Journal
MARINE GEODESY
Volume 31, Issue 2, Pages 128-142Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01490410802092136
Keywords
SW Indian coast; beach erosion; beach volume changes; placer mining; littoral environmental characteristics; driving forces of beach processes
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The erosion/accretion pattern in a placer mining beach on the southwest Indian coast was monitored for five years to study the role of different driving forces. The beach has maximum width during the fair weather months and least in the rough monsoon months. Apart from hydrodynamic processes, sand mining and presence of sea wall are found to be the driving forces for erosion/accretion. Impact of sand mining is not felt on the beach when the mining is within an optimum level, equivalent to the natural replenishment. It is concluded that, though sand mining will cause erosion in the inner shelf, the time taken for a measurable impact can be long if the mining volumes are much less than the annual volume changes.
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