Corpus ID: 235390566

Frequency Dependence and Zero Crossover Effects in SQUID Based TDEM Measurements: Peculiarities or Facts?

  title={Frequency Dependence and Zero Crossover Effects in SQUID Based TDEM Measurements: Peculiarities or Facts?},
  author={R. Nagendran and Lata K. Bisht and Ijee Mohanty and A. Arasu and S. Albert},
In this paper we analyzed the two peculiarities frequently observed in SQUID magnetometer applications in TDEM based geophysical exploration such as the decay of the ground response is frequency dependent and sign reversal or zero-crossover effect at late decay times. A SQUID based TDEM system has been developed, characterized with prototype transmitter and field survey has been performed. Since the laboratory tests were done in a relatively noisy environment, the frequency dependence and the… Expand


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