You are trying to use Electromagnetic Methods to investigate the structure of th

Question

You are trying to use Electromagnetic Methods to investigate the structure of the water table, which is in a sand and gravel unit that you estimate is at about 50 m depth. Above this (to the surface) is a clay unit with a conductivity of about 200 mS/m. The frequency of your system is 9800 Hz. Do you think electromagnetism is a good technique to use in this case? What if the upper unit was instead a till with conductivity of 5 mS/m? (Hint: think skin depth and pay attention to your units! You will want to convert to SI when you make your calculations. )

Explanation / Answer

Electro magnetic method is used for greater depth and our study area is just 50m . so we cant use

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