Termite mounds are conventionally surmised as one of the best bio-geological indicator for groundwater occurrence in places where they inhibit.Ground magnetic survey was carried out to prove the assumption about termi...Termite mounds are conventionally surmised as one of the best bio-geological indicator for groundwater occurrence in places where they inhibit.Ground magnetic survey was carried out to prove the assumption about termite mounds as an important indicator for groundwater exploration.Occurrences of 18 Termite mounds were mapped using handheld GPS to identify the suitable trend for magnetic survey.After considering all the criteria such as power lines,fences and fracture system,termite mound 2,12 and 18 were selected in the NNE-SSW trend,and the ground magnetic survey was conducted in ESE-WNW direction which is perpendicular to the trend of the termite mounds using Proton Precession Magnetometer.Totally,99 samples were collected with 5 m sampling interval and 50 m profile interval over an area of 22500 sq.m.The magnetic values varied from–7363 nT to 898 nT with the mean of–331 nT.Processed map of reduction to Equator indicates the presence of NNE-SSW and WNW-ESE magnetic breaks.Analytical signal map designated the presence of magnetic low in the WNW-ESE direction which coincides spatially with the magnetic breaks.The magnetic profile lines have also brought to light the structurally weak zones.Causative body depth range was estimated using power spectrum and Euler method which are from 120 m to 40 m and<20 m to>100 m,respectively.The present study appreciably brings out the spatial relationship between the termite mounds and the hydro-fractures.This confirms the assertion with regard to termite mounds as an effective tool for groundwater exploration.展开更多
This study is to determine the activities and correlations in the fundamental properties of the termite mounds soils Cubitermes spp and Macrotermes sp. The Intrinsic properties depend on the mineralogy, organic compos...This study is to determine the activities and correlations in the fundamental properties of the termite mounds soils Cubitermes spp and Macrotermes sp. The Intrinsic properties depend on the mineralogy, organic composition and texture of soil. Grain size, Atterberg limits and soil blue values are geotechnical properties that were used to characterize the two soils. On the basis of the geotechnical properties, specific surface area, cation exchange capacity, relative activity, surface activity and soil activity were determined. The correlations obtained in the intrinsic soil properties are linear and polynomial fits. Indeed, the relationship between the plasticity index and the blue value of a soil on the one hand and between the specific surface area and the cation exchange capacity on the other hand, is a linear fit for all soils in general. The relationship between plasticity index and specific surface area is a linear fit for the soils (C, M). Correlations in intrinsic soil properties that have a coefficient of determination close to 1 can be used in geotechnical engineering to predict one of the two desired parameters.展开更多
文摘Termite mounds are conventionally surmised as one of the best bio-geological indicator for groundwater occurrence in places where they inhibit.Ground magnetic survey was carried out to prove the assumption about termite mounds as an important indicator for groundwater exploration.Occurrences of 18 Termite mounds were mapped using handheld GPS to identify the suitable trend for magnetic survey.After considering all the criteria such as power lines,fences and fracture system,termite mound 2,12 and 18 were selected in the NNE-SSW trend,and the ground magnetic survey was conducted in ESE-WNW direction which is perpendicular to the trend of the termite mounds using Proton Precession Magnetometer.Totally,99 samples were collected with 5 m sampling interval and 50 m profile interval over an area of 22500 sq.m.The magnetic values varied from–7363 nT to 898 nT with the mean of–331 nT.Processed map of reduction to Equator indicates the presence of NNE-SSW and WNW-ESE magnetic breaks.Analytical signal map designated the presence of magnetic low in the WNW-ESE direction which coincides spatially with the magnetic breaks.The magnetic profile lines have also brought to light the structurally weak zones.Causative body depth range was estimated using power spectrum and Euler method which are from 120 m to 40 m and<20 m to>100 m,respectively.The present study appreciably brings out the spatial relationship between the termite mounds and the hydro-fractures.This confirms the assertion with regard to termite mounds as an effective tool for groundwater exploration.
文摘This study is to determine the activities and correlations in the fundamental properties of the termite mounds soils Cubitermes spp and Macrotermes sp. The Intrinsic properties depend on the mineralogy, organic composition and texture of soil. Grain size, Atterberg limits and soil blue values are geotechnical properties that were used to characterize the two soils. On the basis of the geotechnical properties, specific surface area, cation exchange capacity, relative activity, surface activity and soil activity were determined. The correlations obtained in the intrinsic soil properties are linear and polynomial fits. Indeed, the relationship between the plasticity index and the blue value of a soil on the one hand and between the specific surface area and the cation exchange capacity on the other hand, is a linear fit for all soils in general. The relationship between plasticity index and specific surface area is a linear fit for the soils (C, M). Correlations in intrinsic soil properties that have a coefficient of determination close to 1 can be used in geotechnical engineering to predict one of the two desired parameters.
