Skip to content

Advertisement

Open Access

Measurements of motionally induced voltage in the coastal zone of the Throat of the White Sea

  • N. A. Palshin1Email author,
  • L. L. Vanyan1,
  • A. M. Poray-Koshits1,
  • V. A. Matyushenko2,
  • P. Kaikkonen3 and
  • J. Tiikkainen3
Earth, Planets and Space201454:BF03353034

https://doi.org/10.1186/BF03353034

Received: 11 December 2000

Accepted: 4 December 2001

Published: 25 June 2014

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.

Keywords

Coastal ZoneTidal CurrentWater VelocityTidal ConstituentSubmarine Cable

Notes