Transcript Διαφάνεια 1

4th International Symposium of Maritime Security
Safety & Environmental Protection
Spatial analysis of oil spills from marine accidents
in Greek waters
Authors: Giziakis K., Kanellopoulos N., Gialoutsi S.
University of Piraeus
Department of Maritime studies
30-05-2013
1. General Overview
What is the problem?
 Marine accidents and incidents ….oil spill….degrading
the environment
What is the target?
 Examine the implementation of a framework analysis
of shipping based oil pollution by using spatial analysis
and geographical information system.
 Usage thematic maps for the distribution of oil spills
 Identify hot spot areas in Greek waters
2. Using Geographical Information System in…
Maritime accident analysis:
Usage of statistical methods to identify
areas, where accidents and activities
are concentrated
Cluster methods……accident prevention
…..search and rescue centers allocation
Monitoring oil spills
Ability to extract oil parameters
Map oil spills and define the trends
3. Spatial analysis of oil spills from marine accidents
in Greek waters
Data
311 accidents from 2001 to 2011
Variables:
→ shipdata
→Geographical information (latitude, longitude, sea area)
→ Size of pollution
→Type of accident
4. Maritime traffic in Greece
5. Descriptive Statistics
Figure1: Number of accidents per month
Figure 2: Accidental distribution by shiptype
40
Other ship
30
Container ship
20
Bulk Carrier
10
Tanker
:
General Cargo
0
J
F
M
A
M
J
J
Month
A
S
O
N
D
Passenger Ship
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
6. Descriptive Statistics
Figure 3: Distribution of accidents under flag registration
Grey
3,0%
Black
11,0%
White
74,0%
1,7%
Albania
Cambodia
Georgia
1,7%
2,1%
St Vincetes
2,1%
North Korea
2,8%
Liberia
1,7%
Italy
2,4%
4,5%
Turkey
Bahamas
3,1%
Antigua Barbuda
1,7%
5,6%
Malta
Panama
10,4%
Greece
33,7%
N/A
11,8%
14,6%
Other flags (less than 5 accidenents)
0
110
220
7. Spatial distribution analysis of marine accidents
8. Spatial distribution analysis of marine accidents
and oil spills
9. Spatial analysis of marine accidents in Saronikos Gulf
10. Spatial analysis of marine accidents in Saronikos Gulf
11. Conclusions
 GIS is an undisputable efficient tool for the analysis of
information at marine accidents and on oil spills
 Saronikos Gulf: high density of maritime traffic….small
spots of polluted areas
 Severe marine accident in sea could surpass in size
small operational oil spilled accidents
 What follows next?
Insert factor “vessels movements” …..fomrulate a
regression model …..calculate accidental risks
Thanks for the attention