I am planning to get SYSCAL R1 plus or SYSCAL Junior , and trying to understand, if we can use either one for a depth of 200 m. When water table is at ~20m. The top soil is alluvium.
Hi Sumit,
It's been a while since I worked on geoeletric methods, but I was asked some friends about it. While they think the configuration you suggested would not be enough for a multi-electrode resistivity imaging, it should be enough for vertical electrical sounding. The survey here has a SYSCAL Pro and sometimes quality drops after 50 m depth for resistivity imaging , so it would be hard to reach 200 m with a weaker equipment.
Maybe you saw this, but in case you haven't: http://www.iris-instruments.com/Pdf_file/Resistivity_Imaging/methods_depth_investigation.pdf has some information too.
Well,
Article Geo-Electrical Investigation of Mullusi Aquifer, Rutba, Iraq
Regards
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