Ocean modelling capabilities for input into acoustic models for shallow water choke points

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The proposed work aims to provide environmental parameters to acoustic models which will ultimately berequired at operational timescales. It is thought that other Arctic modelling research will also benefit. Activeand passive acoustic models require accurate representation of the ice profile which ASL will be providing bycombined use of Radarsat SAR and upward looking sonar data. Models also require the physical oceanographicconditions influencing the density structure and mobility of the water column: temperature, salinity andcurrents. Operationally these parameters can only be provided Arctic wide via models.The challenge for this work is to investigate model capabilities and application to acoustic requirements at ashallow water choke point. Here it is likely that high resolution model results will be necessary to representsufficiently accurately the physical ocean parameters across distances as small as 2-3 km. It is this scale, andability of the models to meet this requirement, that is to be investigated through this work.