Staff Profile

Qualifications

BSc Physical Geography, UCW Aberystwyth (1985)
PhD Royal Holloway, University of London (1989)

Memberships

Member of the American Geophysical Union 

Member of the Quaternary Research Association

Research Interests

Research interests include Quaternary fluvial system development and stratigraphy, fluvial geomorphology, geochronology, palaeoclimate and palaeoenvironmental reconstruction.

Current Work

I continue to work on Late Cenozoic fluvial system development in the UK (Severn, Avon and Thames) and Turkey (Gediz River, Western Turkey; Kura River, North-Eastern Turkey). My work in Turkey is in association with Prof Tuncer Demir (Akdeniz University, Antalya) and Dr Seydar Aytac (Harran University, Sanliurfa), Prof Tom Veldkamp (University of Twente), Dr Jeroen Schoorl (Wageningen University) and Prof Rob Scaife (Southampton University).

I am also working with colleagues from Newcastle University Computing (Dr Stephen McGough),  Durham  University (Prof John Wainwright)  and Becky Briant (Birkbeck University of London) on developing a new Landscape Evolution Model, developed to leverage the high performance computing (HPC) power of general purpose graphics processing units (GPGPUs). 

PARALLEM is being used to mofel the Rio Bergantes catchment in NE Spain as part of a FACSIMILE project.

Esteem Indicators

Leader (1996-2006) and founding member of the International Research Group FLAG (FLuvial Archives Group) Member of the FLAG Executive (2006-2008)
Full Member of the INQUA Commission on Terrestrial Deposits and Processes (2003-2007 )
Member of the BIAA Research Committee (2007-2012 )
Co-leader of FACSIMILE (Field And Computer SIMulation In Landscape Evolution)  international research group (2014-)

Funding

Work in Turkey (2004-2021) funded by the British Institute at Ankara (BIAA). The latest funding (2017-2021) is for a project entitled Pleistocene Environments of the Gediz Valley: Stable isotope signatures from Travertines 

Faculty and GPS funding to setup a local HPC cluster for Landscape Evolution Model development and to purchase additional cloud-based HPC capacity for model application.

Undergraduate Teaching

I am module leader for : 

GEO3147: Palaeoclimates 

GEO2136; Global Environmental Change (with Prof Juggins)

I also teach on :

