northern Rub' al-Khali, ArabiaFarrant, A. R., Duller, G. A. T., Parker, A. G., Roberts, H. M., Parton, A., Knox, R. W. O. & Bide, T. 2015 In : Quaternary International.382, p. 132-14413 p.
Twelve thousand years of dust: The Holocene global dust cycle constrained by natural archivesAlbani, S., Mahowald, N. M., Winckler, G., Anderson, R. F., Bradtmiller, L. I., Delmonte, B., Francois, R., Goman, M., Heavens, N. G., Hesse, P. P., Hovan, S. A., Kang, S. G., Kohfeld, K. E., Lu, H., Maggi, V., Mason, J. A., Mayewski, P. A., McGee, D., Miao, X., Otto-Bliesner, B. L., Perry, A. T., Pourmand, A., Roberts, H. M., Rosenbloom, N., Stevens, T. & Sun, J. 2015 In : Climate of the Past.11, p. 869-903
Bleaching of the post-IR IRSL signal from individual grains of K-feldspar: implications for single-grain datingSmedley, R. K., Duller, G. A. T. & Roberts, H. M. 2015 In : Radiation Measurements.79, p. 33-4210 p.
Assessing the impact of pulsed-irradiation procedures on the thermally transferred OSL signal in quartzChapot, M., Duller, G. A. T. & Roberts, H. M. 2014 In : Radiation Measurements.65, p. 1-77 p.
The importance of independent chronology in integrating records of past climate change for the 60-8ka INTIMATE time intervalBrauer, A., Hajdas, I., Blockley, S. P. E., Ramsey, C. B., Christi, M., Ivy-Ochs, S., Moseley, G. E., Nowaczyk, N. N., Rasmussen, S. O., Roberts, H. M., Spotl, C., Staff, R. A. & Svensson, A. 2014 In : Quaternary Science Reviews.106, p. 47-6620 p.
Chronology and provenance of last-glacial (Peoria) loess in western Iowa and paleoclimatic implicationsMuhs, D. R., Bettis III, E. A., Roberts, H. M., Harlan, S. S., Paces, J. B. & Reynolds, R. L. 2013 In : Quaternary Research.80, 3, p. 468–481
Late Quaternary floodplain reworking and the preservation of alluvial sedimentary archives in unconfined and confined river valleys in the eastern interior of South AfricaKeen-Zebert, A., Tooth, S., Rodnight, H., Duller, G. A. T., Roberts, H. M. & Grenfell, M. 2013 In : Geomorphology.185, p. 54-6613 p.
A comparison of natural - and laboratory - generated dose response curves for quartz optically stimulated luminescence signals from Chinese LoessChapot, M., Roberts, H. M., Duller, G. A. T. & Lai, Z. P. 2012 In : Radiation Measurements.47, 11-12, p. 1045-10528 p.
Determining the K-content of single-grains of feldspar for luminescence datingSmedley, R. K., Duller, G. A. T., Pearce, N. J. G. & Roberts, H. M. 2012 In : Radiation Measurements.47, 9, p. 790-7967 p.
Developing a single-aliquot protocol for measuring equivalent dose in biogenic carbonatesStirling, R. J., Duller, G. A. T. & Roberts, H. M. 2012 In : Radiation Measurements.47, 9, p. 725-7317 p.
Testing Post-IR IRSL protocols for minimising fading in feldspars, using Alaskan loess with independent chronological controlRoberts, H. M. 2012 In : Radiation Measurements.47, 9, p. 716-7249 p.
OSL dating in multi-strata Tel: Megiddo (Israel) as a case studyPorat, N., Duller, G. A. T., Roberts, H. M., Piasetzky, E. & Finkelstein, I. 2012 In : Quaternary Geochronology.10, p. 359-3668 p.
Optically stimulated luminescence dating of glaciofluvial sediments on the Canterbury Plains, South Island, New ZealandRowan, A. V., Roberts, H. M., Jones, M. A., Duller, G. A. T., Covey-Crump, S. J. & Brocklehurst, S. H. 2012 In : Quaternary Geochronology.8, p. 10–2212 p.
Testing the use of range-finder OSL dating to inform field sampling and laboratory processing strategiesDurcan, J. A., Roberts, H. M., Duller, G. A. T. & Alizai, A. H. 2010 In : Quaternary Geochronology.5, 2-3, p. 86-905 p.
Improving the TT-OSL SAR protocol through source trap characterisationAdamiec, G., Duller, G. A. T., Roberts, H. M. & Wintle, A. G. 2010 In : Radiation Measurements.45, 7, p. 768-77710 p.
