Designed experiments and passive observations of DFG movement are needed to increase our overall understanding of the characteristics and behavior of DFG; tagging and telemetry combine
aspects of both and could be applied profitably to identified knowledge gaps. Because much DFG in the North Pacific, with the exception of buoys and floats, has been observed to be submerged
(authors, personal observation) the direct action of wind on DFG movement may be primarily realized in the action of surface currents.
Nonetheless, studies performed on leeway drift of watercraft and other items for the purpose of guiding search and rescue operations (e.g., Allen and Plourde, 1999) may be applicable for some
particularly buoyant types of DFG. The exploration of these methods for measuring leeway drift as applied to DFG—either through direct measurement or by analogy to similar items that have
already been measured—is recommended.
Designed experiments and passive observations of DFG movement are needed to increase our overall understanding of the characteristics and behavior of DFG; tagging and telemetry combine
aspects of both and could be applied profitably to identified knowledge gaps. Because much DFG in the North Pacific, with the exception of buoys and floats, has been observed to be submerged
(authors, personal observation) the direct action of wind on DFG movement may be primarily realized in the action of surface currents.
Nonetheless, studies performed on leeway drift of watercraft and other items for the purpose of guiding search and rescue operations (e.g., Allen and Plourde, 1999) may be applicable for some
particularly buoyant types of DFG. The exploration of these methods for measuring leeway drift as applied to DFG—either through direct measurement or by analogy to similar items that have
already been measured—is recommended.
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