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IPS Radio and Space Services, currently operates three four-receiver Canadian Advanced Digital Ionosondes (CADIs), two at mid-latitudes at Canberra and Camden, and the remaining one at Casey station, Antarctica. The deployment of a fourth unit at Macquarie Island is scheduled for this summer.
Variations in the atmospheric, near-surface vertical electric field measured at the Southern … near-pole station Vostok (78.5(S, 107(E, L=75.0) in 1998, 1999 and 2000 have been analyzed … in conjunction with changes of the ionospheric electric field and interplanetary magnetic field … (IMF).
Around 145 different non-marine algae have been identified from the Windmill Islands region, Antarctica. About 24 of these occur in the snow. Nearly half of these, which includes all the dominant snow algae, complete their life cycles in the snow and do not grow elsewhere.
Simulated sea ice thickness in the ORCA2-LIM coupled sea ice–ocean model is … compared with thicknesses from the Antarctic Sea Ice Processes and Climate (ASPeCt) database. We find a qualitative agreement of the large-scale patterns of ice thickness … distribution.
The existence of Polar Mesosphere Summer Echoes (PMSE) in the Southern Hemisphere … (SH) has recently been confirmed using HF radar (Ogawa et al., 2002), MST … radar (Morris et al., 2004), and a Dynasonde (Jarvis et al., 2005) following earlier … observations using MST radar (Woodman et al., 1999).
In recent years there has been increasing interest in the role of frazil ice in ocean cavities … under ice shelves and in the adjacent ocean, where plumes of Ice Shelf Water (ISW), colder … than the sea-water surface freezing point, are observed. The development of frazil ice - suspensions of small…
The Antarctic Sea Ice Processes and Climate (ASPeCt) is a program of multi-disciplinary … Antarctic sea ice zone research which is co-sponsored by the Scientific Committee on … Antarctic Research (SCAR) and the Climate and Cryosphere (CliC) program.
Introduction: Sea ice provides a habitat for algal communities which contribute significantly to … overall primary production of the ice-covered Southern Ocean and may serve as an important … food resource for pelagic herbivores like Antarctic krill…
This paper provides the first evidence to relate Leopard Seal numbers with sea-ice … concentrations in a region of the Eastern Antarctic pack ice and to propose a biological … mechanism (krill availability) to link the two. Leopard seals have been periodic, and sometimes numerous…
Significant changes in zooplankton composition have occurred in various ocean systems in … recent years. These changes can be quite dramatic, occurring within one or two seasons, as … happened with the regime shift in the North Sea and North Atlantic in the late 1980s.
Four years of Rayleigh lidar and supporting radiosonde balloon data are used to study the … influence of wave activity on Polar Stratospheric Clouds (PSC) from an Eastern Antarctic … coastal site.
An 11 year climatology (1995-2005) of mesopause region temperatures over Davis station, Antarctica (68°S, 78°E) has been derived from hydroxyl rotational spectra measured using a … scanning spectrometer.
During early August 2005, the size of the Antarctic ozone hole, as measured by the area … enclosing the 220 Dobson Unit contour of the total ozone column, grew more rapidly than … previously observed for that time of year. Using global ozone and meteorological data…
A mechanism where reconnection between the Solar Interplanetary Magnetic Field and the … Geomagnetic field, deposits energy in the polar atmosphere was first observed in Antarctica. The propagation and attenuation of plasma waves occurs in the polar ionospheric waveguide … at 300km altitude…
We present in situ observations of atmospheric and fast-ice parameters at Davis … (68°35'S, 77°58'E), East Antarctica. Surface measurements from 1969–2003 reveal … negative trends for summer and autumn surface-air temperatures, yet positive annual, winter and spring trends.
In the mid 1920’s, Sir Alister Hardy developed a radical new method for sampling plankton continuously, rather than taking spot samples using conventional plankton nets. The CPR was first used in Antarctic waters during the 1925-27 Discovery expedition…
Antarctica is both the coldest and most arid continent on Earth, and experiences continuous light in midsummer and continuous darkness in midwinter. These factors reduce the growth rate of the continental Antarctic flora (mosses, lichens and algae) to a minimum.
A summary of stratospheric measurements above Davis, Antarctica (68.6°S, 78.0°E) for the winter and spring of 2005 is presented. A rapid warming was observed in the … lower stratosphere during the third week of August.
Von Bertalanffy (VB) growth models for … Antarctic krill have been calibrated from populationlevel … data consisting of modal lengths obtained from … a time sequence of length frequency samples. We … developed an alternative approach to predicting the … trajectory of length over time…
The AASTINO (Automated Astrophysical Site Testing INternational Observatory) is a remote … laboratory that has been operating at Dome C station on the Antarctic plateau since January 2003. It … is designed to run throughout the Antarctic winter without intervention…
[1] Temperature observations between 20 and 120 km … from the SABER instrument on the TIMED spacecraft are … used to investigate the nature of planetary wave activity … during the 60 days prior to the midwinter stratospheric … warming that commenced on 26 September…
A superposed epoch analysis of variations of the vertical electric field measured at Vostok (78.51S, 1071E; magnetic … latitude 83.61S) during 1998–2002 heliocentric current sheet (HCS)…
[1] The north-south asymmetry of the amplitude of ULF pulsations in the Pc 3–5 band is … studied using magnetic field data from the magnetically conjugate stations at L ~5.4: Kotzebue (KOT) in the northern hemisphere and Macquarie Island (MCQ) in the southern … hemisphere.
The focus of this study was the distribution of … adult female Weddell seals during winter at the Vestfold … Hills. Satellite tracking of Weddell seals had never been … done before at this location. Hence, this was a pilot … study to evaluate the following methods.