5689 to 5700 of 14035 results
The distribution and ultrastructure of muscle-fibre types has been investigated in adult and juvenile specimens of the pelagic high-antarctic silverfish Pleuragramma antarcticum Boulenger, 1902 collected from the South Shetland Islands […]
Pc3–4 magnetic pulsations have been observed at Halley, Antarctica (L = 4.2), simultaneously with oscillations in the phase of F-region echoes received using a digital ionosonde. One event, lasting more […]
The first results from the program HOTRAY for ray tracing electrostatic and electromagnetic waves in a hot plasma are presented. The calculations are applied to the linear mode‐conversion window theory […]
Marine geophysical studies of the South Orkney microcontinent show two intersecting tectonic fabrics of different age. The older fabric is oriented E-W, and represents the magmatic arc and fore-arc created […]
Following the cessation of subduction along the Antarctic Peninsula, there was a change in the character of the magmatism from calc-alkaline to alkaline. A Miocene-Pliocene suite of basanites, tephrites and […]
The Southern Coastal Batholith of central Chile is mainly composed of calc-alkaline granitoids of Late Carboniferous to Permian age. There is no clear evidence of the existence of older plutonic […]
The filamentous chlorophyte Spirogyra forms a mat covering extensive areas of Spirogyra Lake, a small, shallow, Antarctic lake. It has an annual growth pattern, with a maximum standing crop of […]
Place names in the Hughes Bay area, Danco Coast, Antarctica well illustrate naming problems that give rise to confusion or ambiguity. This note shows the origins of conflicting place names, […]