Regional map and instrument locations. Bathymetry (in meters) is shown for the north-eastern Gulf of Mexico. Acoustic Doppler current profiler (ADCP) moorings are denoted in black dots (M1 to M6). The yellow triangle is Buoy 42040, National Data Buoy Center. Hurricane Ivan's path is indicated by the dashed red line. Two inserts in the expanded map are a colorized infared image of Hurricane Ivan taken by the National Oceanic and Atmospheric Administration's GOES-12 satellite (lower right) and a Barny mooring containing the ADCP current meter (upper right). Credit: Science