Journal
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
Volume 58, Issue 3, Pages 316-321Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.dsr.2011.01.001
Keywords
Sargassum; Rafting macroalgae; Hyperspectral imagery; Remote sensing reflectance; Infrared imagery; Florida Current, USA
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Funding
- Office of Naval Research
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Airborne hyperspectral and thermal infrared imagery collected over the Florida Current provide a view of the disintegration of a Sargassum drift line in 5 m s(-1) winds. The drift line consists mostly of rafts 20-80 m(2) in size, though aggregations larger than 1000 m(2) also occur. Rafts tend to be elongated, curved in the upwind direction, and 0.1-0.5 degrees C warmer than the surrounding ocean surface. Long weed 'trails' extending upwind from the rafts are evidence of plants dropping out and being left behind more rapidly drifting rafts. The raft line may be a remnant of an earlier Sargassum frontal band, which is detectible as an upwind thermal front and areas of submerged weed. Issues are identified that require future field measurements. Published by Elsevier Ltd.
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