Forward and inverse modeling - The Seismoelectric Method - page 130

Electric potential at = 185 ms Electric potential at t = 189 ms Electric potential at = 193 ms Electric potential at = 197 ms

-50
-100
-150
-200
-250
-300
-350
-400
-450
-500
-550

-50
-100
-150
-200
-250
-300
-350
-400
-450
-500
-550

-50
-100
-150
-200
-250
-300
-350
-400
-450
-500
-550

-50
-100
-150
-200
-250
-300
-350
-400
-450
-500
-550

-0.06 -0.04 -0.02 0 0.02 0.04 0.06 -0.06 -0.04 -0.02 0 0.02 0.04 0.06 -0.06 -0.04 -0.02

Electric potential (mV)

0 0.02 0.04 0.06 -0.06 -0.04 -0.02

Electric potential (mV)

0 0.02 0.04 0.06

Electric potential (mV) Electric potential (mV)

Electric potential at = 201 ms Electric potential at = 205 ms Electric potential at = 209 ms Electric potential at = 214 ms

-50
-100
-150
-200
-250
-300
-350
-400
-450
-500
-550

-50
-100
-150
-200
-250
-300
-350
-400
-450
-500
-550

-50
-100
-150
-200
-250
-300
-350
-400
-450
-500
-550

-50
-100
-150
-200
-250
-300
-350
-400
-450
-500
-550

-0.06 -0.04 -0.02 0 0.02 0.04 0.06 -0.06 -0.06 -0.04 -0.04 -0.02 -0.02 0 0 0.02 0.02 0.04 0.04 0.06 0.06 -0.06 -0.04 -0.02 0 0.02 0.04 0.06 0 0.02 0.04 0.06

Electric potential (mV) Electric potential (mV) Electric potential (mV) Electric potential (mV)

Figure 4.21 Vertical distribution of the electrical potential (in mV, reference at infinity) in borehole #2 at different times in the SC-time
window in which the seismoelectric conversions taking place between the two boreholes occur (shot #3).