SIIBED: An Updated Subsea Iceberg Risk Model for the Grand Banks

As part of the SIIBED program, a subsea risk model for the Grand Banks was updated to reflect observed changes in the iceberg regime on the Grand Banks since the 1980s. This risk model is used to calculate interaction rates between free-floating and scouring icebergs and subsea infrastructure. The changes to the iceberg regime are described, along with the updates to the subsea risk model and changes in previously calculated iceberg interaction rates for a proposed facility. A methodology for integrating output from other SIIBED tasks into the risk analysis is outlined. Components of a source-to-sink model for understanding past changes in the iceberg regime, as well as future anticipated changes, are discussed.