HR: 0800h
AN: ED51D-0042    [Abstracts]
TI: CDOM Characterization of River-Dominated Environments
AU: * Hastings, R H
EM: rhhastin@mail.usf.edu
AF: University of South Florida College of Marine Science, 140 7th Avenue South, St. Petersburg, FL 33701 United States
AU: Coble, P G
EM: pcoble@marine.usf.edu
AF: University of South Florida College of Marine Science, 140 7th Avenue South, St. Petersburg, FL 33701 United States
AU: Conmy, R N
EM: rconmy@seas.marine.usf.edu
AF: University of South Florida College of Marine Science, 140 7th Avenue South, St. Petersburg, FL 33701 United States
AB: Characterization of Colored Dissolved Organic Matter (CDOM) sources in nearshore environments can be challenging on river-dominated margins, such as the West Florida Shelf. These highly dynamic regimes exhibit not only chemical compositional differences between marine and riverine CDOM, but differences can also be resolved between rivers, as well. Through the use of spectroscopic techniques, such as absorption coefficients, spectral slopes, fluorescence intensity and ratios, multiple sources of this organic material can de determined to examine the seasonal changes in the coastal underwater light field. Discussed here will be a summary of the experiences of a first year undergraduate researcher in a marine spectroscopy laboratory from sample collection to data interpretation. Focus will be on the salinity-CDOM-DOC (Dissolved Organic Carbon) relationships from rivers in the Eastern Gulf of Mexico and seasonal cruises to the southern portion West Florida Shelf.
DE: 4806 Carbon cycling
SC: Education and Human Resourcese [ED]
MN: 2004 AGU Fall Meeting