Approach: Lagrangian particle tracking
•Simulate 3-D particle paths using flow fields from FVCOM (Chen et al. 2003)
•Define retention as the percentage of particles remaining in a region for a given time
- GOM or sub-regions
- 1 July to 1 January
•Environmental forcing
- alongshore, cross-shelf winds
- Scotian Shelf inflow
•Behavior
- passive, fixed-depth, density-      seeking