PROBABILISTIC SEISMIC HAZARD ANALYSIS OF SOUTH-WESTERN NIGERIA

Oluwafemi, John and Ofuyatan, Olatokunbo M. and Oyebisi, S.O and Alayande, T and Tumba, Masi (2018) PROBABILISTIC SEISMIC HAZARD ANALYSIS OF SOUTH-WESTERN NIGERIA. International Journal of GEOMATE, 15 (52). 16 - 22. ISSN 2186-2990

PDF Download (534Kb)

Abstract

For about ten decades, the seismic record of Nigeria has shown the occurrence of several magnitudes of earthquakes. This is contrary to the belief of some people in time past that Nigeria is aseismic. In number and in size, most of the witnessed earthquakes in Nigeria are found to occur in her South-Western region. Researchers have also begun to warn recently that some regions of Nigeria should prepare for devastating earthquakes in years to come. Hence this paper aimed at the probabilistic seismic hazard analysis of the South-Western region of Nigeria using the available historical and instrumentally recorded data. The Gutenberg-Richter (G-R) recurrence law was used to assess the seismicity parameters and to generate a model for calculating the mean annual rate of exceedance and to forecast probable future earthquake occurrence in the South-West. The findings of this assessment established that the South-West region of Nigeria is likely to experience earthquake magnitude as high as 7.2 in the year 2028 with a probability of 36.79%. Hence, this work enlightens on the extent of probable future earthquake magnitude in South-Western Nigeria and it is recommended that the government of Nigeria and inclined agencies begin to look into earthquake in this region.

Item Type:	Article
Uncontrolled Keywords:	Earthquakes, Magnitudes, Recurrence Interval, Assessment, Intensity
Subjects:	T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User:	Mrs Hannah Akinwumi
Date Deposited:	02 Oct 2018 11:23
Last Modified:	02 Oct 2018 11:23
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/11953

Actions (login required)

View Item