GEO1020: Introduction to Physical Geography 

GEO2127:  Doing Physical Geography Research: Theory and Practise

GEO2137: Key Methods for Physical Geographers

• Maddy D, Veldkamp A, Demir T, Aytaç AS, Schoorl JM, Scaife R, Boomer I, Stemerdink C, vanderSchriek T, Aksay S, Lievens C. Early Pleistocene River Terraces of the Gediz River, Turkey: The role of faulting, fracturing, volcanism and travertines in their genesis. Geomorphology 2020, 358, 107102.
• Briant RM, Wainwright J, Maddy D. New approaches to field-model data comparison: Numerical modelling of the last glacial cycle in the Welland catchment, England. Geomorphology 2018, 323, 106-122.
• Maddy D, Veldkamp A, Demir T, vanGorp W, Wijbrans JR, vanHinsbergen DJJ, Dekkers MJ, Schreve D, Schoorl JM, Scaife R, Stemerdink C, vanderSchriek T, Bridgland DR, Aytaç AS. The Gediz River fluvial archive: A benchmark for Quaternary research in Western Anatolia. Quaternary Science Reviews 2017, 166, 289-306.
• Veldkamp A, Baartman JEM, Coulthard TJ, Maddy D, Schoorl JM, Storms JEA, Temme AJAM, van Balen R, van De Wiel MJ, van Gorp W, Viveen W, Westaway R, Whittaker AC. Two decades of numerical modelling to understand long term fluvial archives: Advances and future perspectives. Quaternary Science Reviews 2017, 166, 177-187.
• Cordier S, Briant B, Bridgland D, Herget J, Maddy D, Mather A, Vandenberghe J. The Fluvial Archives Group: 20 years of research connecting fluvial geomorphology and palaeoenvironments. Quaternary Science Reviews 2017, 166, 1-9.
• van Gorp W, Schoorl JM, Temme AJAM, Reimann T, Wijbrans JR, Maddy D, Demir T, Veldkamp T. Catchment response to lava damming: integrating field observation, geochronology and landscape evolution modelling. Earth Surface Processes and Landforms 2016, 41(11), 1629-1644.
• Veldkamp A, Candy I, Jongmans AG, Maddy D, Demir T, Schoorl JM, Schreve D, Stemerdink C, van der Schriek T. Reconstructing Early Pleistocene (1.3 Ma) terrestrial environmental change in western Anatolia: Did it drive fluvial terrace formation?. Palaeogeography, Palaeoclimatology, Palaeoecology 2015, 417, 91-104.
• Maddy D, Schreve D, Demir T, Veldkamp A, Wijbrans JR, van Gorp W, van Hinsbergen DJJ, Dekkers MJ, Scaife R, Schoorl JM, Stemerdink C, van der Schriek T. The earliest securely-dated hominin artefact in Anatolia?. Quaternary Science Reviews 2015, 109, 68-75.
• van Gorp W, Veldkamp A, Temme A, Maddy D, Demir T, van der Schriek T, Reimann T, Wallinga J, Wijbrans J, Schoorl J. Fluvial response to Holocene volcanic damming and breaching in the Gediz and Geren rivers, western Turkey. Geomorphology 2013, 201, 430-448.
• Maddy D, Demir T, Veldkamp T, Aytec S, Scaife R. Quaternary environments in the upper catchment of the Kura river, northeastern Turkey: a context for early hominin occupation and migration. Heritage Turkey 2013, 3, 5-8.
• McGough AS, Liang S, Rapoportas M, Grey R, Vinod GK, Maddy D, Trueman A, Wainwright J. Massively parallel landscape-evolution modelling using general purpose graphical processing units. In: 19th International Conference on High Performance Computing (HiPC 2012). 2012, Pune: IEEE.
• Maddy D, Demir T, Veldkamp A, Bridgland DR, Stemerdink C, van der Schriek T, Schreve D. The obliquity-controlled early pleistocene terrace sequence of the Gediz River, western Turkey: a revised correlation and chronology. Journal of the Geological Society 2012, 169(1), 67-82.
• Maddy D, Veldkamp A, Jongmans AG, Candy I, Demir T, Schoorl JM, van der Schriek T, Stemerdink C, Scaife RG, van Gorp W. Volcanic disruption and drainage diversion of the palaeo-Hudut River, a tributary of the Early Pleistocene Gediz River, Western Turkey. Geomorphology 2012, 165-166, 62-77.
• Meikle C, Stokes M, Maddy D. Field mapping and GIS visualisation of Quaternary river terrace landforms: an example from the Rio Almanzora, SE Spain. Journal of Maps 2010, 531-542.
