7585 to 7596 of 13961 results
During the period from October 1991 to May 1992 the royal research ship Bransfield made its annual voyage from the United Kingdom to Antarctica and back. Whenever the measurement swath […]
A zooplankton net sampling survey was conducted in the southwest Atlantic between 34* and 55* S during austral spring 1990. The survey grid covered shelf, slope and oceanic regions and […]
1 Theory suggests that any given rise in temperature resulting from climate change will have its greatest effect on high Arctic ecosystems where growing seasons are short and temperatures low. […]
After thirty years of plate-tectonic theory, the reasons why supercontinents disintegrate and disperse to form smaller continental plates remain enigmatic. Possible causes range from abnormally hot mantle upwellings, or plumes, […]
Twenty-one species of oribatid mites (Acari: Oribatida), including three new species, are reported from samples collected on the sub-Antarctic island of South Georgia. Fossonothrus wallworki n.sp., Lanceoppia elegantula n.sp. and […]
A total of 12 species of oribatid mites (Acari: Oribatida) are reported from Beauchêne Island, including two new species. Furcobates lewissmithi n. sp. and Oribatella blocki n. sp. are described […]
Three long-term studies of lichen growth and colonization have been undertaken at Signy Island, South Orkney Islands, in the maritime Antarctic. Small individual thalli of several crustose species and uncolonized […]
VELOX (VLF/ELF Logger Experiment), a new facility for systematically studying the characteristics of magnetospherically generated ELF/VLF radio noise received at a high-latitude ground station (Halley, Antarctica, 76°S, 26°W, L = […]
Primitive lava and hyaloclastite with unusual, highly refractory compositions, form part of the Early Ordovician Balcreuchan Group within the ophiolitic Ballantrae Complex, southwestern Scotland. They are identified as likely high-Ca […]
Livingston Island contains several, distinctive sedimentary and volcanic sequences, which document the history and evolution of an important part of the South Shetland Islands magmatic arc. The turbiditic, late Palaeozoic–early […]
K-Ar whole-rock dating of five samples of quartz-mica schist from the Nordenskjöld Coast, eastern Graham Land, provides the first unequivocal evidence of pre-Triassic (> 249 ± 7 Ma) deposition of […]