Mixing in Haro Strait

The first task after the cruise was to organize and calibrate the large quantities of acoustic and hydrographic data collected by the IOS group. Most of the dataset was then archived onto CD-ROMs to allow for easy distribution among co-investigators. A cruise report containing information about deployments and instrument logs, as well as summarizing preliminary results was written by Rich Pawlowicz, a post-doc working on this project. At this point Pawlowicz left to take up a position at the University of British Columbia. However, he remains closely linked with the analysis, with further assistance of Kevin Bartlett at IOS. The initial effort was concentrated on understanding the largerscale picture, and a theory has been developed by which CTD observations could be used to infer bulk mixing properties and transports using both heat and salinity as tracers. A second part of the analysis has proceeded to try and advance our grasp of the frontal mixing datasets by combining many disparate observations in an animation. This is proving particularly useful in attempts to integrate autonomous underwater vehicle (AUV) data with SEASCAN drifter and side-scan sonar data. The third part of the analysis component is being carried out by Rizhong Jiang who, in association with Farmer and Pawlowicz is seeking an interpretation of the active frontal process in terms of the underlying dynamics.