Modelling storm-event E. coli pulses from the Motueka and Sherry Rivers in the South Island, New Zealand

摘要: Storm-induced Escherichia coli pulses in the Motueka River (2074 km2) and Sherry (78.4 are modelled. The model focuses on catchment outlets, representing key processes, including E. transfer to from river bed, with account taken of hysteresis in, non-linear, non-stationary, response concentrations stormflows. fits observations well, but less well River. A greatly simplified description headwater riparian inputs is satisfactory at larger scale where near-field, in-channel processes dominate response. Spatial heterogeneity rainfall-run-off faecal sources probably contribute poorer fit smaller catchment. Despite using a relatively small number driving variables parameters, has potential predict real-time input Tasman Bay plumes causing shellfish bathing beach contamination.