Showing posts with label Black sea. Show all posts
Showing posts with label Black sea. Show all posts

Tuesday, October 25, 2016

Archaeologists discovered 40 ancient shipwrecks at the bottom of the Black Sea.

A group of maritime archeologists studying sea levels in the Black Sea have uncovered over 40 shipwrecks this year as a “complete bonus.”


The Black Sea Maritime Archeology Project has been trawling the seabed to understand how quickly the water level rose after the last Ice Age, 20,000 years ago. But their surveys ended up uncovering dozens of previously unknown wrecks. Many of the discoveries are in excellent condition, thanks to low oxygen levels below 150 meters, which slows decay.

“The wrecks are a complete bonus, but a fascinating discovery, found during the course of our extensive geophysical surveys,” said Jon Adams, a University of Southampton maritime archaeologist and principal investigator of the project, in a statement.

The team took thousands of still photographs of the shipwrecks, and then used photogrammetry, a technique that uses software to calculate the positions of millions of points in space, to build 3D models of the discoveries.
Some of the ships discovered are thousands of years old, dating to the Byzantine empire, while others are from the Ottoman period.
Hulls, masts, tillers, and rudders are all clearly discernible. “Certainly no one has achieved models of this completeness on shipwrecks at these depths,” said Adams.

Friday, December 26, 2014

Russia battles to contain Black Sea oil spill.


A Russian Black Sea city declared a state of emergency on Thursday after a burst pipeline spewed oil into the landlocked water body, with stormy weather hampering cleanup efforts.
The pipeline near the town of Tuapse burst late on Tuesday, according to ChernomorTransneft, a subsidiary of Russia's main oil transport company Transneft.
"The wall of the pipeline broke due to... a landslide," the company said in a statement, adding that the rupture caused 8.4 cubic metres to leak out into the Tuapse river, which empties into the Black Sea.
Environmentalists warned however that the volume of the spill could be nearly 100 times greater than claimed by Transneft.
A sign that reads 'Prohibited area! No entry!' hangs on a barbed wire fence outside an area of Tuapse oil refinery in the Russian Black Sea coastal town of Tuapse. (Reuters photo)
The oil transport company said the damaged section of the pipeline — about nine kilometres (five miles) from the Black Sea coast — was under construction by a subsidiary of oil giant Rosneft and was not yet in use by Transneft.
Rosneft also operates a major oil refinery in Tuapse.
Russia's sea and river transport agency said a cleanup mission was launched on Wednesday afternoon, though stormy weather precluded the use of boats.
By Thursday, the local authorities declared a state of emergency in Tuapse and more than 300 workers were at the scene, according to the Krasnodar regional government website.
"There is a state of emergency for Tuapse city," a statement on the Krasnodar regional government website said. "Work is complicated by a storm, with waves two to three metres (up to 10 feet) high," it said.
Oil leaks are seen at the Tuapse river in the Russian Black Sea coastal town of Tuapse, December 24, 2014.
World Wildlife Fund said on Thursday that the spill already polluted 15 kilometres of the Black Sea shore, and accused Rosneft and Transneft of failing to act quickly and understating the real extent of the damage.
"According to WWF's information regarding the surface area and characteristics of the spill, the volume of the spill could be 500 to 700 tonnes (nearly 800 cubic metres)," WWF said Thursday.
The organisation said the consequences could have been avoided if the energy company alerted local authorities about the accident immediately instead of delaying its response for many hours.
Tuapse borders the resort city of Sochi, where Russia hosted the Winter Olympic Games in February.