Application: The monitoring program at the Hyme field included measurements of ocean currents, temperature, salinity, turbidity and sedimentation of particles at the drilling location during the drilling operation. After drilling the environmental risk assessment was updated with actual current data and high resolution discharge data for the whole discharge period.
The results from the field measurements will be used for validation of the model simulations of dispersion and deposition of actual discharge of drilling particles in the vicinity of coral occurrences, in order to predict actual exposure and consequently potential effects or risk to the corals.
Results, Observation, and Conclusions: In the present paper a comparison between model simulations and field measurements is presented. The predicted particle exposure concentrations and burial of corals will be verified against turbidity and particle sedimentation measurements at different distances from the discharge points.
Significance or subject matter: A high level accuracy in the model simulations, as basis for assessment of potential impacts to biota, is of high importance. This enables the operator to evaluate alternatives with regards to drilling discharge solutions (discharge point etc.) with lowest impact on environmental resources at the drilling site prior to drilling