UNDERWATER GLIDERS FOR OCEAN RESEARCH

Underwater gliders are autonomous vehicles that profile vertically by buoyancy control and move horizontally on wings. Gliders are reviewed, from their conception by Stommel as an extension of autonomous profiling floats, through their development in 3 models, and including their first deployments singly and in numbers. This paper discusses the basics of glider function as implemented by University of Washington, Seaglider, Scripps Institution of Oceanography, and Webb Research in Slocum. Preliminary results are presented from a recent demonstration project that used a network of gliders off Monterey. A wide range of sensors has already been deployed on gliders, with many under development, and a wider range of future possibilities. Glider networks appear to be among the best approaches to achieving subsurface spatial resolution necessary for ocean research.

[1]  R. Davis,et al.  The autonomous underwater glider "Spray" , 2001 .

[2]  T. Osborn,et al.  FINESTRUCTURE, MICROSTRUCTURE, AND THIN LAYERS , 1998 .

[3]  J. Bellingham,et al.  Autonomous Oceanographic Sampling Networks , 1993 .

[4]  Russ E. Davis,et al.  Autonomous Buoyancy-Driven Underwater Gliders , 2002 .

[5]  Russ E. Davis,et al.  AUTONOMOUS PROFILING FLOATS: WORKHORSE FOR BROAD-SCALE OCEAN OBSERVATIONS , 2004 .

[6]  Kenneth S. Johnson,et al.  In situ ultraviolet spectrophotometry for high resolution and long-term monitoring of nitrate, bromide and bisulfide in the ocean , 2002 .

[7]  Mark A Moline,et al.  Continuous hyperspectral absorption measurements of colored dissolved organic material in aquatic systems. , 2003, Applied optics.

[8]  Scott M. Gallager,et al.  Chemical and Biological Sensors for Time-Series Research: Current Status and New Directions , 2004 .

[9]  Mark A. Moline,et al.  The Long-term Ecosystem Observatory: an integrated coastal observatory , 2002 .

[10]  Daniel L. Rudnick,et al.  Measuring Upper Ocean Variability from an Array of Surface Moorings in the Subtropical Convergence Zone , 1990 .

[11]  James G. Bellingham,et al.  Performance metrics for oceanographic surveys with autonomous underwater vehicles , 2001 .

[12]  D. C. Webb,et al.  SLOCUM: an underwater glider propelled by environmental energy , 2001 .

[13]  H. Stommel.  The Slocum Mission , 1989 .

[14]  Russ E. Davis,et al.  The Autonomous Lagrangian Circulation Explorer (ALACE) , 1992 .

[15]  R. Pollard,et al.  Frontal surveys with a towed profiling conductivity /temperature/depth measurement package (SeaSoar) , 1986, Nature.