3853 to 3864 of 13949 results
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Antarctic fisheries
Read more of: Antarctic fisheriesDuring recent years there has been a steady increase in the total world fish catch (including shellfish) to a plateau, reached in the early 1970’s, of around 70 million tonnes. […]
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An improved model of the variation of electron concentration with height in the ionosphere
Read more of: An improved model of the variation of electron concentration with height in the ionosphereAn empirical model of the variation of electron concentration with height is described which overcomes some limitations found in practice with a previous widely used model (Bradley and Dudeney, 1973). […]
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Climatic change and geomagnetic field reversals: A statistical correlation
Read more of: Climatic change and geomagnetic field reversals: A statistical correlationDates of climatic episodes recorded in deep-sea cores are compared with the dates of palaeomagnetic polarity transitions during the Upper Pliocene period. The chance that the number of observed coincident […]
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Dissipation of tidal energy by Antarctic ice shelves
Read more of: Dissipation of tidal energy by Antarctic ice shelvesFLEXING of ice shelves may dissipate enough tidal energy to have a significant effect on the Moon’s retreat from the Earth. It is generally agreed that tidal friction slows the […]
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Theoretical models for interpreting the dielectric behaviour of HF-doped ice
Read more of: Theoretical models for interpreting the dielectric behaviour of HF-doped iceTo understand the recent dielectric measurements made on HF-doped ice single crystals requires a full knowledge of the concentration of electrical defects present in ice and their subsequent interactions. Previous […]
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The effect of induced currents in the sea on magnetic bays observed at a coastal observatory
Read more of: The effect of induced currents in the sea on magnetic bays observed at a coastal observatoryIt is widely accepted that return currents from the auroral electrojet are responsible for the magnetic bays in the D component. The different directions of the return currents, at either […]
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Man’s impact on seals
Read more of: Man’s impact on sealsThe major direct effects of man on seal populations are caused by hunting. Subsistence hunting using traditional methods has a long history and generally resulted in a balance between the […]
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