Date: 04/10/09

Speaker: M. Shen

Title: Wave Effect on the Underwater Irradiance Distribution

Abstract:
The wave effect on the underwater light field distribution is studied.  When the light
goes through regular waves from air, it will form  periodic diamond structure underwater.
The horizontal and vertical  dimensions of this structure are found to be governed by the
wave  parameters (wave length and wave steepness). We use these two  dimensions to be the
horizontal and vertical scales for underwater  irradiance field. Then we analyze the
irregular wave and find that  dominant wave length can be obtained from the light field.
Finally, a  critical wave focusing effect valid condition is obtained by letting 
scattering effect and wave focusing effect to be approximately equal.  When wave
dimension is beyond the critical value, the wave focusing effect is not important.