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This paper places the sub-Antarctic region in its international context by contrasting the sub-Antarctic’s geographical qualities with the region’s international legal and political characteristics.
[1] The relationship between the production of dimethylsulfide (DMS) in the upper … ocean and atmospheric sulfate aerosols has been confirmed through local shipboard … measurements, and global modeling studies alike.
Publicly available bathymetry and geophysical data can be used to map geomorphic features of the … Antarctic continental margin and adjoining ocean basins at scales of 1:1-5 million.
The size-differentiated sex ratio (proportion of males, PM) of Antarctic krill Euphausia … superba was examined with an extensive dataset derived from scientific surveys in the Indian Ocean … sector and the southwest Atlantic sector, and from the krill fishery in the Southern Ocean.
Chlorophyll fluorescence was used to measure changes in the maximum fluorescence yield (F0m) and effective quantum yield (F/F0m ) of Antarctic macroalgae in response to dissolved copper.
The Super Dual Auroral Radar Network (SuperDARN) is an international network of oblique HF over-the-horizon … radars dedicated to the study of high latitude magnetosphere-ionosphere convection. In scientific terms, they have been … an outstanding success…
Although long-range atmospheric transport has been described as the predominant mechanism … for exposing polar regions to persistent organic pollutants (POPs), recent studies have suggested … that bird activity can also contribute substantially to contaminant levels in some environments. However…
Sea-ice drift and deformation in the Western Weddell Sea during austra; summer of 2004 are characterised using in situ data from a meso-scale array of 24 drifting ice buoys. About 30 days of data during late November and December 2004 are available from the buoy array.
Airborne, ship-borne and surface low-frequency electromagnetic (EM) methods have … become widely applied to measure sea-ice thickness. EM responses measured over sea ice depend … mainly on the sea-water conductivity and on the height of the sensor above the sea-ice–sea-water … interface…
Remains of tardigrades have rarely been … reported to preserve in sediments, resulting in the … absence of important ecological and biogeographic … information that they could provide. However…
Antarctic coastal polynyas are major areas of intense ocean–atmosphere heat and moisture … flux, and associated high sea-ice production and dense-water formation. Their accurate detection, including an estimate of thin ice thickness, is therefore very important. In this paper…
On 20 January 2005 the sun produced the highest intensity of relativistic … solar particles observed at Earth in 50 years. The sea-level increase at Terre Adelie … (~46 X in 1 minute data) was slightly less than in 1956 (Leeds ~47 X in 15 minute … data).
Blue-dyed bait is a seabird bycatch mitigation technique which is assumed to reduce the … contrast between the bait and the ocean background making baits visually cryptic to seabirds. We tested this assumption in two ways. First, using measured spectral profiles of blue-dyed … baits (fish and squid)…
Although satellite passive-microwave remote sensing is the main source of global sea-ice … information, the data products have never been adequately validated for East Antarctic … conditions.
Sea-ice brine algal communities were exposed … to salinities between 30 and 10& during melting. There … was a progressive decline in maximum quantum yield, relative electron transfer rate (rETRmax) and photosynthetic … efficiency (a) with decreasing salinity of the final … melted sample.
FPGA is a potential medium for DSP implementation of direct conversion transmitters and receivers. However analog interface cannot be ruled out since amplification and other tasks are still in the analog domain. In a previous work…
Quantization is a representation of data samples with a certain number of bits per sample after rounding to a suitable … level of precision. Quantization errors in a Digital Signal Processing (DSP) system can be introduced from three … sources; one source is input quantization…
This overview describes an international scientific cooperation between Brazil, USA and Japan, for an … integrated research program developed in south of Brazil for observations of solar-terrestrial interactions … and geospace.
Akasofu’s solar wind " parameter describes the … coupling of solar wind energy to the magnetosphere and … ionosphere. Analysis of fluctuations in " using model independent … scaling techniques including the peaks of probability … density functions (PDFs)…
Pelagic longline and trawl fisheries are known to kill large numbers of albatrosses worldwide. However, the impact on individual species and populations has rarely been assessed, often … because many albatross species are difficult to identify. Shy albatrosses (Thalassarche … cauta)…
There are a range of chemical contaminants of concern in Antarctic marine environments as a … result of the activities of humans, including past waste disposal practices and accidental fuel … spills. Environmental guidelines for contaminants, including targets for contaminated site … remediation…
Super Dual Auroral Radar Network (SuperDARN) HF backscatter radaras scan 16 beam directions over a field of view of ~52°. In the common mode of operation, data is collected using 45-km range gates and 7-s integrations on each beam.
ABSTRACT. The Committee for Environmental Protection (CEP) was established under the Protocol on … Environmental Protection to the Antarctic Treaty to advise the Antarctic Treaty Consultative Meeting (ATCM) on … matters relating to protection of the Antarctic environment.
The 2002 revision of the UV index (UVI) issued by the World … Health Organisation (WHO), the World Meteorological Office … (WMO), the United Nations Environment Programme … (UNEP) and the International Commission on Non-Ionizing … Radiation Protection (ICNIRP) (World Health Organization … [2002]…
Abstract. Changes in stratospheric ozone have a direct impact on the solar ultraviolet radiation (UVR) levels reaching the earth’s surface. A decrease in ozone leads to an increase in the biologically effective UVB radiation (280-315 nm) with potentially serious consequences for humans [Diffey…