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Spring 2010 Course : UPDATES: Research Projects: AUV Turbulence Measurements in the LOCO Field Experiments MerMADE: Merrimack River Mixing and Divergence Experiment Recent Manuscripts: Wang, Z. and L. Goodman, 2009, (in press). The evolution of a thin phytoplankton layer in strong turbulence. Continental Shelf Research. doi:10.1016/j.csr.2009.08.006 Goodman, L., Levine, E.R. and Wang, Z., 2009, (in review). Sub surface observations of surface waves from an autonomous underwater vehicle (AUV). IEEE Journal of Oceanic Engineering. Wang, Z. and Goodman, L., 2009, Evolution of the spatial structure of a thin phytoplankton layer into a turbulent field. Marine Ecology Progress Series. 374:57-74 Doi:10.3354/meps07738. Goodman, L. and Wang, Z, 2009, Turbulence
Observations in the Northern Bight of Monterey Bay from a Small AUV, Journal
Marine Systems, Volume 77, Goodman, L., Robinson, A.R.,;On the Theory of the Effects on Biological Dynamics in the Sea, III: The Role of Turbulence in Biological Physical Interactions, Proc Royal Soc., Proceedings A 464 (2091), Mar 08, 2008. Levine, E.R., Goodman, L., O'Donnell, J.,Turbulence in coastal fronts near the mouth of Long Island Sound,invited J. Mar.Syst., Spec. Iss., Processes in Ocean Fronts, in press (February 2008) MacDonald, D. G., L. Goodman, and R. D. Hetland (2007), Turbulent dissipation in a near-field river plume: A comparison of control volume and microstructure observations with a numerical model, J. Geophys. Res., 112. Goodman, L., Levine, E., Lueck, R., (2006) On measuring the terms of the turbulent kinetic energy budget from an AUV, J. Atoms. Ocean. Tech. 23, 977-990. |
About the Turbulence REMUS
SMAST Turbulence Remote Environmental Monitoring Unit (T-REMUS)
SMAST’s Turbulence REMUS (T-REMUS) is a modified version of Hydroid Inc. standard REMUS - a low cost, light weight, autonomous underwater vehicle which is designed to interface with a Windows laptop computer post-mission to download and subsequently analyze data. More complex than the standard REMUS, T-REMUS is designed to collect a variety of oceanographic data including pressure, temperature, salinity, bathymetry, water velocity, and shear. In addition to instantaneous pressure and temperature T-REMUS also measures their respective gradients.
The onboard navigation system uses Long Baseline (LBL), Ultra-Short Baseline (USBL) acoustic transducers, a Global Positioning System (GPS), bottom lock from an Acoustic Doppler Current Profiler (ADCP), and its internal compass to find its way autonomously (or without post-launch communication with the deployment team) from waypoint to waypoint. Successful navigation requires two transponders to be carefully positioned by GPS.
To gather data while the vehicle is under way, T-REMUS is equipped with a team of sensors: hotel sensor suite, a conductivity, temperature and depth appendage(CTD), an acoustic Doppler current profiler (ADCP), dual side mounted scanning sonar transducers (port and starboard), a shear, temperature, and acceleration probe module (UVSP), and a combination fluorometer/backscattering meter (BB2F). All hotel control data are sampled at 1 Hz. Critical to controlling the vehicle’s motion is pitch, roll, and yaw which are recorded on the hotel suite. Pitch, roll, and yaw are rotations about the y, x, and z axes respectively.
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