Conclusion
The study investigated the urban sprawl phenomenon occurring along the Bangalore – Mysore highway and found that there has been an overall increase in the built-up area by 194%. The Bangalore North – South taluks having the highest percentage (559%) increase and Srirangapatna – Mysore with the lowest percentage (128%) change in built-up area. Further it was also found the change in built-up was high as the distance from Bangalore decreased. With the Shannon’s entropy analysis, the study could identify where the sprawl was taking place and its degree as well. The Bangalore North – South taluks showed higher value entropy indicating sprawl, while the Mandya – Maddur taluks showed lower entropy value indicating compactness or less dispersion. Further, it is seen that the Bangalore city was sprawling in radial direction (from the city centre) as well as linearly along the major roads. The study demonstrates GIS and remote sensing coupled with statistical analyses, such as arriving at Shannon’s entropy help immensely in spatial and temporal analyses for studying the sprawl and for delineating the regions with higher sprawl.

Acknowledgements
We thank ISRO – IISc Space Technology Cell for financial assistance to carry out field investigations and NRSA, Hyderabad for providing the satellite data required for the study. We are grateful to Ministry of Environment and Forests, Government of India and Indian Institute of Science for infrastructure support.  We thank Mr. Aswath and Mr. Kamal for their active participation in field data collection and in preparation of base layers.