Coastal processes

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Sediment transport measurements

Coastal engineers, physical oceanographers and geomorphologists generally carry out measurements of sediment transport using the following methods :

Wave refraction studies Determines places of wave convergence or divergence and provide quantitative measurement.

Using geomorphic indicators

Based on geomorphic indicators sediment transport direction is decided.

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Sedimentological methods.

Beach profile study, sediment budget measurement.

Sediment trap study Suspended sediments are collected in sediment trap and are measured

Artificial tracer tracking Sediment transport direction detected from the movement of artificial tracers.

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Conclusion

Coastal processes are highly unpredictable and is a challenge to coastal scientists.

Coastal processes are important in the case of

Prediction of environmental quality and impact

Habitat stability,

Public health risks,

Marine hazards such as ship grounding

Access to ports, seabed scouring

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Siltation of harbours, infill of reservoirs and artificial lakes

And in coastline protection.

It is very crucial to understand the nearshore physical system, the consequent impact on sediment dynamics, and the coastline’s response to it.

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Refernces

Robert G.Dean &Robert A.Dalrymple,Coastal processes with engineering applications,2002,04.

Walton Jr., T. L. and Bruno, R. O., Longshore transport at a detached break water, Phase II. J. Coast. Res., 1989, 5, 679–691.

U.S corps engineers, Coastal engineering manual.

www.googlebooks.com

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THANK YOU…………