It is well known that the induced polarization (IP) phenomenon is due to at least four known mechanisms, i.e. the so-called electrode polarization, electro-osmosis polarization, Maxwell-Wagner effect, although very weak, and membrane polarization due to presence of clay minerals in rock pores and/or by constrictivity, i.e. the polarization effect is due to change in pore size (Schön, 1996). Of course freshwater saturated pores is essential for the occurrence of the IP phenomena, on the contrary, increased concentration of dissolved salts affects negatively membrane polarization until its complete nullification at elevated concentrations,.
Membrane polarization by constrictivity of pores: its effects on DC and TEM geo-electromagnetic measurements
SANTARATO, Giovanni;ABU-ZEID, Nasser;BIGNARDI, Samuel
2014
Abstract
It is well known that the induced polarization (IP) phenomenon is due to at least four known mechanisms, i.e. the so-called electrode polarization, electro-osmosis polarization, Maxwell-Wagner effect, although very weak, and membrane polarization due to presence of clay minerals in rock pores and/or by constrictivity, i.e. the polarization effect is due to change in pore size (Schön, 1996). Of course freshwater saturated pores is essential for the occurrence of the IP phenomena, on the contrary, increased concentration of dissolved salts affects negatively membrane polarization until its complete nullification at elevated concentrations,.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
