Mystery of the Red Lake

SeaDiscovery.com
Friday, November 15, 2013

Set in a sheer-sided bowl of rock, accessible by climbing gear alone, the Red Lake in Croatia has never revealed the secret of its depths.

Now, mountaineering skills and a Saab Seaeye Falcon ROV will offer the first ever insight into the third largest sinkhole lake in the world.

Many attempts to survey the lake have failed, even thwarting an earlier team of underwater specialists. No one knows how deep it is, nor how it is fed, or if it is connected to other water systems.

A ray-finned fish, particular to the lake, sometimes appears in nearby waterways to give the only clue that an underwater connection might exist.

Solving the mystery became urgent when the level of the lake dropped 80 meters, and sent the Croatia Facility of Civil Engineering in search of answers.

They commissioned top Adriatic ROV and diving company, Neptun-Sub to undertake the daring task of sending down the Falcon ROV. Their mission was to discover the depth of the lake, create a 3D profile, and film the underwater surfaces. Lowering the Falcon down a 300 meter vertical cliff face needed the skills of mountaineers.

Their task was only made possible because the Falcon is small enough to be manhandled, yet powerful enough to perform precise work, carrying a wide range of sensors and tools such as high specification cameras and sonar systems as well as manipulators. It is packed with advanced technology usually found in much larger underwater vehicles.

Once the exploration team sent the Falcon diving, it discovered that the Red Lake – taking is name from iron oxide coloring of the rocks within which it sits – is in fact 255 meters deep, four meters of which are below sea level – and it is funnel-shaped.

The filming and 3D survey results, along with data collected by instruments left in the lake, are currently being evaluated by the Croatian Faculty of Civil Engineering, and will be published at a later date.

Maritime Reporter May 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

2 Americans Rescued North of Cuba

A Coast Guard MH-60 helicopter crew rescued two American sailors whose vessel ran aground approximately 25 miles north of Gibara, Cuba, Friday. Watchstanders

Shell CEO Backs Fossil Fuels, Climate Change Warnings

The world's fossil fuel reserves cannot be burned unless some way is found to capture their carbon emissions, Royal Dutch Shell Plc Chief Executive Officer Ben van Beurden said on Friday.

Severe Flooding Cuts Off Lone Road to Alaska's Oilfield

Alaska's lone road to North Slope oil field operations remains closed for the third time in two months while emergency crews continue to redirect flooding from an adjacent river,

News

Shell CEO Backs Fossil Fuels, Climate Change Warnings

The world's fossil fuel reserves cannot be burned unless some way is found to capture their carbon emissions, Royal Dutch Shell Plc Chief Executive Officer Ben van Beurden said on Friday.

Severe Flooding Cuts Off Lone Road to Alaska's Oilfield

Alaska's lone road to North Slope oil field operations remains closed for the third time in two months while emergency crews continue to redirect flooding from an adjacent river,

Pipeline Spill Could Hamper California Oil Projects

Hundreds of barrels of oil that gushed from a ruptured coastal pipeline in scenic California this week could stiffen opposition to large oil projects that companies want to build in the state,

Surveyors

Mobil Says Oil Discovery off Guyana is 'Significant'

Unlike almost all its neighbors, Guyana isn’t an oil producer yet. But the energy giant Exxon Mobil recently announced it had discovered “significant” oil off the coast.

Carrier Schedule Reliability Improves in April

Transport consultant Drewry’s Carrier Performance Insight (CPI) for April records 67.6%, up by 4.1 percentage improvement on the previous month in the aggregate

China Denies Kra Canal Deal

China has denied it is involved in work on the Kra canal, defusing hype over a project that purportedly lets ships bypass the Strait of Malacca and Singapore's port, reports Strait Times.

Ocean Observation

Miller is VP - Government and Political Affairs, NOIA

The National Ocean Industries Association (NOIA) has promoted Megan Bel Miller to Vice President for Government and Political Affairs. She will lead NOIA's Congressional

India-ASEAN Naval Cooperation On

The Indian Navy's indigenous offshore patrol vessel, INS Saryu, will participate in a week-long ASEAN Regional Forum (ARF) Disaster Relief Exercise (DiREx).   According to an official statement,

Volume Up in Dutch Maritime Technology Sector

The Dutch maritime technology sector has had a good year. Turnover increased by 17%, from EUR 6.4 billion in 2013 to EUR 7.5 billion in 2014. The sector employed 31,680 FTEs, up from 29,361 in 2013.

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Naval Architecture Navigation Offshore Oil Pipelines Ship Electronics Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.2749 sec (4 req/sec)