A laboratory analogue model study of ocean-wave induced magnetic fields for cases of non-uniform depths and sea-land interfaces

Details A laboratory analogue model study of ocean-wave induced magnetic fields for cases of non-uniform depths and sea-land interfaces A laboratory analogue model study of ocean-wave induced magnetic fields for cases of non-uniform depths and sea-land interfaces

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pepi...19...12m&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 19, Issue 1, p. 12-20.

Physics

1

Scientific paper

The laboratory analogue model described by Miles et al. (1977) for the case of a uniform depth ocean is extended to study ocean-wave induced magnetic fields for cases of non-uniform ocean depths and sea-land interfaces. The models studied are: (i) the step and shelf model, (ii) the wedge and shelf model, (iii) the dyke model, (iv) the sea mount model, (v) the sloping bay and shelf model, and (vi) the reef and shelf model. For shallow depths, the behaviour of the induced magnetic field is strongly dependent on the fluid depth over the structure. The shape of the leading edge of the submerged structure, and the contour of the coastline also significantly affect the induced horizontal magnetic field, and possible mechanisms for these effects include wave interference and current channelling. On the basis of the model results, it is apparent that an irregular ocean bottom, or a large submerged structure, should affect the induced magnetic field at the surface only for rather shallow ocean depths of less than 40 m for a fluid wavelength of 360 m.

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