MIT researcher designed technology that mapped ancient Phoenician shipwrecks off the coast of Israel


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Denise Brehm
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Department of Civil and Environmental Engineering

CAMBRIDGE, MA -- A team of oceanographers and archaeologists including Massachusetts Institute of Technology Professor David Mindell discovered two ancient Phoenician ships wrecked in the Mediterranean Sea off the coast of Israel. The ships are the oldest ever found in the deep sea.

The expedition team, led by oceanographer Robert D. Ballard of the Institute for Exploration in Mystic, CT, discovered the ships on Friday, June 11 more than 1,000 feet below the surface using advanced deep-sea sonar equipment. The team made detailed sonar map images of the parts of the ships covered by mud using an instrument developed by Mindell, who is the Dibner Professor of the History of Engineering and Manufacturing at MIT.

The scientists believe that the ships were lost in a violent storm while traveling from Phoenicia (now Lebanon) to Egypt or Carthage at about 750 BC laden with a cargo of wine stored in ceramic amphorae.

The larger of the two ships is about 18 meters (58 feet) long; the other is about 48 feet in length. Heavy stone anchors lie at bow and midship. Crockery for food preparation, an incense stand and a wine decanter mark the galley. These and other items leave little doubt that Phoenician crews occupied the two ships, according to Lawrence Stager of Harvard University, who led the team of archaeologists on the expedition.

ENGINEERING FEAT

Archaeology in the deep sea is made possible by remotely-operated vehicles capable of scanning the bottom of the ocean with great precision at depths of up to 6,000 meters. This new ability to find shipwrecks, thoroughly document their position and recover artifacts from them at depths well below the reach of scuba divers suddenly placed ships that went down in the deep seas within the scope of archaeologists.

Jason, the remotely-operated vehicle that was used on the current expedition in the Mediterranean, was built at the Woods Hole Oceanographic Institution and partially designed by Mindell. Jason was equipped with lights and television cameras to transmit images back up to the ship's control room.

Once the Jason robot located the Phoenician ships, the investigators obtained detailed sonar map images of the sites, using a new instrument designed by Mindell to map the parts of the ships submerged in mud. That instrument, called a sub-bottom profiler, uses narrowly-focused sound beams combined with the precise control of Jason to 'see' those areas of the shipwrecks covered by soil on the ocean floor.

"This is the first time anything of this sort has been tried," said Mindell. "It was a great success and clearly reveals the ship's structure and location under a pile of exposed amphoras. The maps also provide critical information to the project's archaeologists about how the ship sank and helps the planning for a future excavation.

"The goal is to allow an archaeologist to do 'virtual excavation,' by simply peeling off layers in a computer model, without the need to actually dig -- or with much less digging than would otherwise be necessary," said Mindell.

Based upon the images obtained using this technology and a number of artifacts recovered from the sites, archaeologist Stager was able to establish the ships' age, origin, cargo and probable destination.

The ships are the oldest ever found in the deep sea, Ballard said; the oldest shipwreck ever discovered was a trading ship from 1300 BC, found in less that 200 feet of water off Turkey.

Mindell, an electrical engineer and historian of science and technology, participated in the 1987 Mediterranean Sea expedition with Ballard that yielded amphorae and other artifacts from ancient Rome and Carthage. He was also a member of the search and survey team on the National Geographic Midway expedition that discovered the USS Yorktown more than three miles deep in the Pacific Ocean last year.

Mindell and MIT hosted the first conference on deep sea archaeology in January, which brought together scientists from around the world who believe that the new field will allow archaeologists to piece together the trade routes of the ancient world.

The current expedition was sponsored in part by the National Geographic Society, the United States Office of Naval Research and Leon Levy. Dana Yoerger and Hanument Singh of the Woods Hole Oceanographic Institution, Shelly Wachsmann of the Institute of Nautical Archaeology at Texas A&M University and Louis Whitcomb of Johns Hopkins University were also key players in the expedition.


Topics: Oceanography and ocean engineering

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