Presented by Prof. Patrick Rioua
Patrick Rioual graduated from Environmental change research centre (ECRC), University College London in 2000, now work as professor of Insitute of Geology and Geophysics, Chinese Academy of Sciences. He is the member of Quaternary Research Association, International Society for Diatom Research and Association Française de Limnologie. He was appointed Honorary Senior Research Fellow in the Department of Geography of University College London for the period 2004-2010. Published more than 20 papers in journals such as Nature, Quaternary Science Reviews etc. He is specialized in palaeolimnology, using fossil diatoms from lake sediment to reconstruct past environmental and climate changes in Eurasia during the Late Quaternary.Patrick Rioual graduated from Environmental change research centre (ECRC), University College London in 2000, now work as professor of Institute of Geology and Geophysics, Chinese Academy of Sciences. He is the member of Quaternary Research Association, International Society for Diatom Research and Association Française de Limnology. He was appointed Honorary Senior Research Fellow in the Department of Geography of University College London for the period 2004-2010. Published more than 20 papers in journals such as Nature, Quaternary Science Reviews etc. He is specialized in palaeolimnology, using fossil diatoms from lake sediment to reconstruct past environmental and climate changes in Eurasia during the Late Quaternary.
Presentation Introduction:
A dataset of 26 modern diatom samples and associated environmental variables is described from the Badain Jaran desert in north-western China. Transfer functions are derived for electrical conductivity and salinity, the two variables with the largest unique effect on diatom variance as shown by partial Canonical Correspondence Analysis.In order to assess their potential for palaeosalinity and palaeoclimate reconstruction, the EC and salinity transfer functions were applied to the fossil diatom assemblages analyzed from a 210Pb-dated short sediment core collected from one of the sub-saline lakes of the Badain Jaran desert.The diatom-inferred (DI) salinity/EC reconstructions were first compared with meteorological data for the past 50 years. DI-salinity appears to match the rise in temperature and may therefore be considered as a proxy record for evaporation.
Place: Conference Room, The 3rd Floor, Hupo Hall
Time: 10:00, 6th July, 2012