Geostatistical investigation and ambient radiation mapping of Akure north and south local government areas of Ondo state, Nigeria.

Dinyo Enoch Omosehinmi , Prof. Adeseye Muyiwa Arogunjo

Ambient Radiation; Dose Rate; Kriging; Inverse Distance Weighting; Cosmogenic; Akure

The need for geostatistical estimation and mapping of ambient radiation prevalence in Akure North and South Local Government Areas of Ondo State, Nigeria prompted dose rate assessment at 166 selected sample locations in these areas. Global Positioning System (GPS) and Geiger-Muller Counter (GMC) were respectively used for location identification and dose rates measurement within an interval of 1-1.5km. The dose rates were measured at 1m above the ground level. The values of Dose Rate (DR) in air, and Annual Dose Rate (ADR) in air ranged from 0.16±0.01 to 0.37±0.04 μSν⁄h and 1.40±0.09 to 3.24±0.35 mSν⁄y respectively. The mean dose rate and mean annual dose rate in air are 0.26±0.03 μSν⁄h and 2.28±0.26 mSν⁄y. The measured DR and calculated ADR was processed in ArcGIS and Surfer, using Inverse Distance Weighting (IDW) and Kriging interpolation to produce delineation maps of ambient radiation, in 2D and 3D. Only about 1% of the variation in dose rate is explained by spatial data- elevation, latitude and longitude, which suggest very weak correlation between DR and spatial data(s). All dose rates are within the limit of internationally accepted Ambient Radiation levels; it poses no health effect on the general public.

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"Geostatistical investigation and ambient radiation mapping of Akure north and south local government areas of Ondo state, Nigeria.", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.1, Issue 12, page no.122 - 136, December-2016, Available :https://ijsdr.org/papers/IJSDR1612025.pdf

Volume 1 Issue 12, December-2016

Pages : 122 - 136

Paper Reg. ID: IJSDR_160974

Published Paper Id: IJSDR1612025

Downloads: 000347038

Research Area: Physics

Country: Akure, Ondo, Nigeria

Published Paper PDF: https://ijsdr.org/papers/IJSDR1612025

Published Paper URL: https://ijsdr.org/viewpaperforall?paper=IJSDR1612025

ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Publisher: IJSDR(IJ Publication) Janvi Wave

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