TY  - JOUR
AU  - Afa, John Tarilanyo 
AU  - Anaele, C. M. 
PY  - 2010
TI  - Seasonal Variation of Soil Resistivity and Soil Temperature in Bayelsa State
JF  - American Journal of Engineering and Applied Sciences
VL  - 3
IS  - 4
DO  - 10.3844/ajeassp.2010.704.709
UR  - https://thescipub.com/abstract/ajeassp.2010.704.709
AB  - Problem statement: Due to the climatic variation for the year and it's sever harmattan
during the month of December to March with the high keraunic level (80-90) in the areas, it was
necessary to know the seasonal variation of soil resistivity. The seasonal variation and the nature of
soil have considerable influence on electrical characteristics and therefore affect the earthling system
performance. Approach: Eighteen sites were chosen from three main soil divisions. The soil
resistivity was taken in each of the site at depths of 0.5, 0.8 and 1.2 m using the four point test
instrument (Wenner Method). From the selected sites in the three soil divisions the temperature was
also taken at depths of 0.2, 0.5, 0.8 and 1.0 m. Results: The coefficient of seasonal variation at the
depth of 0.5 m was high and reduced drastically at a depth of 1.2 m. The soil temperature was higher
than the ambient temperature at the depth of 0.2 m during the months of December to March. From 0.8
m depth and below the temperature reduced even during the dry seasons. Conclusion: The coefficient
of seasonal variation of soil at the depth of 0.8 and 1.2 m was small (1.8-3.0) throughout the year in all
soil types. That indicates the high water level and or the permanent moisture table which gives an
advantage to low soil resistivity for buried conductors and electrodes in the area.