Publications

7897 to 7908 of 14011 results

1. Aspects of wave-particle interactions at mid-latitudes

   Arguably the most significant source of particle precipitation into the ionosphere at mid-latitudes (L ∼2–3), at least for electrons in the tens to hundreds of keV energy range, is that […]

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2. Very low- and low-grade metamorphism in the Trinity Peninsula Group (Permo-Triassic) of northern Graham Land, Antarctic Peninsula

   The Permo-Triassic Trinity Peninsula Group is a widespread, regionally metamorphosed metasedimentary sequence in northern Graham Land, Antarctica, which forms the local ‘basement’ to the mainly Jurassic–Cretaceous Antarctic Peninsula magmatic arc. […]

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3. Age and correlation of volcanism in central Livingston Island, South Shetland Islands: K-Ar and geochemical constraints

   Volcanic sequences in central Livingston Island can be divided into two broad groups. The older group consists of basalt-dacite lavas, clastic rocks and associated hypabyssal intrusions. The lavas are lithologically […]

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4. A comparison of EISCAT and Dynasonde measurements of the auroral ionosphere

   Incoherent-scatter radar and ionospheric sounding are powerful and complementary techniques in the study of the Earth’s ionosphere. The work presented here involves the use of the Tromsø Dynasonde as a […]

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5. Antarctic Peninsula granitoid petrogenesis: a case study from Mount Charity, north-eastern Palmer Land

   At Mount Charity, north-eastern Palmer Land, Rb–Sr whole-rock dating has identified three successive phases of granitoid emplacement in Triassic (232 ± 4 Ma), Jurassic (168 ± 1 Ma), and Cretaceous […]

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6. An assessment of the role of the marginal ice zone in the carbon cycle of the Southern Ocean

   The dense phytoplankton blooms observed in earlier studies in the Southern Ocean Marginal Ice Zone (MIZ) may not be representative of all regions, so that some previous assessments of the […]

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7. Interpolation errors in UV–visible spectroscopy for stratospheric sensing: implications for sensitivity, spectral resolution, and spectral range

   UV–visible measurements of stratospheric constituents require the ratio of a pair of spectra to be determined. If their wavelength calibrations differ and if an array detector is used, at least […]

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8. Cephalopods and mesoscale oceanography at the Antarctic Polar Front:satellite tracked predators locate pelagic trophic interactions

   Predator data and exploratory fishing in the Scotia Sea have revealed the presence of cephalopod stocks in the Antarctic Polar Frontal Zone (PFZ). This is a vast, remote region where […]

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9. Role as Consumers

   Cephalopods are voracious, versatile predators. They generally have a short life span and a single spawning event followed by death. Populations are subject to dramatic fluctuations and their impact on […]

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10. Diurnal and seasonal occurrence of polar patches

    Analysis of the diurnal and seasonal variation of polar patches, as identified in two years of HF-radar data from Halley, Antarctica during a period near sunspot maximum, shows that there […]

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11. Cryo-preparation of small or lightly attached biological specimens

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12. Experimental fracture and mechanical properties of Antarctic ice: preliminary results

    An experimental study of the fracture mechanics and rheology of ice from the Ronne Ice Shelf, Antarctica, is currently being undertaken. The apparent critical stress-intensity factor (or apparent fracture toughness, […]

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