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Oil spill modelling predictions in the Mediterranean sea :
Lebanon oil spill pollution

 

On 13 and 15 July 2006 the Jieh power utility located 30 km south of Beirut and directly on the coastline was hit by bombs. Part of the storage tanks caught fire. The fuel that did not catch fire was spilled into the Mediterranean Sea. The estimated amount of oil spilled ranges from 10,000 to 20,000 tons. 

 

                 

 

Following a request from several end-users, such as REMPEC-Regional Emergency Centre for Response to Oil spill Pollution in the Mediterranean, the Cyprus Ministry of Environment, the Cyprus Civil Protection Agency and the European Commission Civil Protection co-operation Mechanism;  

the Cyprus Oceanography Centre at the University of Cyprus applied the Mediterranean oil spill model-MEDSLIK in the NE Levantine, in order to predict the dispersion and the movement of the oil spill in the sea area off Lebanon. The MEDSLIK oil spill model constitute one of the oil spill models of the EU MERSEA-IP that is aiming to establish the Marine Core services of the GMES.
 
For the MEDSLIK oil spill model application the high resolution operational CYCOFOS ocean forecasting products, available on a daily base, were used (http://www.oceanography.ucy.ac.cy/cycofos) . The CYCOFOS ocean model is nested operationally with the ALERMO/ MFS-OPA modelsThe MFS-OPA model  constitutes one of the EU MERSEA-IP regional ocean forecasting models. The MEDSLIK oil spill model used also the high frequency SKIRON winds.
 
Several scenarios were carried out soon after the Cyprus Oceanography Centre at the University of Cyprus received the relevant oil information from REMPEC.
The CYCOFOS/ MFS-OPA  forecasts show that from 13 July up to day, off Lebanon and Syrian coast their is a strong northward currents  with sea temperatures as high as 28-30 deg. C, while the SKIRON winds are mostly south-westerly.
 
The MEDSLIK oil spill simulations showed that the oil was moved northward by the currents and the winds. Moreover, the MEDSLIK application showed that a little less than 20% of the oil was evaporated within the first 2 days, while a little less than  80% of the oil was  stranded on the shores along Lebanon and South Syria, and about 0.25% was remained at sea (i.e. about 40 tonnes of oil if considering a 15000 tonnes spill).
These results were validated later on from: a) the observations of the Ministry of Environment of Lebanon, b) several remote sensing images, such as those from MODIS that were analysed at the Cyprus Oceanography and the SAR images analyzed by the JRC in Ispra, c) other oil spill modelling applications where lower resolution ocean forecasts were used.

             

 
The operational MEDSLIK oil spill modelling application in the NE Levantine assisted the agencies in charge to response in case of oil spills incidents and the decision makers in Europe and in Lebanon to obtain a first overview of the area covered of the spilled oil along the coast of Lebanon and south Syria and demonstrated the benefit of having  an operational oceanographic forecasting system in place, that is part of the MERSEA- GMES Marine Core Service.

 

Position of the oil at the coast after 28 day simulation

The Lebanese Ministry of Environment Mr. Yacoub R. Sarraf and the Director General INFO/RAC-MAP of the United Nations Environmental Programme were expressed their thanks for the precious results of the MEDSLIK oil spill application in the Lebanon oil spill pollution. Particular,  the Lebanese Minister of Environment mentioned that the results of the oil spill model confirmed their observations and are useful for the assessment of the oil spill situation in the ground and will provide a basis for selecting the priority sites to be cleaned during the clean-up operations. The results of the MEDSLIK oil spill application are included in the "International Assistance Action Plan for the oil pollution in Lebanon" prepared by a group of experts supervised by REMPEC on the 15 August 2006 and it was presented on the 17 August 2006 at the Athens meeting of several UN, EU and regional Mediterranean countries high level officials,  in order to discuss the efforts to avert a potential environmental catastrophe stemming from a massive oil spill off the coast of Lebanon and ways in assisting  Lebanon in the clean up operations.




MARINE ENVIRONMENT AND SECURITY FOR THE
EUROPEAN AREA INTEGRATED PROJECT
IFREMER, BP 70
29280 Plouzané France
merseaip@ifremer.fr