Bottom Tripod System

The bottom photographs shown in this Apple Quicktime time-series movie (~30Mb) were obtained by means of a 35 mm Benthos camera mounted approximately 2 m above bottom on a tripod frame (photo). The pictures were obtained nominally every four hours(3 hours 59 mins in this deployment). The field of view is approximately 1 m by 1.5 m. True north is to the top of the screen. A compass and vane mounted on a swivel, showing the orientation of the tripod and instantaneous direction of flow, are partially visible in the photos (the vane is often out of the field of view, and the glare of the strobe on the glass dome housing the compass limits the time that the magnetic north arrow is visible).