Greece: Satellite Images Show Oil Spill
Tanker sinks near Athens, spilling oil onto the Salamis coastline
Satellite imagery obtained by European Space Imaging shows the oil spill on the Salamis coastline.
Munich, 19/09/17
A tanker carrying 2,500 tonnes of oil and fuel sank near Athens on September 10, polluting the Greek coastline.
European Space Imaging captured a series of satellite images of the site between September 13 and 15, using Digital Globe's satellite GeoEye-1.
"The very high resolution satellite images show us precisely where the oil is," says Dr Melanie Rankl of European Space Imaging. "They reveal that it has spread over more than 1.5km of the Salamis coastline, and a smaller amount has traveled south to the Attica coast."
Emergency barriers have been placed around the sunken ship and affected coastline in an effort to prevent the oil from spreading further, but when seen from space it is clear that a significant amount is still floating freely. Authorities estimate the clean-up will take more than four months.
Just seven minutes after GeoEye-1 collected images of the site, the European Space Agency satellite Sentinel-2A did the same. This allowed the DLR Maritime Safety and Security Lab in Neustrelitz, Germany, to compare GeoEye-1's 50cm resolution data with Sentinel-2A's 10m resolution data.
"The red-brown areas of the processed images represent probable oil pollution," says Egbert Schwarz, Head of the Lab. "So while the suspected spill is visible in the Sentinel-2A image, it is the clarity in the high resolution GeoEye-1 image that allows us to confirm our suspicions."
A comparison prepared by the DLR Maritime Safety and Security Lab shows the difference in the 10m resolution data from Sentinel-2 (upper two images, © Copernicus data [2017]) and the 50cm resolution data from GeoEye-1 (lower two images, © European Space Imaging).
Salamis lies south of Eleusis, where the majority of Greece's crude oil is imported and refined. It is thought to be one of the most polluted areas in Greece, but the oil spill represents a local environmental disaster.
"The satellite imagery not only allows authorities to assess the extent of the environmental damage, it may also be used to investigate possible causes of the incident," says Dr Rankl.
It is unclear why the Agia Zoni II sunk, as weather conditions were good at the time and the vessel was at anchor. The ship was built in 1972 and was capable of carrying 3,205 tonnes - it flew the Greek flag.
Visual analysis by European Space Imaging staff reveals the presence of oil floating between the tanker and the coast - it can seen as a lighter blue.
Containment buoys are visible around the sunk tanker.
The tanker can be seen approximately 2km away from the affected coastline.
About European Space Imaging
European Space Imaging (EUSI) is a leading supplier of global very high-resolution (VHR) satellite imagery, direct satellite tasking and derived services to customers in Europe, North Africa and CIS countries. They offer customers access to the highest resolution imagery (50-30 cm) from the largest constellation of sub-meter satellites and to the most extensive worldwide VHR data archive. With a reputation for expert and personalized customer service they have been providing tailored VHR imagery solutions to meet their customers’ diverse project requirements since 2002.For more information, visit www.euspaceimaging.com.
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