9 36.77472 67.31586 338 TW 95 22 2880 8.04 17.3 10 36.77619 67.31621 339 TW 90 23 5370 8.2 18 11 36.77839 67.30784 338 TW 110 22.5 2980 8.9 18 12 36.78145 67.30717 337 TW 123 23.2 2950 8.4 17 13 36.78693 67.30583 337 TW 105 105 3080 8.4 17.4 Note: Ele = Elevation Figure Groundwater level and salinity distribution 4. Vertical electrical sounding survey 4.1 Vertical Electrical sounding method In this method the applied Schlumberger techniques was used. Current was transmitted into the ground from DC or low frequency sources by two electrodes (A and B) and the potential difference between a second pair of electrodes (M and N) was measured (figure 4). Figure 4 Vertical Electrical Sounding Method Apparent resistivity value is calculated: Pa= K V / I Where: is the apparent resistivity Pa K is the geometric factor, V is a voltage or potential difference between a second pair of electrodes in volts Iis the current from DC or low frequency sources by two electrodes in ampere. The field data interrelated according to the following resistivity scale for water and rocks (see figure 5). Figure 5 Resistivity scale for water and rocks 4.2 Field study On18 -20 November 2012, 8 Vertical Electrical sounding (VES) profiles (VES-1, VES-2, VES-3, VES-4, VES-5, VES-6, VES-7 and VES-8) were performed in Camp SakhiTown,Nahr- of Balkh Province using Shlumbergerelectrodes arrangement.The lengths and locations of VES profiles are indicated in Table 2 and Figure 6. Table Location of VES Profiles NO Location Name VES Profiles LAT LON Elevation VES Length
9 36.77472 67.31586 338 TW 95 22 2880 8.04 17.3 10 36.77619 67.31621 339 TW 90 23 5370 8.2 18 11 36.77839 67.30784 338 TW 110 22.5 2980 8.9 18 12 36.78145 67.30717 337 TW 123 23.2 2950 8.4 17 13 36.78693 67.30583 337 TW 105 105 3080 8.4 17.4 Note: Ele = Elevation Figure Groundwater level and salinity distribution 4. Vertical electrical sounding survey 4.1 Vertical Electrical sounding method In this method the applied Schlumberger techniques was used. Current was transmitted into the ground from DC or low frequency sources by two electrodes (A and B) and the potential difference between a second pair of electrodes (M and N) was measured (figure 4). Figure 4 Vertical Electrical Sounding Method Apparent resistivity value is calculated: Pa= K V / I Where: Pa is the apparent resistivity K is the geometric factor, V is a voltage or potential difference between a second pair of electrodes in volts Iis the current from DC or low frequency sources by two electrodes in ampere. The field data interrelated according to the following resistivity scale for water and rocks (see figure 5). Figure 5 Resistivity scale for water and rocks 4.2 Field study On18 -20 November 2012, 8 Vertical Electrical sounding (VES) profiles (VES-1, VES-2, VES-3, VES-4, VES-5, VES-6, VES-7 and VES-8) were performed in Camp SakhiTown,Nahr- of Balkh Province using Shlumbergerelectrodes arrangement.The lengths and locations of VES profiles are indicated in Table 2 and Figure 6. Table Location of VES Profiles NO Location Name VES Profiles LAT LON Elevation VES Length
Geophysical%20survey%20in%20camp%20sakhi.docx