Measurement of electromagnetic effects generated by swell

Klein, Melvin P.; Louvet, Pascal; Morat, Pierre

doi:10.1016/0031-9201(75)90018-7

Cited by 6 publications

(4 citation statements)

References 1 publication

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“…They observed that the magnetic field gradient fluctuated in accordance with surface and internal waves which they recorded with pressure sensors, and current meter and thermistor chains, respectively. Klein et al (1975) attempted to measure the magnetic field of sea surface waves with a pair of search coils, one horizontally and the other vertically mounted in a non-magnetic frame. The device was deployed on the sea bottom in various shallow water areas of the Mediterranean Sea.…”

Section: Introductionmentioning

confidence: 99%

Propagation Parameters of Sea Surface Waves Inferred from Observations from Two Closely Spaced Vector Magnetometers.

Watermann

Magunia

1997

J. geomagn. geoelec

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The alternating magnetic dynamo field of sea surface waves, a consequence of their Lorentz electric field, has been observed with a pair of simultaneously operated, closely spaced tri-axial magnetometers. Measurements from a magnetometer located in the centre of a tiny, uninhabited island served to compensate measurements from a near-shore magnetometer for magnetic pulsations of ionospheric origin, leaving the water wave dynamo field, effective close to shore only, as the dominant residual magnetic field. Amplitude and frequency of waves and swell were recorded with a vertical accelerometer (wave rider buoy), floating on the sea surface. The wave rider data are in good agreement with those obtained from the magnetometers. Amplitude and phase relations between the three vector components of the magnetic oscillations yield a sea surface wave vector which is consistent with the swell propagation direction usually found in that area. The magnetic field data further demonstrate that the water mass motion close to shore was not confined to a vertical plane (as would be the case for freely propagating gravity waves in the open ocean). The motion rather took place in a plane inclined at about 40° from the horizontal, which is roughly twice the inclination of the island flanks. We conclude that the magnetometer measurements yield a reasonably accurate description of the surface wave water motion within about one wavelength from shore.

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Section: Introductionmentioning

confidence: 99%

Propagation Parameters of Sea Surface Waves Inferred from Observations from Two Closely Spaced Vector Magnetometers.

Watermann

Magunia

1997

J. geomagn. geoelec

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“…The disturbances of the magnetic field (from 0.1y to 17) were measured during the spreading of the surface waves on the water [Maclure et al, 1964;Kozlov et al, 1971;Gorskaya et al, 1972;Klein et al, 1975;Hrotevich et al, 19773. Theoretical analysis of the magnetic field disturbances is based on the Maxwell equations and on the mechanics of continua. If the magnetic forces are small in comparison with the inertial forces, then the equations of the mechanics and electrodynamics might be separated from each other.…”

Section: -H ;mentioning

confidence: 99%

Generation of low-frequency electric and magnetic fields during large- scale chemical and nuclear explosions

Адушкин

Dubinya²,

Karaseva³

et al. 1995

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“…Unfortunately, the cost of off-shore geophysical work is so great that it has only been put to limited use so far. This includes an interesting study of the electromagnetic effects of sea swell (Klein et al 1975).…”

Section: Other Regional Investigationsmentioning

confidence: 99%

The electrical conductivity of the Earth and planets

Hutton¹

1976

Rep. Prog. Phys.

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Measurement of electromagnetic effects generated by swell

Cited by 6 publications

References 1 publication

Propagation Parameters of Sea Surface Waves Inferred from Observations from Two Closely Spaced Vector Magnetometers.

Propagation Parameters of Sea Surface Waves Inferred from Observations from Two Closely Spaced Vector Magnetometers.

Generation of low-frequency electric and magnetic fields during large- scale chemical and nuclear explosions

The electrical conductivity of the Earth and planets

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