STS068-231-36
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Spacecraft nadir point: 28.3° N, 110.6° W

Photo center point: 27.0° N, 111.5° W

Nadir to Photo Center: Southwest

Spacecraft Altitude: 117 nautical miles (217km)
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Image Caption: Internal waves heading south toward Bahia Conception
in the Gulf of California Internal waves are generated by tides
generated and travel along the density discontinuity at the bottom of
the mixed layer depth. There is very little evidence of the internal
waves at the surface; about a 1.5 inch change in sea surface height.
We can see them in the Space Shuttle photos because of sunglint which
reflects off the water. The internal waves smooth out some of the
capillary waves at the surface in bands. The sun reflects more
brightly from these smooth areas showing us the pattern of the
underwater waves. Underneath the surface these waves have been
measured to have amplitudes of 50 to 200 feet, and are approx. 100 to
150 feet below the surface or at the depth of the density interface,
which can be 1000 feet deep in some oceans.