|
Six further pits were dug in summer 1964 at a distance of 1 to 2 km from this pit
where the late summer horizon of 1960 could be reached at a depth of approximately
6 m. Samples were taken and examined also from these pits according to the above
method.
FLUCHTKOGE^pOO
-3450
~3400
4—3350
KESSELWANDFERNER (1958)
(ÖTZTAL ALPS)
oP6
oP5
^-(KESSELWANDSPITZE
500 m
oP2
-3300
-3250
-3200 3150^'
31fi0j050
B
P3
L58
jPl
OAHMANNSP
3300
|
3250 '"-
33C
°P4
-3150
^ -3200
^UTHSPITZE
-3250
Fig. 1 — Plan of the pits on the Kesselwandferner (small pits at P 1 to P 6, 20 m
pit at L 58).
From these samples the total beta-activity, the radioactivityofCs —137 and the tri¬
tium content were determined. Only the results of the tritium determinations are
discussed in the present paper. Part of the other studies have been published already (
3
).
Thermonuclear bomb tests carried out in the course of the past decade have
strongly influenced the tritium content of the air and the precipitation. It can, therefore,
be expected that the tritium content varies in the firn deposits of glaciers. In the case
of the temperate Alpine glaciers, however, the infiltrating melt-water may cause a
strong fading of the maxima and minima of activity. The present study seeks to find
out whether variations in the tritium content of the firn deposits of an eastern alpine
glacier can be determined similar to those found in precipitation.
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| Tritium content in the firn layers of an alp... (1967) | ||||||||||||||||||||||