Modelling remediation scenarios in historically mined catchments

Javier Garcia-Perez Gamarra, Paul Brewer, Mark Macklin, Katherine Joanne Martin

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Abstract

Local remediation measures, particularly those undertaken in historical mining areas, can often be ineffective or even deleterious because erosion and sedimentation processes operate at spatial scales beyond those typically used in pointsource remediation. Based on realistic simulations of a hybrid landscape evolution model combined with stochastic rainfall generation, we demonstrate that similar remediation strategies may result in differing effects across three contrasting European catchments depending on their topographic and hydrologic regimes. Based on these results, we propose a conceptual model of catchment-scale remediation effectiveness based on three basic catchment characteristics: the degree of contaminant source coupling, the ratio of contaminated to noncontaminated sediment delivery, and the frequency of sediment transport events.
Original languageEnglish
Pages (from-to)6952-6963
Number of pages12
JournalEnvironmental Science and Pollution Research
Volume21
Issue number11
Early online date03 Oct 2013
DOIs
Publication statusPublished - 01 Jun 2014

Keywords

  • CAESAR landscape evolution model
  • TRACER
  • mine remediation
  • stochastic rainfall simulation
  • sediment-associated contaminant dispersal

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