Author(s): Lam; M. Y. ; Ahmadian; R.

Linked Author(s):

Keywords: Faecal indicator organisms; Hydro-environmental models; Bacteria decay models; Swansea bay; Stapleton

Abstract: Contamination of nearshore coastal water has far-reaching consequences for public health and economy. Understanding the transport and fate of Faecal Indicator Organisms (FIOs) in these waters is important for protecting public health as well as evaluating water quality management strategies. Bacteria decay models are indispensable in hydro-environmental modelling of nearshore coastal waters. This research proposed modifications to a previously developed Stapleton bacteria model for Swansea Bay, UK, to remediate several model limitations, namely giving zero decay rate under no irradiation, which is against known experimental results, and does not include the effect of salinity. The modified Stapleton model was tested with a TELEMAC- 3D hydro-environmental model for the Bay against the original model. Model results were evaluated against field measured FIO concentrations. Results showed potential for the modified model, but the superiority of the modified model cannot be concluded. The study result also showed that the diurnal variation in the measured FIO concentration was not captured by all the models tested.

DOI: https://doi.org/10.3850/978-90-833476-1-5_iahr40wc-p1473-cd

Year: 2023