686 
43’II'- 
legen 0 
| C | COPPICE t mostly Quorcus %pp) 
0 
CHESTNUT GROVE 
0 
QUARRY 
| c</| DEGRADED COPPICE 
0 
SOWN 
0 
LAKE 
| P | PASTURE 
0 
SOWN WITH TREES 
0 
STREAM 
| Pt | PASTURE WITH TREES 
0 
DENUDED AREA 
0 
URBAN AREA 
Figure 2 . Land use map of the study area. The map has been obtained from visual interpretation of the IR False 
Colour stereo pairs. Take date: May 1, 1981. The 3 suspected areas and subframes are outlined. 
Brief separate descriptions of the 3 suspected zones 
follow. 
a. Fosso Girisondola. Two sub-frames have been 
cut out where the highest textural homogeneity was 
preserved; they have been labelled G1 and G2 respec 
tively. They concern with densely and mostly uniform 
vegetated spots, with small foliage of the individu 
al tree. 
b. Lagoni. It coincides with the old exploited geo 
thermal field. The sub-frame LG corresponds to an ir 
regular deciduous wood due to different growing sta 
ges. Dimensions of trees are greater than in the o- 
ther considered sites. 
c. Poggio Mauriccia. The subframe MA corresponds to 
a woody area where trees show a more uniform structu 
re than in the previous two cases. 
2.1 Geothermal outline 
Recent studies (Batini et al. 1985) have produced 
maps where distributions of physical parameters of 
the reservoir are plotted. 
Table 2. Presumed values of depth, temperature and 
pressure of the top of the reservoir, at h sites un 
der investigation. 
Depth from the 
surface (m) 
Temperature 
( °c) 
Pressure 
2 
(kg/cm ) 
G1 1150 
100 
35 
G2 800 
80 
30 
LG 120 
150-200 
30 
MA 1100 
150-200 
35 
Data conc 
and extra 
The top 
LG which 
othermal 
fter Calo 
situation 
SSM' 
Figure 3. 
field. Ar 
G2 and MA 
The top o: 
th the co' 
G1,G2 and 
nie featu: 
fractures 
uid. This 
potential 
3 DIGITAL 
The inves' 
ctral sigi 
False Coli 
3.1 Image 
In order • 
camera lei 
cesses we 
occupies 1 
077 and 1< 
the re qui] 
The h si 
ned, at a 
of a drum 
Table 3. ] 
the origii 
Site 
ï F] 
Gl 
G2 
LG 
MA 
* 1 
pixel 
Each 
. winde 
the 
3 cole