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Variation in the structure of Antarctic marine benthic macrofaunal communities is being investigated using an artificial substrate which mimics a kelp holdfast environment.
To determine the foraging space of Emperor penguins Aptenodytes forsteri in winter 12 females from Auster colony (13 400 pairs) were equipped with satellite transmitters and time-depth recorders before departing on their 77 ± 8 d winter (June-August) foraging trip.
Weddell seals (Leptonychotes weddelli) are the most southerly breeding of all mammals and breed on the fast-ice around the shores of the Antarctic continent. Weddell seals display a polygynous mating system, with operational sex ratios (OSR) ranging from 3:1 to 8:1.
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Beaufort Island, Ross Sea, Antarctica, is a Specially Protected Area originally designated on account of, and still supporting, a small winter sea ice breeding colony of Emperor penguins, a large summer breeding colony of Adélie penguins, and several colonies of Skuas. A substantial area of moss…
In this paper we examine the geomagnetic signatures of solar wind impulses using magnetometer array data, a bistatic HF radar, and a co-located imaging riometer. The impulses were associated with 1.6mHz magnetic pulsations that were observed across a wide range of latitudes.
HF signals that propagate via the ionosphere may exhibit Doppler shifts due to a number of processes that give rise to a time dependent refractive index. This paper examines the role of ULF (1–100mHz) wave energy, incident from the magnetosphere, in causing Doppler shifts in HF signals.
A comprehensive, airborne survey of the Vanderford and Adams glaciers was started in January 1983, continued through the austral summer season 1984/5, and completed in February 1985. Ice thickness and surface-elevation data were collected over some 4500 square kilometres…
Around the Antarctic continent, polynyas form within the sea ice due to wind-forcing or upwelling of warm ocean water. Acting as ventillators in the ice cover, polynyas accelerate the exchange of energy, gas and aerosol at the ocean/atmosphere boundary…
This work investigates interactions and mappings of the boundary layers, polar cusp and outer magnetosphere with the high latitude ionosphere. Primary diagnostic tools are plasma waves observed on the ground as geomagnetic pulsations.