Riverine drifter in Boston Harbor

Clearwater is pleased to announce the Riverine Drifter, a highly integrated, small, light-weight instrument designed for detailed surveys of currents and bathymetry in shallow environments. Riverine Drifter is a scaled down ClearSat-1 drifter instrumented with a Nortek Aquadopp modified with a fourth sensor for highly accurate bathymetric measurements, GPS location, 212 MB Compact Flash Card, and Iridium 9601 SBD modem. As it drifts with tidal currents, Riverine Drifter is able to take detailed profiles of 3-D current structure and depth all tied back to GPS time and geographic coordinates. Data excerpts can be relayed to the user via Iridium SBD. The entire data set is easily downloaded from the memory card. Sampling rates for Aquadopp and GPS can be as high as 1 Hz. Extensive field tests have been conducted in a variety of environments in Boston Harbor. Clearwater has shipped its first Riverine Drifters to Dr. Luca Centurioni at the Scripps Institution of Oceanography for use in studies of river discharge off the coasts of Southern California.