ons of 
'ehavior 
1e years 
6km? 
153km 
2 
17km? 
to retreat 
masses 
1 data 
lifficult, 
pulated 
ological 
lues of 
outhern 
climate 
of the 
at there 
e in the 
36 until 
agonian 
ckly to 
y are 
that is, 
blation, 
. affects 
at these 
»laciers' 
f them. 
lysis of 
ed more 
detailed studies in order to we be able 
to conclude that these variations in the body of 
the glaciers are really caused by global 
warming. However, it appears that the recent 
rapid recession is a response to the recent 
world-wide warming trend. 
4. ACKNOWLEDGEMENTS 
The authors are grateful to United States 
Geological Survey (USGS) and National 
Institute for Space Research (INPE) by images. 
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