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Japan:Underwater debris videotaped and analyzed

Thursday, October 13, 2011

Laaska News Oct. 13,2011

Researchers have found that the tsunami that devastated the town of Minamisanriku in Miyagi Prefecture on March 11th has left heavy debris scattered on the seabed along the coast.

They say their findings, based on video footage taken with underwater cameras, will provide clues toward rebuilding aquaculture farms destroyed in the disaster.

Reviving oyster and wakame seaweed farms in Shizugawa Bay poses a huge challenge to residents of Minamisanriku.

A research group comprising of scientists from organizations such as the University of Tokyo filmed the seabed in 61 locations along the Shizugawa Bay in September.

The University of Tokyo Ocean Alliance learnt that the heavy debris, including what appears to be a steel frame measuring several meters long, lay at the sea bottom, as well as tires and driftwood tangled in ropes and nets.

The underwater debris will hamper efforts to build new aquaculture farms along the coast.

The head of the ocean alliance, Tamaki Ura, says knowing beforehand what kind of debris lie underwater will lead to swift removal.

He expressed hopes that the state and local governments will utilize such methods to ensure an effective recovery of fishing and breeding grounds.


Laaska News.