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Using Manned Submersibles to Explore The Oldest and Deepest Lake in the World
In May 2008, two deep-diving manned submersibles, MIR-1 and MIR-2, were transported from Kaliningrad, Russia, to....
Conducting a Multibeam Survey At a Gulf of Mexico Excavation Site
Excavation sites on land are often a beehive of activity, with excavators, bulldozers and....
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AUVs for Depth and Distance: Autosub6000 and Autosub Long Range
The Autosub6000 and Autosub Long Range are the two latest AUVs designed, built and...
ROV Backbone For Rapid Development Of Underwater Robotic Systems
Robotic underwater intervention covers a deceptively wide range of technologies, including...
Headlines
December 2011 Issue
DIVING, UNDERWATER
VEHICLES & IMAGING
COVER
Scientific diver Jeff Godfrey of the University of Connecticut explores a wave-cut terrace associated with the Pleistocene ice age in the Exumas region of the Bahamas at a depth of 85 meters seawater. The Bahamas is lined with these vertical wall habitats extending from the shallows to the abyss, providing a full spectrum of depths for scientific investigation. The dive team utilizes mixed-gas, closed-circuit rebreathers to enable efficient access to these mesophotic coral ecosystems from 60 to 150 meters seawater, beyond the reach of conventional scuba. (Photo by Michael Lombardi, courtesy National Geographic Society/Waitt Grants Program).
FEATURE ARTICLES
USING MANNED SUBMERSIBLES TO EXPLORE THE OLDEST AND DEEPEST LAKE IN THE WORLD
Dr. Anatoly M. Sagalevich (P.P. Shirshov Institute of Oceanology) highlights the results from 176 dives that took place over three consecutive summers in Lake Baikal using the MIR-1 and MIR-2 manned submersibles.
CONDUCTING A MULTIBEAM SURVEY AT A GULF OF MEXICO EXCAVATION SITE
Dixie Poché (Fugro Chance Inc.) details the design and operation of a rotary-mounted multibeam sonar system that was used on a static vessel to monitor the progress of an excavation around the legs of a 500-foot-tall structure.
REDEFINING ‘DEPTH PERCEPTION’ FOR SCIENTIFIC DIVING STANDARDS
Michael Lombardi (University of Rhode Island) outlines a four-phased approach to scientific diving that has allowed a two-man core diving team working on a mesophotic coral ecosystem in the Bahamas to break the perceived 90-meter benchmark.
AUVS FOR DEPTH AND DISTANCE: AUTOSUB6000 AND AUTOSUB LONG RANGE
Gwyn Griffiths and Stephen D. McPhail (The National Oceanography Centre) describe the design, construction and performance of two different AUVs that provide deep-diving and long-duration capabilities.
ROV BACKBONE FOR RAPID DEPLOYMENT OF UNDERWATER ROBOTIC SYSTEMS
Matthew Cook (SeaView Systems Inc.) shares case studies of a modular ROV control system that allows operators to take on multiple projects with minimal asset redundancy and costs.
UNDERWATER INTERVENTION 2012
—Conference Preview
OCEANS’11 MTS/IEEE CONFERENCE AND EXHIBITION
—Conference Review
BRINGING LABORATORY SALINOMETRY TO MODERN STANDARDS
Gereon Th. Budéus (Alfred Wegener Institute for Polar and Marine Research) explains the operation and design of a precision salinometer that automates sample processing and can maintain accuracy in variable environments.
DEPARTMENTS
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Annual Review and Forecast issue.
