VLF, magnetic and Pi2 substorm signatures
We carried out a superposed epoch analysis, using a database of substorm chorus events observed at Halley, Antarctica, within an hour of magnetic midnight, to define a set of 123 […]
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Read more of: VLF, magnetic and Pi2 substorm signatures
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Erosional history of the Transantarctic Mountains deduced from sand grain detrital modes in CRP-2/2A, Victoria Land Basin, Antarctica
Read more of: Erosional history of the Transantarctic Mountains deduced from sand grain detrital modes in CRP-2/2A, Victoria Land Basin, AntarcticaDynamic provenance variations are deduced from sand-grain detrital modes in samples obtained from the CRP-2/2A drillcore. Below an important unconformity at 307 metres below sea floor (mbsf), sand grains in […]
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Induced in vitro phagocytosis of the Antarctic starfish Odontaster validus (Koehler 1906) at 0°C
Read more of: Induced in vitro phagocytosis of the Antarctic starfish Odontaster validus (Koehler 1906) at 0°CPhagocytosis was studied in vitro using coelomic fluid of the Antarctic starfish Odontaster validus at 0°C. The number of coelomocytes present was determined and the phagocytic activity of the phagocytic […]
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Performance of rip-rap shore protection (1992-1998) Rothera Station, Antarctica
Read more of: Performance of rip-rap shore protection (1992-1998) Rothera Station, AntarcticaThe British Antarctic Survey (BAS) maintains a research and support station on Rothera Point (67 degrees 34’S, 68 degrees 08’W), located on the southeastern side of Adelaide Island, about 15 […]
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Improved air-mass factors for ground-based total NO2 measurements: a sensitivity study
Read more of: Improved air-mass factors for ground-based total NO2 measurements: a sensitivity studyWe present an overview of exisiting problems in air-mass factor calculations for NO2 vertical column measurements by UV-visible ground-based spectrometry, Sensitivity studies made using different radiative transfer models allow us […]
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Temperature adaptations of terrestrial arthropods of the Yenisey Region of Siberia (Asian Ecological Transect)
Read more of: Temperature adaptations of terrestrial arthropods of the Yenisey Region of Siberia (Asian Ecological Transect)Field studies and sampling of terrestrial invertebrates for ecophysiological experiments were undertaken in the summer of 1994 and 1995 in different geographic regions of the Asian Transect (Krasnoyarsk to Karaul) […]
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Factors controlling nitrate in ice cores: Evidence from the Dome C deep ice core
Read more of: Factors controlling nitrate in ice cores: Evidence from the Dome C deep ice coreIn order to estimate past changes in atmospheric NOx concentration, nitrate, an oxidation product of NOx, has often been measured in polar ice cores. In the frame of the European […]
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The effect of snow accumulation on imaging riometer performance
Read more of: The effect of snow accumulation on imaging riometer performanceIn January 1998 an imaging riometer system was deployed at Halley, Antarctica (76°S, 27°W), involving the construction of an array of 64 crossed-dipole antennas and a ground plane. Weather conditions […]
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Temporal properties of magnetospheric line radiation
Read more of: Temporal properties of magnetospheric line radiationMagnetospheric line radiation (MLR) events are relatively narrowband VLF signals that sometimes drift in frequency and have been observed in both ground-based and satellite data sets. We present the results […]
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Is magnetospheric line radiation man-made?
Read more of: Is magnetospheric line radiation man-made?Magnetospheric line radiation (MLR) events are relatively narrowband VLF signals (∼30 Hz) that sometimes drift in frequency and that have been observed in both ground-based and satellite data sets. We […]
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Some comments on transient and steady-state reconnection at the dayside magnetopause
Read more of: Some comments on transient and steady-state reconnection at the dayside magnetopauseReconnection at the dayside magnetopause is the principal method by which energy is transferred from the solar wind into the magnetosphere-ionosphere system. There is still considerable uncertainty as to whether […]