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Methods of inverting high-frequency radar land and sea backscatter to obtain … ionospheric vertical profiles offer an important means of remote sensing the ionosphere up … to thousands of kilometers from the transmitter/receiver location.
Concentrations of UV-B absorbing pigments and anthocyanins were measured in three moss species, over a summer growing season in Antarctica. Pigment concentrations were compared with a range of climatic variables to determine if there was evidence that pigments were induced by UV-B radiation…
Concentrations of UV-B absorbing pigments and anthocyanins were measured in three moss species, over a summer growing season in Antarctica. Significant seasonal differences were found in the potential UV-B screening pigments. The most exposed species, Ceratodon purpureus…
The impact of ambient ultraviolet (UV)-B radiation on the endemic bryophyte, Grimmia … antarctici, was studied over 14 months in East Antarctica. Over recent decades, Antarctic … plants have been exposed to the largest relative increase in UV-B exposure as a result of … ozone depletion.
Concentrations of UVB (ultraviolet B) absorbing pigments and anthocyanins were … measured in three moss species, over a summer growing season in Antarctica.
: The KErguelen : Ocean and Plateau compared Study (KEOPS) examined the origin of elevated phytoplankton biomass over the Kerguelen plateau in the Southern Ocean in mid-summer (Jan. - Feb. 2005).
The application of renewable power systems is particularly relevant to remote locations such as Antarctica, where traditional fossil fuel based systems incur relatively high costs of fuel transportation in conjunction with an increased risk of environmental damage.
A common technique for comparing the in situ microbial potential for mineralisation of petroleum hydrocarbons in different environments or under different remediation strategies, is by use of radiolabelled tracer studies.
From its original formulation in 1990 the International Trans-Antarctic Scientific Expedition … (ITASE) has had as its primary aim the collection and interpretation of a continent-wide array of … environmental parameters assembled through the coordinated efforts of scientists from several nations.
Chlorophyll-a (Chl-a) concentrations in surface waters were measured at 137 hydrographic stations occupied by four … research vessels participating in the CCAMLR 2000 Survey and the values were compared to estimates from data … acquired by the SeaWiFS satellite.
ABSTRACT. We present highly resolved, annually dated, calibrated proxies for atmospheric circulation … from several Antarctic ice cores (ITASE (International Trans-Antarctic Scientific Expedition), Siple … Dome, Law Dome)…
Over recent decades, Antarctic plants have been exposed to the … largest relative increase in UV-B exposure as a result of ozone … depletion. Open-sided plexiglass screens were used to reduce UV … levels by 77% over turves of the endemic Antarctic bryophyte, Grimmia antarctici…
Abstract … Little effort has been devoted to differentiating between hydrocarbon losses through evaporation and biodegradation … in treatability studies of fuel-contaminated Antarctic soils. When natural attenuation is being considered as a treatment … option…
Astronomers have always sought the very best locations for their telescopes. From … observatories in city centres, astronomers moved first to nearby mountain tops, then to … remote sites in distant countries, to aircraft, and into space.
Traditionally many marine mammal populations are estimated by visual surveys of the number of ‘available’ animals (eg pack-ice seals hauled out on ice floes) with correction for the number not available (those in the water). However…
The dissolved Barium (Bad) distribution in the whole … water column was examined along theWOCE SR3 line in the … Southern Ocean (Australian sector, late winter-spring 2001).
ABSTRACT. The best ground-based astronomical sites in terms of telescope sensitivity at infrared and … submillimeter wavelengths are located on the Antarctic Plateau…
We describe a preliminary analysis of small-scale temperature perturbations in the stratosphere produced by long wavelength gravity waves, as measured globally during the CRISTA-SPAS missions. We focus on enhanced activity observed at the equator and near the southern tip of South America.
The high altitude Dome C site offers excellent prospects for cosmic ray observations at low to moderate energies. A neutron monitor, based on the standard NM64 counter or on the new Helium counter technology could be an important addition to the worldwide monitor network.
The Antarctic continent covers an area of nearly 14 million square kilometres, representing one-sixteenth of the Earths land surface. Ninety-eight percent of this area is covered by ice. The remaining 2% comprises widely scattered patches of rock and mineral terrain surrounded by snowfields…