• Stemerdink C, Maddy D, Bridgland DR, Veldkamp A. The construction of a palaeodischarge time series for use in a study of fluvial system development of the Middle to Late Pleistocene Upper Thames. Journal of Quaternary Science 2010, 25(4), 447-460.
• Penkman KEH, Kaufman DS, Maddy D, Collins MJ. Closed-system behaviour of the intra-crystalline fraction of amino acids in mollusc shells. Quaternary Geochronology 2008, 3(1-2), 2-25.
• Maddy D, Demir T, Bridgland D, Veldkamp A, Stemerdink C, van der Schriek T, Westaway R. The Early Pleistocene development of the Gediz River, Western Turkey: An uplift-driven, climate-controlled system?. Quaternary International 2008, 189(1), 115-128.
• Murton J, Frechen M, Maddy D. Luminescence dating of mid- to Late Wisconsinan aeolian sand as a constraint on the last advance of the Laurentide Ice Sheet across the Tuktoyaktuk Coastlands, western Arctic Canada. Canadian Journal of Earth Sciences 2007, 44(6), 857-869.
• Maddy D, Demir T, Veldkamp A, Candy I, Pearson E. Reconstructing Early Pleistocene environments in the Gediz river valley. Anatolian Archaeology 2007, 13, 8-10.
• Penkman K, Preece R, Keen D, Maddy D, Schreve D, Collins M. Testing the aminostratigraphy of fluvial archives: the evidence from intra-crystalline proteins within freshwater shells. Quaternary Science Reviews 2007, 26(22-24), 2958-2969.
• Maddy D, Demir T, Bridgland D, Veldkamp A, Stemerdink C, van der Schriek T, Schreve D. The Pliocene initiation and Early Pleistocene volcanic disruption of the palaeo-Gediz fluvial system, Western Turkey. Quaternary Science Reviews 2007, 26(22-24), 2864-2882.
• Lewis S, Maddy D, Buckingham C, Coope G, Field M, Keen D, Pike A, Roe D, Scaife R, Scott K. Pleistocene fluvial sediments, palaeontology and archaeology of the upper River Thames at Latton, Wiltshire, England. Journal of Quaternary Science 2006, 21(2), 181-205.
• Maddy D, Demir T, Bridgland D, Veldkamp A, Stemerdink C, van der Schriek T, Westaway R. An obliquity-controlled Early Pleistocene river terrace record from Western Turkey?. Quaternary Research 2005, 63(3), 339-346.
• Maddy D, Demir T. Climate history of Anatolia and the Black Sea: Early Pleistocene environments in the Gediz river valley. Anatolian Archaeology 2005, 11, 9-11.
• Maddy D, Lewis SG. Glaciation and the Pleistocene development of the Lower River Severn, UK. In: Lewis CA; Richards AE, ed. The glaciations of Wales and adjacent areas. Almeley, Herefordshire: Logaston Press, 2005, pp.73-84.
• Maddy D, Long A, Bridgland D. Quaternary land-ocean correlation: A tribute to Professor David Q. Bowen. Quaternary Science Reviews 2005, 24(14-15), 1543-1546.
• Barber K, Chambers F, Maddy D. Late Holocene climatic history of northern Germany and Denmark: Peat macrofossil investigations at Dosenmoor, Schleswig-Holstein, and Svanemose, Jutland. Boreas 2004, 33(2), 132-144.
• Xie S, Nott C, Avsejs L, Maddy D, Chambers F, Evershed R. Molecular and isotopic stratigraphy in an ombrotrophic mire for paleoclimate reconstruction. Geochimica et Cosmochimica Acta 2004, 68(13), 2849-2862.
• Westaway R, Pringle M, Yurtmen S, Demir T, Bridgland D, Rowbotham G, Maddy D. Pliocene and Quaternary regional uplift in western Turkey: The Gediz River terrace staircase and the volcanism at Kula. Tectonophysics 2004, 391(1-4), 121-169.
• Bridgland D, Maddy D, Bates M. River terrace sequences: Templates for Quaternary geochronology and marine-terrestrial correlation. Journal of Quaternary Science 2004, 19(2), 203-218.
• Lewis S, Maddy D, Glenday S. The Thames Valley Sediment Conveyor: Fluvial system development over the last two interglacial-glacial cycles. Quaternaire 2004, 15(1-2), 17-28.
• Maddy D, Passmore DG, Lewis SG. Fluvial Morphology and Sediments: archives of past fluvial system response to global change. In: Gregory KJ; Benito G, ed. Palaeohydrology: Understanding Global Change. Wiley Interscience, 2003, pp.273-290.
