Wave action or sub-aerial processes? The case of coastal features along the Gold Hill beach in Komenda, Ghana

Authors: ISHMAEL DADSON*, UNIVERSITY OF EDUCATION, WINEEBA
Topics: Coastal and Marine, Africa, Physical Geography
Keywords: Komenda, wave action, sub-aerial processes, erosion, accretion
Session Type: Paper
Day: 4/6/2019
Start / End Time: 8:00 AM / 9:40 AM
Room: Taylor, Marriott, Mezzanine Level
Presentation File: No File Uploaded


The study sought to examine the extent to which costal features along the Gold Hill beach in Komenda, Ghana had been modified from the actions of waves and sub-aerial processes. This is purely an exploratory research and thus made use of field measurements, digitization of satellite images and aerial photographs with field observation. Moreover, shoreline positions and changes along the coast between 1972 and 2013 were analysed to examine the extent of advancement and retreat of the shoreline. Thus, data was mainly presented in maps, photographs and statistical format. The study revealed that the entire coastline along the study area had been experiencing erosion than accretion. This means that the sea around Komenda had been advancing due to intense erosion between 1972 through 1995 until recent times, 2013 when accretion had become more dominant than erosion. It was also revealed that based on the distance between the higher water mark and the position of the coastal features, it is now difficult for wave action to directly impact on the features and landforms. There is general retreat and collapse of the cliff face, indicating that sub-aerial processes now have the greatest impact on the landforms than any other geomorphic activity. It is therefore recommended that more studies should be undertaken by researchers and academics to track the changes that occur along the coastline. This will help inform policy makers on the right strategies to be adopted to protect this coastal environment.

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