4861 to 4872 of 13980 results
1.Incidental mortality (bycatch) in fisheries remains the greatest threat to many large marine vertebrates and is a major barrier to fisheries sustainability. Robust assessments of bycatch risk are crucial for […]
Ninety nine per cent of all the fresh water on the surface of the Earth is in the form of ice. Observations from space have revealed more about the ice […]
Whole‐rock and mineral analyses of polydeformed mica‐schist, quartzite, marble and amphibolite are presented from Signy Island, South Orkney Islands, part of the Scotia metamorphic complex. Whole‐rock chemistry suggests that the […]
A subduction-accretion model incorporating new geophysical data is presented to explain the geology of the Antarctic Peninsula from late Palaeozoic to Cenozoic time. According to the model, the peninsula consists […]
The installation of a Fabry–Perot interferometer at Halley (75.5° S, 26.8° W; L = 4.2), Antarctica, has now allowed the first comparison to be made between Southern Hemisphere ground-based thermospheric […]
The 35 × 20 km Cerro Galán resurgent caldera is the largest post-Miocene caldera so far identified in the Andes. The Cerro Galán complex developed on a late pre-Cambrian to […]
Beauchêne Island is the most isolated of the Falkland Islands archipelago and until the authors’ visit there in 1980 little was known or published about the island and its biota […]