Abstract
Application of underwater time-lapse motion picture cameras to the study of sediment transport phenomena provides an economical and quantitative tool for the investigation of sea floor processes. Two camera systems are described, one can be operated on the ocean bottom from a pier, boat or float and the second is completely self-contained, self-powered and divorced from surface support. Time-lapse photography was used to determine growth rates of scour pit development, migration of organisms, ripple crest advance and sediment dispersal patterns. Sea floor modification over several tidal cycles also was monitored with the self-contained unit for 47 hours of continuous activity.
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