Underground electromagnetic exploration method

In an underground electromagnetic exploration method using a transmission source (2) for generating induced current in order to periodically generate an induced current, magnetic observation comprises an observation step for observing a magnetic field based on smoke rings by using a magnetic field s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NAGASAKI, YASUHIKO, SAITO, AKIRA, MATSUOKA, TOSHIFUMI, OKUZUMI, KOICHI
Format: Patent
Sprache:eng
Schlagworte:
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