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Report No.

Development of EM-ACROSS and observed transfer function using this system

Nakajima, Takahiro; Kunitomo, Takahiro; Nagao, Hiromichi; Kumazawa, Mineo; Shigeta, Naotaka

We have developed and tested a new electromagnetic sounding method, which is called EM-ACROSS (ElectroMagnetic - Accurately Controlled Routinely Operated Signal System). We carried out a field test using this system at Tono area, and acquired very accurate transfer function between the source and receiver. The estimated value of the ground conductivity is consistent with the previously reported values. From the phase of the transfer function for a month, we can see the correlation with the rainfall.



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