A study of environmental radon concentration anomalies for earthquake prediction in Southern Ghana

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Radon concentrations in relation to seismic activity have been monitored on a 1 km2 piece of land situated at Tuba, a village which is about 22 km from Accra, off the Accra-Winneba trunk- road. This area is known to be within the most seismically active zone along the coast of West Africa. The CR-39 and the can technique were used. Three diffident sets of measurements were made. The mean Radon concentration values obtained were as follows: 8.67 ± 0.11 kBq m-3 , for the period 25th November – 16th December, 1996; 4.21 ± 0.08 kBq m-3, for the period 10th February – 3rd March, 1997; 3.64 ± 0.06 kBq m-3, for the period 4th – 25th March, 1997. The rather anomalous value of 8.67 ± 0.11 for the period 25th November -16th December, 1996 was most likely due to a precursory Radon emanation of the Jar1rr7 8, 1997 earthquake event. The overall range and mean radon concentrations for the whole period of survey were 2.00 - 9.99 kBq m-3 and 5.51 ± 0.08 kBq m-3 respectively.
A thesis submitted to the Board of Postgraduate Studies, Kwame Nkrumah University of Science and Technology, Kumasi, in partial fulfilment of the requirement for the award of the Degree of Master of Science in Physics, 1997