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8/2/2019 Bezzi Et Al, .... - Poster Cu Avalanse - GIS Si Dendro
1/2
46 N
10 E
GIS and DENDROCHRONOLOGICAL
TECHNIQUES for AVALANCHE
HAZARD MAPPING
GIS and DENDROCHRONOLOGICAL
TECHNIQUES for AVALANCHE
HAZARD MAPPING
POTENTI AL
RISK
CLASSES
class 1
class 1
class 3
class 3
class 2
class 2
> 4 0 %
< 4 0 %
coverage
Pas tu res and naked g round
2 5 4 t r e e s/ h a
1 1 5 t r e e s/ h a
m e a n n u m b e ro f t rees per ha .
DENSI TY AND COVERAGE
STUDY AREAS:STUDY AREAS:AI MS OF THE W ORK:AI MS OF THE W ORK:
T o u n d e r st a n d t h e a v a l a n ch ea ct i v i t y o f a p e cu l i a r s it e
T o recons t ruc t spa t ia l ex t en t o fpas t ava lanches
T o m a p a v al a n ch e r i s k o n t h eb a se o f t o p o g r ap h i c al a n dvege ta t iona l pa rame t e rs , i n
o rde r to ge t R IS K MA PS
T o eva lua te the p r o tec t i ver o l e o f t h e v e g et a t i o n
GRASS GI S
DENDROCHRONOLOGY
MORPHOLOGI CAL RISK MAPVEGETATI ON MAP
s lo p e m a p
TOPOGRAPHICAL CRITERI A
D i g i t a lE levat ion
Model
Dig i ta l
E levat ion
Model
a sp e ct m a p
VEGETATI ON MAP
VEGETATI ON MAP
RISK MAP
RISK MAP
MORPHOLOGICAL
RISK MAP
MORPHOLOGICAL
RISK MAP
Fores tM a n a g e m e n t
Plan
Fores t
M a n a g e m e n t
Plan
c a t eg o r i e s o f t h evege ta t i on
% s p e ci e s
dens i t y , cove rage
Giovann i COMUNELLO* , Marco BEZZI* , MarcoCio l l i *
* D e p a r t m e n t o f En v i r o n m e n t a l a n d Ci v i l
En g i n e e r i n g - U n i v e r si t y o f T r en t o ( I t a l y )V i a M e si a n o 7 7 , 3 8 1 0 0 T r e n t o t e l . 0 4 6 1 / 8 8 2 6 2 5
e-mai l : g iovann i . comunel lo@emai l . i t ;
marcobezz i@inwind.com
Tof Larch trackDETERMI NATI ON OF POTENTI AL RI SK
I NVOLVI NG FOREST AREAS W I TH GRASS:
DETERMI NATI ON OF POTENTI AL RI SKI NVOLVI NG FOREST AREAS W I TH GRASS:
D e fi n i t io n o f :
MORPHOLOGI CAL AVALANCHE RISK
d e p e n d e n t o n :
TOPOGRAPHI CAL FEATURES OF
GROUND SURFACE
D e fi n i t io n o f :
MORPHOLOGI CAL AVALANCHE RISK
d e p e n d e n t o n :
TOPOGRAPHI CAL FEATURES OF
GROUND SURFACE
Two avalanche tracks in Pejo Valley:
Tof Larch track Val dei Spini track
Va l de i Sp in i track
Tools
D e fi n i t io n o f :
POTENTI AL RISK
d e p e n d e n t o n :
VEGETATI ON PATTERN
( i . e. c o ve r a ge a n d d e n si t y ,
t r e es p e r h a . )
D e fi n i t io n o f :
POTENTI AL RISK
d e p e n d e n t o n :
VEGETATI ON PATTERN( i . e. c ov e r ag e a n d d e n si t y ,
t r e e s p e r h a .)
Th e se i n f o r m a t i o n a r e
o v e r la y ed t o o b t a in t h e
RISK MAP
Th e se i n f o r m a t i o n a r e
o v e r la y e d t o o b t a in t h e
RISK MAP
Slope changes
i n s i d e m i n i m u m s u r f a ce s
(625 m2)
M i n i m u m s u r f a c e (625 m2)
S l op e c h a n g e _ _ _ _ _ _ _ _
South-Eas t expos i t ion
Tof Larch trackVa l de i Sp in i track
( 10)
s lope: 28 < < 5 5
m i n i m u m s u r f a ce s ( 6 2 5 m 2)
s lope changes : 1 0
( 10)
1
2
compressione
trazione
3
1 2 0
3 1 0
1
2
compressione
trazione
3
1 2 0
3 1 0
Proceedings ofthe Open source GIS -GRASS users conference 2002 -Trento, Italy, 11-13 September 2002
8/2/2019 Bezzi Et Al, .... - Poster Cu Avalanse - GIS Si Dendro
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