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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 PiraeusDepartment of Maritime studies
30-05-2013
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
1. General Overview
Maritime accident analysis:Usage of statistical methods to identify
areas, where accidents and activities
are concentratedCluster methods……accident prevention
…..search and rescue centers allocation
Monitoring oil spillsAbility to extract oil parametersMap oil spills and define the trends
2. Using Geographical Information System in…
Data311 accidents from 2001 to 2011
Variables: → shipdata →Geographical information (latitude, longitude, sea area)→ Size of pollution→Type of accident
3. Spatial analysis of oil spills from marine accidents in Greek waters
4. Maritime traffic in Greece
5. Descriptive Statistics
Figure1: Number of accidents per month
0
10
20
30
40
J F M A M J J A S O N D
Month
Figure 2: Accidental distribution by shiptype
0% 5% 10% 15% 20% 25% 30% 35% 40% 45%
Passenger Ship
General Cargo
Tanker
Bulk Carrier
Container ship
Other ship
:
6. Descriptive Statistics
Figure 3: Distribution of accidents under flag registration
33,7%
1,7%
1,7%
2,1%
2,1%
2,8%
1,7%
2,4%4,5%
3,1%
10,4%
5,6%1,7%
14,6%11,8%
74,0%
3,0%
11,0%
0 110 220
Other flags (less than 5 accidenents)
N/A
Greece
Panama
Malta
Antigua Barbuda
Bahamas
Turkey
Italy
Liberia
North Korea
St Vincetes
Georgia
Cambodia
Albania
White
Black
Grey
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