04/24/2014 - 4:00pm to 5:00pm
Please join us for the following AOS Seminar on Thursday, April 24 at 4:00PM in Spiess Hall Room 330:
Speaker: Justin Haag, Scripps Institution of Oceanography
Development of low-light radiometers for deep sea ambient light measurement
Ambient light at mesopelagic depths is of interest both physically and biologically. Recent radiative transfer simulations show that downwelling irradiance away from the peak ocean wavelength decreases with depth much more slowly than is generally assumed. Spectrally-limited (475 nm and 560 nm) low-light radiometers were developed to enable comparative measurements of ambient light below 200 m. The instruments were successfully deployed in early April 2014 at two deep stations off the coast of San Diego. Preliminary results indicate that there is indeed a significant amount of light present at longer wavelengths. Implications for biological vision and camouflage will be explored in future work.
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