3781 to 3792 of 14084 results
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An Upper Mesozoic island-arc–back-arc system in the southern Andes and South Georgia
Read more of: An Upper Mesozoic island-arc–back-arc system in the southern Andes and South GeorgiaThe Upper Jurassic–Lower Cretaceous strato-tectonic belts of the southern Andes and South Georgia, 2000 km apart, can be correlated and explained as the products of an island-arc–back-arc system. From the […]
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The simultaneous occurrence of spread-F at magnetically conjugate points
Read more of: The simultaneous occurrence of spread-F at magnetically conjugate pointsThe correlation in occurrence of spread-F observed at two magnetically conjugate mid-latitude observatories is shown to be very significant, whereas for non-conjugate stations similar correlations are negligible.
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Solar proton and electron precipitation effects detected by ionosondes
Read more of: Solar proton and electron precipitation effects detected by ionosondesAnomalous polar absorption events detected by means of ionosondes at four stations in the northern hemisphere and four in the southern hemisphere have been compared with energetic particle events observed […]
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Comparative CO2 exchange patterns in mosses from two tundra habitats at Barrow, Alaska
Read more of: Comparative CO2 exchange patterns in mosses from two tundra habitats at Barrow, AlaskaThe effects of variation in light intensity, temperature, and water content on rates of net photosynthesis and dark respiration have been investigated in two common tundra mosses, Polytrichum alpinum from […]
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Ridges on Antarctic ice rises
Read more of: Ridges on Antarctic ice risesSatellite pictures have revealed the presence of ridges on the summits of ice rises in Antarctica. Because ice does not exhibit a critical stress it is conclugerd that these ridges […]