Spotlight
On:Underwater Optics - the algae that form the base
of the Lake Superior food pyramid grow only to the maximum
depth of light penetration. Our ability to quantify primary
production in the lake and its ability to support fish populations
demands an understanding of the underwater light field. As
light penetrates the surface, particles scatter and reflect
the light back to the surface and algae, dissolved color (e.g.
humic and tannic acids) and water itself absorb color. The
various colors of the spectrum are disappear at different
depths, first red, then yellow and finally blue and green.
Scientists use a free fall hyperspectral scanner to measure
the disappearance (attenuation) of light with depth in the
water column.
Dr. Alan
Weidemann, Faculty, of the Naval Research Laboratory, Stennis
Space Center, Mississippi launching a device to compare data
from satellites to what could be measured on location.
The device is used to compare data
from satellites to what could be measured on location.
Mr. David
O'Donnell, Researcher from the Upstate Freshwater Institute,
Syracuse, NY, checking the live data feed from the optics
instrument.
Spotlight
On: 
