|Sonar Survey Chief Scientist: Dwight Coleman, URI/GSO|
|ROV Survey Chief Scientist: Robert Ballard, URI/GSO|
|Port/Location: Santorini, Greece to Balaklava, Ukraine|
|Sonar Survey Dates: May 3-15, 2006|
|ROV Survey Dates: May 16-25, 2006|
|Meet the Teacher:|
|View pictures from this expedition!|
The expedition to the Black Sea is building upon previous years' surveys in which well-preserved ancient shipwrecks were located and documented. One of these wrecks was found near Turkey within the anoxic layer of the sea, which is depleted in oxygen due to layering, or stratification, of the water column. This stratification occurs because the shallow outflow channel at the Bosporus Strait, the connection between the Black and Aegean Seas, does not allow for the deeper, denser water to exit. Low circulation creates the anoxic condition deeper than 150 meters, creating a hostile environment for marine organisms. Organisms that eat wood and other organic material do not have enough oxygen to survive in the anoxic water; the deep water is therefore a unique environment in which organic archaeological material can be very well-preserved.