Identifying Actions
To address knowledge gaps at the Iqaluit International Airport, scientists conducted geoscientific research of the airport’s permafrost conditions, its sensitivity to thaw settlement and the physical processes involved in the permafrost’s degradation. Scientists used a range of geoscience data to assess the conditions. This included ecological and surficial sediment mapping. Remote sensing of ground settlement was also used to identify potential hazards. These initiatives were supported by field validations, geophysical surveys and permafrost measurements. The hazard, direct costs, and indirect cost factors were determined from available site data, project documents (plans, earned value reports, project agreement), and stakeholder interviews. The hazard analysis used Monte Carlo simulation and standard permafrost engineering calculations to determine thaw settlements using a stochastic analysis. Human and societal impact factors were determined from rubrics and conversations with stakeholders. The results of the research translated into engineering decisions made by the Government of Nunavut and its partners, that will help prolong the life of a critical piece of northern infrastructure.