Identification of Fishing zone by Remote Sensing

Remote sensing methods have helped greatly in the optimisation of ocean resources. As 60 to 70 per cent of the world's population live within 20-30 km of the coastline, coastal zone management and optimisation of ocean resources have grown in importance. With the advent of remote sensing methods using satellite and aerial survey, the data coverage and accessibility have increased. Several parameters relating to the oceans including fisheries can be studied using satellite and aircraft data.

While other ocean related applications have become possible on remotely sensed data from satellites, on a near real-time basis, here, it has been shown how a particular satellite and the sensor mounted on it have been used to obtain sea surface temperature and map it, on a regular basis, and pass it on to the fishermen who could concentrate on high potential areas and improve the catch.

The ocean colour as measured by the sensor is found to bear a direct relationship with the suspended material of the water, thermal characteristics and the location of greenish biological matter. One of the important parameters that can be measured with sufficient accuracy is the Sea Surface Temperature (SST), which has related to the concentration of fish population. This is an example of how a high technology has been applied at the grass-root level increasing the earning capacity by increased fish catches.

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