Applying Pattern Oriented Sampling in current fieldwork practice to enable more effective model evaluation in fluvial landscape evolution research

Rebecca M. Briant (Corresponding Author), Kim M. Cohen, Stephane Cordier, Alain J.a.g. Demoulin, Mark G. Macklin, Anne E. Mather, Gilles Rixhon, A. Veldkamp, John Wainwright, Alex Whittaker, Hella Wittmann

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)
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Field geologists and geomorphologists are increasingly looking to numerical modelling to understand landscape change over time, particularly in river catchments. The application of landscape evolution models (LEMs) started with abstract research questions in synthetic landscapes. Now, however, studies using LEMs on real‐world catchments are becoming increasingly common. This development has philosophical implications for model specification and evaluation using geological and geomorphological data, besides practical implications for fieldwork targets and strategy. The type of data produced to drive and constrain LEM simulations has very little in common with that used to calibrate and validate models operating over shorter timescales, making a new approach necessary. Here we argue that catchment fieldwork and LEM studies are best synchronized by complementing the Pattern Oriented Modelling (POM) approach of most fluvial LEMs with Pattern Oriented Sampling (POS) fieldwork approaches. POS can embrace a wide range of field data types, without overly increasing the burden of data collection. In our approach, both POM output and POS field data for a specific catchment are used to quantify key characteristics of a catchment. These are then compared to provide an evaluation of the performance of the model. Early identification of these key characteristics should be undertaken to drive focused POS data collection and POM model specification. Once models are evaluated using this POM/POS approach, conclusions drawn from LEM studies can be used with greater confidence to improve understanding of landscape change.
Original languageEnglish
Pages (from-to)2964-2980
Number of pages17
JournalEarth surface processes and landforms
Issue number14
Early online date26 Jun 2018
Publication statusPublished - 1 Nov 2018


  • landscape evolution modelling
  • geological field data
  • catchments
  • fluvial systems
  • Pattern Oriented Sampling
  • UT-Hybrid-D


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