Green, S. A. Michigan Technological University,
Vodacek, A. A. Rochester Institute of Technology, Chester F. Carlson Center for Imaging Science, vodacek@cis.rit.edu

 
KITES: GRADIENTS IN LIGHT ABSORBING AND SCATTERING MATERIALS ASSOCIATED WITH THE THERMAL BAR AND KEWEENAW CURRENT IN LAKE SUPERIOR
 
Vertical profiles of downwelling irradiance and upwelling radiance were measured along the KITES transects across the thermal bar and Keweenaw Current. Hydrocasts and water samples yielded determinations of temperature, conductivity, particle absorption, chl fluorescence, CDOM absorption, and DOC. Spectral attenuation coefficients obtained from the irradiance profiles are compared to the sum of light absorption by particles, CDOM and water. The importance of scattering to total attenuation is assessed by the difference between the total attenuation and the sum of the absorptions. In general, scattering is a very small component of the attenuation in the lake. However, within the well defined plumes of the Ontonagon River and the North Entry, particle scattering was a significant portion of the attenuation. In the vertically mixed waters beyond the thermal bar a secchi depth of 21 m was recorded.
 
Day: Thursday, Feb. 4
Time: 02:45 - 03:00pm
Location: Eldorado Hotel
 
Code: SS52TH0245E