Development of an effective methodology for marine pollution monitoring in an industrialized urban envirnoment: (A remotesensing approach)

The study area chosen for marine pollution monitoring was Thane Creek; near Bombay city; which essentially constitutes an industrialized urban setting. The area chosen within the Thane Creek, was between Vikhroli Creek and the Vashi Bridge in the south (approx. 75, kms.). Remote sensing technique was applied for assessing water quality parameters around Thane Creek in addition to conventional chemical analysis of samples collected during the pass of the satellite. The variation in the ranges of the water quality parameters chemically analyzed were: pH (6.67 - 7.94), Salinity (5.65 - 33.05 g/Kg), Turbidity (0.2 - 15.0 NTU), TSS (2.1 - 400 mg/L), TDS (850 - 38,500 mg/L), Temperature (24{degrees} - 30{degrees}C), and Colour (colourless-, green-, red-, or black). In the remote sensing studies. Turbidity and Temperature were quantified using Landsat TM data. An empirical approach of relating TM data to ground reference data for these parameters was employed through regression analysis. Two regression models were adapted namely Multiple Regression and Linear Regression. Comparative study between the two model techniques was carried out in order to arrive at the best possible method.