Calculate Vp

Use the Calculate Vp option to calculate the potential field at the receivers from the electrode configuration and resistivity values.

Quality Control by Electrode dialog options

Apparent resistivity channel

Input resistivity channel name. This entry is mandatory.

Script Parameter: IP_CALCUALTE_VP.APPRES_CHANNEL

Current type

The current can be provided either as a channel or a constant.

Script Parameter: IP_CALCUALTE_VP.CURRENT_TYPE[1 – Channel specified ( default), 0 – value]

Current channel or

Current value

If you selected current channel above you will be prompted to provide the channel name. Otherwise you will be prompted to supply a single current value. If you have no knowledge of the current value or if you have an indication that it few different current intensities were used, you could enter a value or 1, in which case the output potential will be the normalized potential value.

Script Parameter:

IP_CALCUALTE_VP.CURRENT_CHANNEL

IP_CALCUALTE_VP.CURRENT_VALUE

Output Vp channel

Channel name for the output potential at the receivers. This entry is mandatory.

Script Parameter: IP_CALCUALTE_VP.OUTPUT_CHANNEL

Transmitter 1 & 2

Transmitter 1 is required for all IP configurations. Define the channel names for the coordinates of transmitter 1. If the configuration supports a second transmitter, proceed to enter the coordinates of transmitter 2.

Script Parameter:

IP_ SORTBYRXTXORDER.T1X, T1Y, T1Z

IP_SORTBYRXTXORDER.T2X, T2Y, T2Z

Receiver 1 & 2

Receiver 1 is required for all IP configurations. Define the channel names for the coordinates of receiver 1. If the configuration supports a second receiver, proceed to enter the coordinates of receiver 2.

Script Parameter:

IP_ SORTBYRXTXORDER.R1X, R1Y, R1Z

IP_ SORTBYRXTXORDER.R2X, R2Y, R2Z

Application Notes

The equations for calculating the Vp are:

Dipole-Dipole Vp:

Pole-Dipole Vp:

Pole-Pole Vp:

Where ρ is the resistivity.