Russian explorers reach bed of world’s deepest lake (Lead, changing dateline)

July 29th, 2008 - 8:00 pm ICT by IANS  

RIA Novosti
Irkutsk (Russia), July 29 (RIA Novosti) A team of Russian scientists descended to the bottom of Siberia’s Lake Baikal in two mini-submarines Tuesday, setting a new world record for a freshwater dive. News channel Vesti-24 said the submersibles, Mir-1 and Mir-2, reached a depth of 1,680 metres in the world’s deepest lake, which holds 20 percent of the planet’s fresh water.

The ongoing expedition in what locals call the ‘Sacred Sea’ was organized by Artur Chilingarov, a Russian lawmaker who led a symbolic dive to the North Pole seabed last August, during which a Russian flag was planted on the seabed.

Chilingarov earlier said the Mir dives were “a logical continuation of lake exploration that was begun 30 years ago with the Pisces apparatus”.

Soviet scientists in a Pisces submersible reached a depth of 1,410 metres in 1977, and examined the lake’s bed with searchlights.

The lake has since been the focus of numerous Soviet, post-Soviet Russian and international research expeditions.

Chilingarov said “major technical problems” have to be overcome in deep dives into the lake, due to “difficult weather conditions which dictate their own special conditions in fresh water”.

Baikal, whose age scientists estimate at 25 million years, is a Unesco World Heritage Site with hundreds of species of unique fauna and flora.

Crew member Natalia Komarova, the first woman to take part in a Mir mini-sub dive, told reporters that the results of the expedition would have an important impact on environmental legislation.

“We need to understand how to protect Baikal and use it without harming its unique ecosystem,” she said.

She said new safeguards would be needed to protect the lake, given the planned intensive economic and industrial development of East Siberia over the coming years.

The lake has been the focus of major environmental scare in recent years, with a last-minute change to an oil pipeline route that was set to pass near Baikal’s shores, and environmental regulators’ claims against a pulp mill accused of pumping large volumes of toxic waste into the lake.

The research team is camped on the lake’s Olkhon Island, where the mini-subs were delivered earlier in the day on barges.

The head of the local administration and the head of investment company Metropol, which has contributed $6 million to the expedition, watched the Mir submersibles descend into the water.

The expedition is set to run for two years, during which the scientists will conduct around 160 dives in various areas of the lake.

Research will include oil and gas prospecting, tectonic information-gathering, and exploration for archaeological artifacts.
RIA Novosti

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