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Ice velocity, surface elevation, and ice thickness were measured along oversnow traverse routes in the sector of Wilkes Land, East Antarctica, bounded by long. 93°E and 131°E, and the coast and lat. 75°S.
Surveys of ice thickness, surface elevation, velocity, and accumulation rate were made on the upper part of Totten Glacier by oversnow traverse during 1987.
There is a distinct directional anisotropy in microwave backscatter from the surface of the East Antarctic ice sheet as measured by the C-band wind scatterometer carried by the ERS-1 satellite.
Glaciology surveys of the ice sheet in Wilkes Land, Antarctica, have been made on oversnow traverses operating out of Casey. Data collected includes surface elevation, accumulation rate, snow temperature and physical characteristics of the snow cover.
Landsat imagery of the Antarctic ice sheet and glaciers exhibit features that move with the ice and others that are fixed in space. Two images covering the same area but acquired at different times are compared to obtain the diplacement of features. Where the time lapse is large…
The ERS-1 wind scatterometer is an active microwave instrument operating at 5.3 GHz in the C-band with VV-polarisation. Measurements of the microwave backscatter coefficient of the surface are made at regularly spaced points within a 500 km wide swath along each orbit.
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…
Remote sensing techniques can be used to investigate the dynamics and surface characteristics of the Antarctic ice sheet and its outlet glaciers. This paper describes a methodology developed to map glacial movement velocities from LANDSAT MSS data…
Heard Island is a volcanic island, which is 80% ice-covered, situated in the southern Indian Ocean. Measurement of the variation in the mass and length of Heard Islands glaciers over time provides valuable data related to climatic change in a region mostly devoid of such information.
Deuterium excess (d = dD - 8 * d18O) values in surface snow are presented for central and east Antarctica. The samples are primarily from Soviet, French, and Australian traverses. The d values exhibit a large change going from coastal sites to high-altitude sites on the ice sheet.
Break-up of ice shelves has been regarded as an indicator of climate change1. Observations around the Antarctic Peninsula have shown a pattern of gradual retreat, associated with a regional atmospheric warming and increased summer melt and fracturing processes2-9.