SS3.03 Recent Advances in Coastal and River Plume Remote Sensing
Date: Thursday, June 13, 2002
Time: 2:45:00 PM
Location: View Royal
 
SalisburyJE, University of New Hampshire, Durham, USA, joe.salisbury@unh.edu
Campbell, J, W, University of New Hampshire, Durham, USA, janet.campbell@unh.edu
Vorosmarty, C, J, University of New Hampshire, Durham, USA, charles.vorosmarty@unh.edu
 
SPATIO-TEMPORAL DISTRIBUTION OF PLUME WATERS IN THE NORTHERN GULF OF MEXICO INFERRED BY COVARIANCE BETWEEN RIVERINE DISCHARGE AND WATER-LEAVING RADIANCE.
image
We introduce an index of fluvial influence (IFI), which is defined as the covariance between river discharge and water-leaving radiance measured by an ocean color satellite in the vicinity of the river mouth. The IFI is computed from time series of discharge matched with time series of satellite data and it is calculated for every pixel in the satellite image. These analyses have been run on 23 river discharge/ radiance data sets and the carry information on the spatial and temporal characteristics of riverine plumes in the northern Gulf of Mexico. We have also run several analyses in which radiance data lagged the discharge by varying time intervals ranging from 1 to 30 days. Preliminary results are promising and suggest a possible method to track the movement and persistence of sediment plumes and the delayed response of phytoplankton growth stimulated by the delivery of riverine nutrients.