Browsing by Author "Lewin, John"

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  • Lewin, John; Macklin, Mark G. (2008-08-01)
    Alluvial systems are complex, self-organizing and hierarchical in structure. They represent stored and transitory sediment bodies transported by rivers that have eroded their catchments and created multiscalar landforms ...
  • Macklin, Mark; Lewin, John; Jones, Anna Frances (2014-06)
    An exploratory meta-analysis of 14C-dated Holocene anthropogenic alluvium (AA) in the UK is presented. AA units were categorized by grain size, catchment area and location, depositional environment, and according to ...
  • Gregory, Kenneth J.; Lane, Stuart N.; Lewin, John; Ashworth, Philip J.; Downs, Peter; Kirkby, Michael J.; Viles, Heather A. (2014-03-30)
    The British Society for Geomorphology (BSG), established as the British Geomorphological Research Group (BGRG) in 1960, is considering how best to represent geomorphology and geomorphologists in the light of recent changes ...
  • Lewin, John; Ashworth, Philip J. (2014-06-15)
    Large rivers have anabranching channels with components that may be defined as braided, meandering or straight. This paper shows that application of such holistic terminologies is complicated by recognition of within-type ...
  • Lewin, John (2014-12)
    English floodplains are platforms for flood risk vulnerability; they are varied in form and in the timing of their development, both naturally and in terms of human occupation. An understanding of floodplain generation is ...
  • Lewin, John; Macklin, Mark (2014-01)
    The value of a formally defined Anthropocene for geomorphologists is discussed. Human impacts have been diachronistic, multifaceted and episodic, as demonstrated by the record of alluvial deposition in the UK. Rather than ...
  • Lewin, John (2011-06-13)
    Because of their varying channel styles (braided, meandering, and anastomosing) medieval lowland floodplains in England and Wales provided varying opportunities for defense, settlement, river crossing, and resource ...
  • Wiel, Marco J. Van De; Coulthard, Tom J.; Macklin, Mark G.; Lewin, John (2011-01)
    Over the last decade several computational models, and several types of model, have been developed to simulate the response of river systems to environmental change over time scales of decades to millennia: hydrological ...
  • Lewin, John; Ashworth, Philip J. (2014-02)
    Large floodplains have multiple and complex negative relief assemblages in which depressions fall below local or general floodplain surfaces at a variety of scales. The generation and dynamics of negative relief along major ...
  • Macklin, Mark; Lewin, John; Jones, Anna Frances (2013-09-15)
    A meta-analysis of a large database of 14C dated fluvial units is used to assess the chronology and controls of episodic Holocene river entrenchment and terrace formation in the UK. Most Holocene terraces are of a ‘fill-cut’ ...