This is a composite image of four SAR internal wave images taken at
four different wavelengths from three different aircraft.
(Click on the image again to see a higher resolution version.)
The source ship is travelling from right to left in these images.
The internal waves are clearly visible.
The bright spots in the upper left of the images are instrumentation
platforms. The bright rectangle in the upper middle of the images
are salmon pens on the side of the loch.
This image, from the MIT/Lincoln Lab Ka-band SAR, was taken
on August 11, 1989 16:40 UTC. It shows the wake of the RMAS Roysterer
traveling at 6.1 m/s. The center of this image corresponds to an
incidence angle of 30 degrees.
This image has been expanded in height (range) by a factor of 2
relative to its width (azimuth). Features to note are the outer cusps of the
surface Kelvin wake, the meandering centerline wake with the lower edge turning
from white to black and the transverse Kelvin waves visible within the
centerline wake. The faint straight line just above the centerline wake is part
of the internal wave wake.
Click here to see the results of our analysis of these wakes and comparison with models.
Internal wave signatures were also studied in the Joint Ocean Wave Imaging Project (JOWIP).
