Summary of Abstract Submission

Abstract Submission No. IO50-03-0031PresentationPoster

ANALYSIS OF SHORELINE CHANGES ALONG MUMBAI COAST, INDIA

Mani Murali.R*1, Riyas M.J1

1 CSIR , National Institute of Oceanography, India

ABSTRACT :

The seven Islands of Mumbai were made as a single mass by the mid of 18th century by reclamation. The population of around 10,000 before the reclamation has increased to more than 12 million by 2011. While Mumbai became one of the most populated and densest cities in the world, more lands were reclaimed and still continue. Monitoring the shoreline & its change is an ideal way to monitor the coastal land reclamation activities, erosion of coastal regions and the expansion of the city. Geographic Information System (GIS) and remote sensing techniques provided adequate information to understand the long term changes of the coast by analysing spatial - temporal data. Landsat MSS, TM, ETM+ and OLI &TIRS satellite images from 1972 to 2015 and toposheets were used to understand the shoreline dynamics. This study reveals that the accretion is dominant in the creeks and erosion in open coast regions. From 1972 to 2015, maximum accretion of 1466 m is recorded at Trombay region due to land reclamation. High erosion is observed from Malad creek to Juhu beach and at Dharvali. Maximum erosion of 220 m is observed at the southern parts of Juhu beach. Mudflats have increased along the creeks supported the growth of mangroves. Maximum accretion of 939 m recorded at Bhabha Atomic Research Centre (BARC) in the Thane creek. The seasonal erosion/ accretion and other natural shoreline shifts are also analysed in this study.