impact of global change on the coastal areas coastal vulnerability roberto r. kokot - fcen (uba)...
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Impact of Global Change on the Coastal Areas
COASTAL VULNERABILITY
Roberto R. Kokot - FCEN (UBA)
Buenos Aires - Argentina
Location Map
Variables in the Coastal Vulnerability Index. (Gornitz et al., 1994)
INUNDATION
1.Coastal Elevation
Methodology
a. Construction of Topographic Maps
b. High Resolution Topography
Buenos Aires Coastal Zone
Topographic Map of Buenos Aires City
Bahía Samborombón
Zone
Southeast Zone
b.Improvement on, Contour Lines
INUNDATION
2. Local Subsidence
Sea Level Trend in Buenos Aires.
1.7 0.1 mm / year1905 – 2001
D’Onofrio E.E. Y Fiore. M.E., 2002
600
650
700
750
800
850
900
950
1000
1050
1900 1920 1940 1960 1980 2000 2020
Tiempo (años)
Niv
el d
el a
gu
a (m
m)
Nivel medio anual Nivel medio filtrado Recta de regresión
EPISODIC INUNDATION
1. Tide Range
Tidal RangeBuenos Aires Port
Servicio de Hidrografía Naval (2003)
Levels in meters
2003 Prediction
High Tide Low Tide
Tidal Range
Higher Mean Lower Mean Higher Mean
1,52 1,04 0,16 0,51 1,17 0,53
EPISODIC INUNDATION
2. Storms
Sudestadas april 15/1945
+ 4,50
Annual Frequency
D’Onofrio E.E. Y Fiore. M.E., 2002
0
2
4
6
8
10
12
14
16
18
Años
Eve
nto
s
EROSION1. Geology
Buenos Aires Coastal Zone
Bahía Samborombón
Zone
EROSION
2. Landforms
Geomorphologic maps
Buenos Aires Coastal Zone
Paraná DeltaEvolution
Codignotto y Medina (2003)
SamborombónZone
Samborombón Bay Evolution
Codignotto J.O. y Aguirre, M. (1992)
EROSION
4. Wave Height
Wave Heights
Maximum heights, associated periods and true directions for each of the eight analysed wave directions Romero S. (2002)
General WaveDirection
Maximum Height(m)
Associated Period(sec)
True Direction(degrees)
N 2.41 4.8 0NE 2.22 5.2 34E 4.55 11.0 101
SE 4.39 8.7 152S 4.55 8.8 174
SW 3.80 8.3 203W 2.71 7.0 253
NW 2.51 6.7 321
0 20 40 60 80 100 120 140
D istance (km )
0
20
40
60
80
100
Dis
tan
ce (
km)
w ave d irection : S ETp :10 sec.H m o : 1 .25 m
Initial conditions:
depths in m eters
B uenos A iresP rovince
R . O . de l U ruguay
A rgentina
0 20 40 60 80 100 120 140
D istance (km )
0
20
40
60
80
100
Dis
tan
ce (
km)
w ave d irection : ETp : 8 sec.H m o : 1 .25 m
Initial conditions:
depths in m eters
B uenos A iresP rovince
R . O . de l U ruguay
A rgentina