Special Issue: Electromagnetic Induction in the Earth
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Measurements of motionally induced voltage in the coastal zone of the Throat of the White Sea
Earth, Planets and Space volume 54, pages 433–441 (2002)
Abstract
The theoretical relationship between non-local motionally induced voltages (MIV) and tidal currents is validated with observations of natural low-frequency electric field at the coast of the Throat of the White Sea (northwestern Russia). The Throat of the White Sea is a strait of 50-km width and about 500-km length with depths varying from 20 to 50 m connecting semi-closed White Sea basin with the Barents Sea. Strong tidal currents providing a reference signal for calibrating coastal measurements of non-local MIV characterize the Throat. The measurements were carried out simultaneously by means of two horizontal receiving on-land and land-sea antennas. Tidally driven MIV dominates in all time series obtained in the coastal zone of the Throat of the White Sea. Monitoring of non-local MIV within the coastal zone could be used for studies of wind tides, residual tidal circulation and temporal variability of a quasi-stationary current. MIV measurements offer an important advantage over traditional oceanographic methods (currents meters, etc.), because it works also in winter period (about 6 months) when the White Sea is covered by ice. The main disadvantage of this technique is a necessity to calibrate non-local MIV with some other oceanographic direct or remote measurements.
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Prof. Leonid L. Vanyan passed away suddenly on 31 October 2001.
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Palshin, N.A., Vanyan, L.L., Poray-Koshits, A.M. et al. Measurements of motionally induced voltage in the coastal zone of the Throat of the White Sea. Earth Planet Sp 54, 433–441 (2002). https://doi.org/10.1186/BF03353034
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DOI: https://doi.org/10.1186/BF03353034