• Barber K, Chambers F, Maddy D. Holocene palaeoclimates from peat stratigraphy: Macrofossil proxy climate records from three oceanic raised bogs in England and Ireland. Quaternary Science Reviews 2003, 22(5-7), 521-539.
• Westaway R, Pringle M, Yurtmen S, Demir T, Bridgland D, Rowbotham G, Maddy D. Pliocene and Quaternary surface uplift of western Turkey revealed by long-term river terrace sequences. Current Science 2003, 84(8), 1090-1101.
• Avsejs LA, Nott CJ, Xie SC, Maddy D, Chambers FM, Evershed RP. 5-n-Alkylresorcinols as biomarkers of sedges in an ombrotrophic peat section. Organic Geochemistry 2002, 33(7), 861-867.
• Maddy D. An evaluation of climate, crustal movement and base level controls on the Middle-Late Pleistocene developmet of the River Severn, UK. Geologie en Mijnbouw/Netherlands Journal of Geosciences 2002, 81(3-4), 329-338.
• Westaway R, Maddy D, Bridgland DR. Flow in the lower continental crust as a mechanism for the Quaternary uplift of southeast England. Quaternary Science Reviews 2002, 21, 559-603.
• Westaway R, Maddy D, Bridgland D. Flow in the lower continental crust as a mechanism for the quaternary uplift of south-east England: Constraints from the Thames terrace record. Quaternary Science Reviews 2002, 21(4-6), 559-603.
• Bridgland DR, Maddy D. Global correlation of Late Cenozoic fluvial deposits. Netherlands Journal of Geosciences 2002, 81, 265-282.
• Bridgland D, Maddy D. Global correlation of long quaternary fluvial sequeces: A review of baseline knowledge and possible methods and criteria for establishing a database. Netherlands Journal of Geosciences 2002, 81(3-4), 265-281.
• Maddy D, Macklin MG, Woodward JC. Fluvial archives of environmental change. In: River Basin Sediment Systems - Archives of Environmental Change. 2001, Cheltenham, UK: AA Balkema.
• Lewis SG, Maddy D, Scaife RG. Fluvial response to rapid environmental change: a case study from Ashton Keynes, Upper Thames valley, UK. Global and Planetary Change 2001, 28, 341-359.
• Maddy D, Woodward J, Macklin MG. River Basin Sediment Systems: Archives of Environmental Change. Abingdon: A.A. Balkema, 2001.
• Maddy D, Bridgland D, Westaway R. Uplift-driven incision and climate-controlled river terrace development in the Thames Valley, UK. Quaternary International 2001, 79, 23-36.
• Maddy D, Bridgland D. Accelerated uplift resulting from Anglian glacioisostatic rebound in the Middle Thames Valley, UK?: Evidence from the river terrace record. Quaternary Science Reviews 2000, 19(16), 1581-1588.
• Maddy D, Bridgland D, Green C. Crustal uplift in southern England: Evidence from the river terrace records. Geomorphology 2000, 33(3-4), 167-181.
• Nott CJ, Schucheng X, Avsejs LA, Maddy D, Chambers FM, Evershed RP. Lipid biomarkers in Ombrotrophic Mires as Proxy Climate Indicators. Organic Geochemistry 2000, 31(2-3), 231-235.
• Xie S, Nott C, Avsejs L, Volders F, Maddy D, Chambers F, Gledhill A, Carter J, Evershed R. Palaeoclimate records in compound-specific δD values of a lipid biomarker in ombrotrophic peat. Organic Geochemistry 2000, 31(10), 1053-1057.
• Barber K, Maddy D, Rose N, Stevenson AC, Stoneman R, Thompson R. Replicated proxy-climate signals over the last 2000 yr from two distant UK peat bogs: New evidence for regional palaeoclimate teleconnections. Quaternary Science Reviews 2000, 19(6), 481-487.
• Maddy D. English Midlands. In: Bowen DQ, ed. A revised correlation of Quaternary deposits in the British Isles. 1999, pp.28-44.
• Maddy D, Lewis S, Keen D. Pleistocene palaeomeanders of the River Avon, Warwickshire. Proceedings of the Geologists' Association 1999, 110(2), 163-172.
• Maddy D. Reconstructing the Baginton River Basin and its implications for the early development of the River Thames drainage system. In: Andrews P; Banham P, ed. Late Cenozoic Environments and Homonid Evolution: a tribute to Bill Bishop. London: Geological Society, 1999, pp.169-172.
• Maddy D. Uplift-driven valley incision and river terrace formation in southern England. Journal of Quaternary Science 1997, 12(6), 539-545.