A Self-Contained Facility for Analyzing Near-Bottom Flow and Associated Sediment Transport.

摘要

The field system described in this report was designed to monitor several aspects of the near bottom environment. The system can measure and record horizontal velocities at several levels within one meter of the ocean floor. Simultaneous measurements of wave pressure,mean current direction and turbidity can also be recorded. The recorded information is stored in digital format facilitating later analysis. The system is relatively inexpensive,flexible,and can be easily transported by small truck to the field location. Several experiments have been conducted with success in the New York Bight between May 1974and October 1975. These are summarized. Field operations are illustrated by a series of photographs. Preliminary analysis indicates that in the shallower experimental areas surface wave activity may have a significant effect on the flow field near the bottom even in slight seas.