Tide-induced geometrical changes in Chilika lagoon using remote sensing

摘要

This article presents hourly data from four tide gauge locations in the Chilika lagoon vis-a-vis satellite data, to study the tidal influences on the geometrical changes in the lagoon. The satellite-derived highest area and perimeter are 864.76 km(2) and 1512 km respectively, consistent with the field-observed occurrences of the low and high tides. The geometrical changes of 5.4% (44.36 km(2)) in area, and 24.8% (300.83 km) in the perimeter, in one month duration, solely because of the tides are considerable changes. High radiometric resolution of the sensor provided improved delineation of land-water boundary of the lagoon shores.