Airborne imagery of a disintegrating Sargassum drift line |
| |
| Authors: | George O Marmorino WD MillerGeoffrey B Smith Jeffrey H Bowles |
| |
| Institution: | a Remote Sensing Division, Naval Research Laboratory, Washington, DC 20375, USA
b Computational Physics Incorporated, Remote Sensing Division, Naval Research Laboratory, Washington, DC 20375, USA |
| |
| Abstract: | 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 m2 in size, though aggregations larger than 1000 m2 also occur. Rafts tend to be elongated, curved in the upwind direction, and 0.1-0.5 °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. |
| |
| Keywords: | Sargassum Rafting macroalgae Hyperspectral imagery Remote sensing reflectance Infrared imagery Florida Current USA |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
