- Dona Paula, Goa, India.
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- iiosc2020[at]nio[dot]org
| Abstract Submission No. | ABS-2022-09-0260 |
| Title of Abstract | Mudbanks observations of Southwest coast of India using Synthetic Aperture Radar(SAR) |
| Authors | Santhosh Kumar S*, Reshma K N, Mani Murali R |
| Organisation | CSIR ⿿ National Institute of Oceanography, Goa |
| Address | CSIR ⿿ National Institute of Oceanography, Goa Dona Paula, Goa, India Pincode: 403004 Mobile: 9422593599 E-mail: mmurali@nio.org |
| Country | India |
| Presentation | Oral |
| Abstract | The mud bank formation in Kerala, the Southwest coast of India is a unique and annual phenomenon that occurs during South West Monsoon (SWM). A calm patch of highly turbid water with thick fluid mud at the near bottom helps in dampening monsoon-induced large waves and acts as a landing site for local fishermen to access the coast in rough monsoon weather. The mud bank forms during the onset of the monsoon and dissipates at the end of the monsoon. This study focuses on observing the mud bank using Synthetic Aperture Radar (SAR) images, the limitations of optical data due to the cloud cover during monsoon season, and determining the efficiency of SAR images. So, multi-temporal SAR images from Sentinel 1 satellite were used to identify the mud bank and its spatial variations from 2015 to 2019. The changes in the spatial extent of the mud bank throughout the phenomenon in a year and its inter-annual changes were estimated. This migration of the mud bank towards the south was found to be having a huge impact along the coastline. The shifting of the mud bank towards the south from the existing location was evident and an erosion rate of ~30m/yr was found in the Punnapra beach, a prevalent mud bank location. These spatial variations of the mud bank and the respective shoreline changes were quantified to evaluate the importance of the mud bank as a local phenomenon to the coastal community. |