To determine the rate of coastal erosion in a GIS environment (Accra Coast as a case study)

Thumbnail Image
Journal Title
Journal ISSN
Volume Title
Coastal erosion is gradually assuming an alarming state globally. Governments of various nations and non-governmental organizations are all becoming alert to the devastating effects of this problem. Measures have been put in place to combat this problem but these remedial measures have not been successful in most cases. According to the web site Spencer Rogers (2002), the act of using engineering means to solve coastal erosion problems has failed and should be discouraged. The coast of Accra is also having its share of this global problem of coastal erosion. This problem, which is very eminent to the eye, has received very little attention in the study area. Human acts, which contribute to the propagation of sea erosion, are practiced with no fear. Settlers along the coast continue to live in a state of panic as they find it difficult to imagine when the sea will catch up with them. Their businesses are being threatened in addition to their very lives. The coastal vegetation cover is all being lost at a faster rate as a result of the sea erosion. The coast is also losing its rich deposit of sand and this is affecting the marine turtle breeding activity in the study area. The Ghana Government’s investment drive, in the area of tourism along the coast, is also suffering from this problem of sea erosion. It is against this background that the research seeks to bring to light that, in spite of the Engineering remedial measures, coastal erosion persists. This has been done by determining the rate of coastal erosion along the Accra coast spanning over a period of thirty- (30) years.
A thesis submitted to the Board of Postgraduate Studies, Kwame Nkrumah University of Science and Technology in partial fulfilment of the requirements for the award of Master of Philosophy in Geodetic Engineering, 2003