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Unmodelled sub-daily periodic signals can propagate … into time series of daily geodetic coordinates and tropospheric … estimates at various different frequencies. Geophysical … interpretations of geodetic products, particularly at seasonal … timescales…
Although guidelines exist for approaches to Weddell seals (Leptonychotes weddellii) in … Antarctica, there has been no scientific assessment of the effectiveness of these guidelines in … minimising disturbance to the seals.
Micro-organisms are an important part of the Antarctic ecosystem contributing to the biogeochemical cycling of nutrients.
Anthropogenic noise generated through travel in the Antarctic has the potential to affect the region’s … wildlife. Weddell seals (Leptonychotes weddellii) in particular can be exposed to anthropogenic noise because they … live under, and breed on, the fast ice on which humans travel.
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).
The Adare Trough, located 100 km NE of Cape Adare, Antarctica, is the extinct third arm of a Tertiary spreading ridge that … separated East from West Antarctica. We use seismic reflection data, tied to DSDP Site 274…
The efficient sound carrying properties of the ocean and the vocal nature of many marine … mammals provide an excellent means to monitor these often difficult to study animals.
Abstract: Antarctic krill (Euphausia superba) are found throughout much of their life in schools. In the laboratory however…
An accurate quantitative description of the relationship between the stresses in ice masses … and the resulting deformation strain rates is a critical ingredient in successfully modelling their … flow.
A video system with dual camera capability (sideward, and downward looking) was … deployed within and below the Amery Ice Shelf, East Antarctica. Although the system had no … real time image transmission capability, video imagery was obtained at two hot water drilled … borehole sites AM03 (70° 33.
The ‘Norfolk Meeting’ was held in November 2005 as a joint IWC SO GLOBEC initiative to … outline a program of work to expedite integrative circumpolar analyses of existing cetacean … data series for the Antarctic. Our aim was to use the results of these analyses to summarise, on a circumpolar scale…
The ‘Norfolk Meeting’ was held in November 2005 as a joint IWC SO GLOBEC initiative to … outline a program of work to expedite integrative circumpolar analyses of existing cetacean … data series for the Antarctic. Our aim was to use the results of these analyses to summarise, on a circumpolar scale…
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…
Recent research indicates extensive basal melting near the deep grounding lines of major … Antarctic outlet glaciers. Further…
Using satellite altimeter measurements of Antarctic surface elevation changes Davis and … others (Science, 2005) reported that the interior of the East Antarctic ice sheet is thickening … slightly, contributing 0.12 mm/a towards lowering global sea-level.
Methanesulphonic acid (MSA) measured along ice cores was largely used as a marker of … past marine biogenic activity because of it is formed by atmospheric oxidation of … dimethylsulphyde (DMS), emitted by metabolic processes of marine biota.
Oceanographic and seismic observations of the ocean beneath the Amery Ice Shelf, taken … over several seasons, describe a general pattern consistant with an “ice pump” mechanism. The ice pump is a general description of the thermohaline circulation under ice shelves.