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The problem of firn-ice patches in the Polish Tatras as an indicator of climatic fluctuations
Climate fluctuation ; Climatic change ; Firn ; Frost ; Glacier ; Mountain ; Palaeoclimatology ; Poland ; Snow ; Tatra Mountains
This paper attempts to determine the relationships between multi-annual variability of air temperature, precipitation and wind velocity, and changes in the front limits of the perennial firn-ice forms (glacierets) developing under different
topographic conditions. Problems with the palaeoclimatic interpretation of their internal structure are also discussed. The results attest to the fact that fluctuations in firn-ice patches in the Tatras are probably most connected with the weather regimes

A light portable stream-driven ice drill suitable for drilling holes in ice and firn
in firn areas. Its distinguishing features are its leight weight, and the variety of tasks to which it can be adjusted. Furthermore, it is easy to operate even by one person.

is investigated in the field and samples are subjected to particle-size analysis. It is concluded that constituent debris is derived largely from exposed faces of rock between the upper and lower firn basins, but that a subglacial component is present. Entry
of the debris into the glacier is possibly by way of crevasses on the lower firn basin.

Firn ; Glacial deposit ; Glaciology ; Greenland ; Isotope ; Oxygen ; Radioactivity ; Temperature

Identification of annual layers in a firn/ice core provides a possibility to reconstruct the mass-balance sequence for glaciers where no direct observations have been carried out. A number of cores is obtained from the boreholes drilled
on the Djantugan firn plateau in the crest zone of the Main Caucasus Ridge. Annual layers are identified by visual and textural petrographic analysis in situ. Geochemical and isotope methods are also applied. The reconstructed continuous mass-balance time series

Bohemia ; Cirque ; Crystalline rocks ; Czech Republic ; Dating ; Firn ; Geomorphology ; Glaciation ; Mountain ; Pleistocene ; Roche moutonnée
combined with 10Be dating shows the occurence of glaciation. Permanent ice and firn fields were still present in the upper part of cirques and in plateaus up to around 3-4 thousand years ago. - (MS)

Cloud cover ; Firn ; Heat balance ; Mountain ; Poland ; Precipitation ; Summer ; Tatra Mountains
This paper presents the results of the first measurements and calculations of the energy used in the process of snow-melt on the surface of the Mięguszowiecki Glacieret - the largest firn-ice form in the Polish Tatra Mountains. The investigations

Altitude ; China ; Firn ; Fluvial water ; Hydrology ; Isotope analysis ; Meltwater ; Oxygen 18 ; Precipitation ; Sampling ; Temperature ; Water cycle ; Watershed ; Xinjiang
, in surface firn, in glacier meltwater and in stream water.

250 years of accumulation, oxygen isotope and chemical records in a firn core from Princess Elizabeth Land, East Antarctica

Air temperature ; Archaeology ; Chile ; Climate ; Climatic variation ; Environment ; Firn ; Glaciation ; High mountain ; Precipitation ; Snow

Canada ; Firn ; Glacial features ; Lateral moraine ; Model ; Moraine ; Mountain ; Rocky Mountains ; Slope dynamics

Alps (The) ; Climatic variation ; Firn ; Geomorphology ; Glacier ; Methodology ; Moraine ; Switzerland ; Tectonics

in higher precipitation in the firn area. Annual accumulation at equilibrium line comes up to 800 to 900 mm in the head of the Yarkant valley and 1 500 to 2 000 mm around Qogir area.

Based on the Geladaindong ice core δ oxygen-18 record from firn basin of the Guoqu glacier, the spring and summer air temperature time series were reconstructed, and the annual and decadal variational characteristics of spring and summer air

of and beneath the snowbed together with field estimation of snow (and firn) density.

in autumn 1997. Preliminary results from Unteraar Glacier are presented, and the potential of this method for the generation of DEMs of firn area is discussed.

Discharge ; Drainage ; Firn ; Glacier ; Greenland ; Meltwater ; Runoff ; Seasonal variability ; Snow

On the geoecology of southern Tibet. Measurements of climate parameters including surface - and soil - temperatures in debris, rock, snow, firn and ice during the south Tibet - and Mt. Everest expedition in 1984 in Tibet and High-Asia-Results

Résultats de la recherche (38 résultats)