Data Description

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Alean, J et al. (1983): Table 2: Firn temperature, ram resistance, mass balance and submergence velo city measurements on Colle Gnifetti. doi:10.1594/PANGAEA.803878,
Supplement to: Alean, Jürg; Haeberli, Wilfried; Schädler, Bruno (1983): Snow accumulation, firn temperature and solar radiation in the area of the Colle Gnifetti core drilling site (Monte Rosa, Swiss Alps): Distribution patterns and interrelationships. Zeitschrift für Gletscherkunde und Glazialgeologie, 19(2), 131-147, hdl:10013/epic.40215.d001
Distributional patterns of glaciological parameters at the Colle Gnifetti core drilling site are described and their interrelationships are brietly discussed. Observations within a stake network established in 1980 furnish information about snow accumulation (short term balance), submergence velocity of ice tlow (long term balance), ram hardness (melt layer stratigraphy), and firn temperature. In addition, a numerical model was used to estimate local variations of available radiant energy.
Melt layer formation is considerably more intensive on the south facing parts of the firn saddie where incoming radiation is high. These melt layers seem to effectively protect some of the fallen snow from wind erosion. As a result, balance ist up to one order of magnitude larger on south facing slopes. Heat applied to the surface is therefore positively correlated with balance, whereas the relation between solar radiation and firn temperature is less dear. Distributional patterns of submergence velocity confirm that the observed spatial variability of surface balance is representative for longer time periods and greatly intluences the time scale and the stratigraphy of firn and ice cores from Colle Gnifetti.
Latitude: 45.927222 * Longitude: 7.876944
Date/Time Start: 1980-08-14T00:00:00 * Date/Time End: 1980-08-15T00:00:00
Colle_Gnifetti * * Latitude: 45.927222 * Longitude: 7.876944 * Location: Colle Gnifetti, Monte Rosa, Swiss Alps *
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Number *NoAlean, Jürg *of stake
2DATE/TIME *Date/TimeGeocode
3Temperature, in rock/sediment *t°CAlean, Jürg *Thermometer *
4Difference *DiffAlean, Jürg *of temp. to hole 33 [°C]
5Average *avgAlean, Jürg *ram resistance [kg] of top 2 m
6Average *avgAlean, Jürg *ram resistance [kg] of 80/81 layer
7Number of levels *Levels#Alean, Jürg *hard layers, ram resistance [kg] of top 2 m
8Number of levels *Levels#Alean, Jürg *hard layers, ram resistance [kg] of 80/81 layer
9Mass balance in water equivalent per year *MBmm w.e./aAlean, Jürg *1980-08-17 till 1981-08-14
10Mass balance in water equivalent per year *MBmm w.e./aAlean, Jürg *1981-08-14 till 1982-07-23
11Velocity magnitude *Vel magm/aAlean, Jürg *recalculated from [cm/yr] to [m/a]
183 data points

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