Re-evaluation of the chronology of the palaeolithic site at Jeongokri, Korea, using OSL and TT-OSL signals from quartzKim, J. C., Duller, G. A. T., Roberts, H. M., Wintle, A. G., Lee, Y. I. & Yi, S. B. 2010 In : Quaternary Geochronology.5, 2-3, p. 365-3706 p.
Testing the use of feldspars for optical dating of hurricane overwash depositsDavids, F., Duller, G. A. T. & Roberts, H. M. 2010 In : Quaternary Geochronology.5, 2-3, p. 125-1306 p.
A Dedication to Professor Ann Grace WintleRoberts, H. M., Duller, G. & Grün, R. 2010 In : Quaternary Geochronology.5, 2-3, p. 84-85
Is X-ray core scanning non-destructive? Assessing the implications for optically stimulated luminescence (OSL) dating of sedimentsDavids, F., Roberts, H. M. & Duller, G. A. T. 2010 In : Journal of Quaternary Science.25, 3, p. 348-3536 p.
A chronology of hurricane landfalls at Little Sippewissett Marsh, Massachusetts, USA, using optical datingMadsen, A. T., Duller, G. A. T., Donnelly, J. P., Roberts, H. M. & Wintle, A. G. 2009 In : Geomorphology.109, 1-2, p. 36-4510 p.
A simplified SAR protocol for TT-OSLPorat, N., Duller, G. A. T., Roberts, H. M. & Wintle, A. G. 2009 In : Radiation Measurements.44, 5-6, p. 538-5425 p.
Exploring procedures for the rapid assessment of optically stimulated luminescence range-finder agesRoberts, H. M., Durcan, J. A. & Duller, G. A. T. 2009 In : Radiation Measurements.44, 5-6, p. 582-5876 p.
Late-Holocene coastal dune system evolution in the Danube delta, NW Black Sea BasinPreoteasa, L., Roberts, H. M., Duller, G. A. T. & Vespremeanu-Stroe, A. 2009 In : Journal of Coastal Research.56, p. 347-3515 p.
Evidence of episodic coastal change during the Late Holocene: The Dungeness barrier complex, SE EnglandPlater, A. J., Stupples, P. & Roberts, H. M. 2009 In : Geomorphology.104, 1-2, p. 47-5812 p.
Assessment of diagnostic tests for evaluating the reliability of SAR De values from polymineral and quartz fine grainsKim, J. C., Roberts, H. M., Duller, G. A. T., Lee, Y. I. & Yi, S. B. 2009 In : Radiation Measurements.44, 2, p. 149-1579 p.
Dose dependence of thermally transferred optically stimulated luminescence signals in quartzKim, J. C., Duller, G. A. T., Roberts, H. M., Wintle, A. G., Lee, Y. I. & Yi, S. B. 2009 In : Radiation Measurements.44, 2, p. 132-14312 p.
The development and application of luminescence dating to loess deposits: a perspective on the past, present and futureRoberts, H. M. 2008 In : Boreas.37, 4, p. 483-50725 p.
Origin and paleoclimatic significance of late Quaternary loess in Nebraska: Evidence from stratigraphy, chronology, sedimentology, and geochemistryMuhs, D. R., Bettis, E. A., Aleinikoff, J. N., McGeehin, J. P., Beann, J., Skipp, G., Marshall, B. D., Roberts, H. M., Johnson, W. C. & Benton, R. 2008 In : Geological Society of America Bulletin.120, 11-12, p. 1378-140730 p.
Assessing the effectiveness of the double-SAR protocol in isolating a luminescence signal dominated by quartzRoberts, H. M. 2007 In : Radiation Measurements.42, 10, p. 1627-163610 p.
Reconstruction of Holocene foreland progradation using optically stimulated luminescence (OSL) dating: an example from Dungeness, UKRoberts, H. M. & Plater, A. J. 2007 In : Holocene.17, 4, p. 495-50511 p.
Swale/Ure Washlands: Single grain optically stimulated luminescence (OSL) measurements of fluvial and fluvioglacial sedimentsDuller, G. A. T. & Roberts, H. M. 2007 English Heritage. 17 p.
The depositional history of Dungeness ForelandPlater, A. J., Stupples, P. & Roberts, H. M. 2007 Dungeness and Romney Marsh: Barrier Dynamics and Marshland Evolution. Long, A., Waller, M. & Plater, A. J. (eds.). Oxford: Oxbow Books
Gwithian: Scientific dating (AMS) programmeHamilton, D., Marshall, P., Roberts, H. M., Ramsey, C. B. & Cook, G. 2007 Excavations of a Bronze Age landscape and post-Roman industrial settlement 1953-61, Gwithian, Cornwall. : Gwithian, Cornwall. Assessment of key datasets 2005-6. Nowakowski, J. A. (ed.). Cornwall Council, p. 249-26315 p.
