address to use for surveys the induced polarisation ip method ppt download 4254
{"Image DocumentName": "Small IP surveys often use porous-pot type electrodes", "Image ImageDescription": "Induced Polarisation. Reconnaissance or deep IP surveys often use large current electrodes buried in deep, saline-filled holes (Hence the benefit of electrode arrays where the current electrodes do not need to be moved for each reading). Small IP surveys often use porous-pot type electrodes. Traditionally, special kinds of electrodes were used, so-called porous pot electrodes. If one were to use metal stakes as SP electrodes, electrochemical contact-potentials would build up at the ground contacts which results in high noise levels. Therefore non-polarising electrodes are used. These consist of a metal immersed in a saturated solution of its own salt (e.g. Cu in CuSO4) which is contained in a porous pot that allows the solution to leak slowly and make contact with the ground. (Telford, 1990)", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}