Suretta Sud Glacier - Servizio Glaciologico Lombardo

mass balance
•
Socket GPS receiver, able to transmit
•
the positions to the PC via Bluetooth;
ArcPad software, to display in realtime
the operator’s position on the
topographic map, CTR 1:10000.
The entire glacial surface has been traversed
along paths designed to produce: the best possible
coverage of the glacial area, a set of data
best representing the slope gradient variations
and, finally, a sufficiently precise contour
DATA PROCESSING AND RESULTS
The main data processing phases are listed
and briefly described:
• calculation of the horizontal and vertical
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of the glacier’s margins (in our case, the greater
part of the edges can be travelled over).
The survey, in the specific case, takes about 3
hours to complete. As an example, following are
some graphics that were produced in the evaluation
phase of the 2003-2004 mass balance.
The paths followed during the survey and the position
of the reference point are shown in Fig. 3.
Fig. 3: Suretta Sud Glacier: paths followed
during the September, 2004
survey of the glacial surface using the
differential GPS technique; the reference
point position is marked in red.
coordinates of the paths followed during
the survey; the points were acquired
every 3” and the GPS raw data were