Embed Size (px)
Citation preview
Report cardsAjaccio 1er février 2019
Bassins versants Températures
HydrologieEcologie
Antoine Orsini & Christophe Mori,University of Corsica, UMR SPE 6134/ FRES 3041, 20250 Corte, France
Approche Bassins versants
Ajaccio (alt. 20 m)
y = 0,0266x - 37,615
R² = 0,6167
Corte (alt. 436 m)
y = 0,0572x - 100,4
R² = 0,7217
Bastelica (alt. 802 m)
y = 0,0668x - 120,97
R² = 0,5582
0
2
4
6
8
10
12
14
16
18
1940 1950 1960 1970 1980 1990 2000 2010 2020
tem
per
atu
re ( C
)
Ajaccio Corte Bastelica
Variation of the average air temperatures
800
850
900
950
1000
1050
1100
1150
1200
1250
197
0
197
2
197
4
197
6
197
8
198
0
198
2
198
4
198
6
198
8
199
0
199
2
199
4
199
6
199
8
200
0
200
2
200
4
200
6
200
8
201
0
201
2
201
4
201
6
Ev
apo
tran
spir
atio
n (
mm
)
AJACCIO BASTIA
Evapotranspiration (mm) in Ajaccio and Bastia since 1970
AjaccioETP > 1 100 mmPrecipitation > 630 mm
-4
-3
-2
-1
0
1
2
3
4
5
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
m3
Vecchio
-15
-10
-5
0
5
10
15
19
70
19
72
19
74
19
76
19
78
19
80
19
82
19
84
19
86
19
88
19
90
19
92
19
94
19
96
19
98
20
00
20
02
20
04
20
06
20
08
20
10
20
12
20
14
20
16
m3
Tavignano
Flow rate (m3) of several Rivers compared to
the average (1960-1990)
Hydrology
• Hydrologic year2016
• become…
• Common year
Changes in the daily average flow rate of the Tavignano 2016
Flood of Tavignano
2016
• Hydrological year before 1985
• Hydrological year since 1985
J F M A M J J A S O N D
0
2
4
6
8
10
12
14
16
18
20
flo
w r
ate
(m
3)
Tavignano
before 1985 since 1985
-
1,00
2,00
3,00
4,00
5,00
6,00
7,00
8,00
9,00
10,00
J F M A M J J A S O N D
flo
w r
ate
(m
3)
Vecchio
before 1985 since 1985
Annual hydrological flow (m3) of Tavignano River and Vecchio River
• The Taravo River in 2030
• Change :
Annual hydrological flow (m3) of Taravo River
Mediterraneanrain-snow type
Mediterraneanrain type
A Codole les proliférations de cyano sont très fréquentes, on dépasse tous les ans 100 000 cyano/ml et en 2012 on approche les 100
millions.
1
10
100
1 000
10 000
100 000
1 000 000
10 000 000
100 000 000Codole
Occurrence des proliférations de cyanobactéries (cellules par millilitre) source OEHC
Problématique des Cyanobactéries
Warm stenothermal organisms / biotopes increases
Cold stenothermal organisms / biotopes reduced
Merci de votre attention