Gwithian, Cornwall: Optically stimulated luminescence dating of sands from a Bronze Age archaeological siteRoberts, H. M. 2007 English Heritage. 16 p.
Appendix 1 Gwithian: Scientific datingHamilton, D., Marshall, P., Roberts, H. M., Ramsey, C. B. & Cook, G. 2007 In : Cornish Archaeology.46, p. 13-7664 p.
Optical dating of coarse-silt sized quartz from loess: Evaluation of equivalent dose determinations and SAR procedural checksRoberts, H. M. 2006 In : Radiation Measurements.41, 7-8, p. 923-9297 p.
D-e determination for young samples using the standardised OSL response of coarse-grain quartzBurbidge, C. I., Duller, G. A. T. & Roberts, H. M. 2006 In : Radiation Measurements.41, 3, p. 278-28811 p.
North American Loess RecordsRoberts, H. M., Muhs, D. R. & Bettis III, E. A. 2006 In : Journal of Quaternary Science.p. 1456-146510 p.
Late Quaternary eolian and alluvial response to paleoclimate, Canyonlands, southeastern UtahReheis, M. C., Reynolds, R. L., Goldstein, H., Roberts, H. M., Yount, J. C., Axford, Y., Cummings, L. S. & Shearin, N. 2005 In : Geological Society of America Bulletin.117, 9-10, p. 1376-13761 p.
Optically stimulated luminescence (OSL) dating of sands underlying the gravel beach ridges of Dungeness and Camber, southeast England, U.KRoberts, H. M. & Plater, A. J. 2005 English Heritage. 84 p.
Particle-size, CaCO3, chemical, magnetic, and age data from surficial deposits in and around Canyonlands National Park, UtahGoldstein, H., Reynolds, R. L., Reheis, M. C., Yount, J. C., Lamothe, P., Roberts, H. M. & McGeehin, J. P. 2005 United States Geological Survey. 201 p.
Standardised growth curves for optical dating of sediment using multiple-grain aliquotsRoberts, H. M. & Duller, G. A. T. 2004 In : Radiation Measurements.38, 2, p. 241-25212 p.
Evidence for dune reactivation from GPR profiles on the Maputaland coastal plain, South AfricaBotha, G. A., Bristow, C. S., Porat, N., Duller, G. A. T., Armitage, S. J., Roberts, H. M., Clarke, B. M., Kota, M. W. & Schoeman, P. 2003 In : Geological Society Special Publications.211, p. 29-4618 p.
Unprecedented last-glacial mass accumulation rates determined by luminescence dating of loess from western NebraskaRoberts, H. M., Muhs, D. R., Wintle, A. G., Duller, G. A. T. & Bettis III, E. A. 2003 In : Quaternary Research.59, 3, p. 411-4199 p.
Holocene loess accumulation and soil development at the western edge of the Chinese Loess Plateau: implications for magnetic proxies of palaeorainfallMaher, B. A., MengYu, H., Roberts, H. M. & Wintle, A. G. 2003 In : Quaternary Science Reviews.22, 5-7, p. 445-4517 p., PII S0277-3791(02)00188-9
Luminescence sensitivity changes of polymineral fine grains during IRSL and [post-IR] OSL measurementsRoberts, H. M. & Wintle, A. G. 2003 In : Radiation Measurements.37, 6, p. 661-67111 p.
Last Glacial loess in the conterminous USABettis III, E. A., Muhs, D. R., Roberts, H. M. & Wintle, A. G. 2003 In : Quaternary Science Reviews.22, 18-19, p. 1907-194640 p.
Equivalent dose determinations for polymineralic fine-grains using the SAR protocol: application to a Holocene sequence of the Chinese Loess PlateauRoberts, H. M. & Wintle, A. G. 2001 In : Quaternary Science Reviews.20, 5-9, p. 859-8635 p.
Holocene sediment-accumulation rates in the western Loess Plateau, China, and a 2500-year record of agricultural activity, revealed by OSL datingRoberts, H. M., Wintle, A. G., Maher, B. A. & Hu, M. 2001 In : Holocene.11, 4, p. 477-4837 p.
U- and Th-series disequilibria in coastal infill sediments from Praia da Rocha (Algarve Region, Portugal): a contribution to the study of late Quaternary weathering and erosionRoberts, H. M. & Plater, A. J. 1999 In : Geomorphology.26, 4, p. 223-23816 p.