Effect of Rainfall and Groundwater Level on Sandy Beach Profile

Abstract:

In Malaysia, rainfall distribution patterns are normally influenced by seasonal wind flow patterns coupled with local topographic features. Heavy rain spells and storms during the Northeast Monsoon will affect groundwater table elevation and the beach profile. The aim of this paper is to investigate the relationship between rainfall and groundwater elevation and their effect to beach profile change. This work was undertaken at the Desaru Beach, Johor. The rainfall, groundwater table, tides and beach profiles data were measured at the site. As a result, the findings revealed that the groundwater table is affected by rainfall intensity; higher during wet season and lower during dry season. Groundwater table near the coastline is also affected by the tides. However, the data showed that there is a lag time between rising and falling of groundwater table and tides. Finally, the beach profile was found to be eroded as the groundwater elevation increased on the beach.

• Periodical: Applied Mechanics and Materials (Volume 567)
• Pages: 32-37
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.567.32
• Online since: June 2014
• Authors: Ahmad Khairi Abd. Wahab*, Norasman Othman, Mohamad Hidayat Jamal, Shairul Rohaziawati Samat
• Keywords: Beach Profile Change, Field Experiment, Ground Water, Rainfall, Swash Zone

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