Publisher: Bachudo Science Co. Ltd

Temporal Variations In Beach Tar Concentration Along Ibeno Coastline, Nigeria

F. Emile Asuquo
KEYWORDS: Beach tars, temporal variation, Nigeria, environmental factors, beach development


The extent of accumulation and distribution of beach tars (weathered crude oil residues) along lbeno segment of the Nigerian coastline was investigated between 1989 and 1990. The beach tars were monitored at monthly intervals over a distance of 35km per trip and quantified by gravimetry. A seasonal or temporal variation existed in the pattern of tar distribution. While the highest concentration of tar (5.46gm-2 month'1) was recorded in June 1989, the lowest accumulation (0.02gm-2 month-1) occurred in November 1989. These observations showed that more tar was deposited in the wet season than the dry season. A pair-wise correlation analysis gave good correlation between beach tar and wind speed (r = 0.78, P < 0.05), beach tar and total rainfall (r == 0.55, P < 0.05) thereby identifying wind speed and precipitation as the principal environmental factors influencing the patrem of tar distribution along the coastline. The observed temporal trend and information is a reliable too] when executing environmental management plan for the protection of the beach against· shoreline erosion and for beach development for recreation and tourism

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