Author/Authors :
Sravanthi، N نويسنده Centre for Earth & Space Sciences , , Ramana، I.V نويسنده National Remote Sensing Centre , , Yunus Ali، P نويسنده Centre for Earth & Space Sciences , , Ashraf، M نويسنده Central Institute of Fisheries Technology , , Ali، M.M نويسنده National Remote Sensing Centre , , Narayana، A.C نويسنده Department of Marine Geology & Geophysics, Cochin University of Science & Technology, Cochin-682 016, India ,
Abstract :
This study presents an empirical relationship of suspended sediment concentrations (SSCs) in
the coastal waters, which is derived from the conventional methods, to radiometer remote sensing reflectance
values (R
rs
) and satellite data in coastal waters of Kerala. An algorithm is then developed to utilize both in situ
SSCs measured from conventional methods and R
rs values. This algorithm is validated with the SSCs retrieved
from Oceansat-2 Ocean Colour Monitor (OCM) data. A significant coefficient of determination (R2=0.62) is
observed between the SSCs measured in situ and satellite derived SSCs. Reflectance values from more than two
spectral wavelength bands are also employed to test the accuracy of results. Satellite derived SSCs range from
1- 40 mg/L in the coastal waters off Cochin, southwest India. The regional algorithm developed for the study
area gives better results than Tassan’s algorithm, and this algorithm can be used in estimation of SSC for coastal
waters of western India.
