Publication Date:
1979-01-01
Description:
The results of geomagnetic measurements at field stations on Vancouver Island, British Columbia, and the nearby mainland are found to be in close agreement with measurements for a laboratory analogue model which employs a horizontal inducing field over a simple model including only the conducting ocean and a uniform earth. A transfer function and hypothetical event analysis of the field station measurements is used to compare field station and an alogue model vertical magnetic fields. The field station results show that for frequencies greater than ∽0.0006 Hz (30 min period) the fields are strongly affected by channelling of telluric current in the seawater channel between the island and the continent. As well, this study demonstrates that, for a coastal region, model studies can aid in selecting magnetotelluric stations minimally affected by the coast, and thus optimum for studying the tectonics of the region. © 1979, Society of Geomagnetism and Earth, Planetary and Space Sciences. All rights reserved.
Print ISSN:
0022-1392
Topics:
Geosciences
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