Trawl-safe profiler development at SACLANT Centre for shallow waterenvironmental assessment and real time modeling
Tyce, R.
de Strobel, F.
Grandi, V.
Gualdesi, L.
SACLANT Undersea Res. Centre, La Spezia;
This paper appears in: OCEANS 2000 MTS/IEEE Conference and Exhibition
Publication Date: 2000
Volume: 1,
On page(s): 99-104 vol.1
Meeting Date: 09/11/2000 - 09/14/2000
Location: Providence, RI, USA
ISBN: 0-7803-6551-8
References Cited: 11
INSPEC Accession Number: 6831995
Digital Object Identifier: 10.1109/OCEANS.2000.881240
Posted online: 2002-08-06 23:38:52.0
Abstract
A Shallow-water Environmental Profiler in Trawl-safe, Real-time
configuration (SEPTR) has been developed by SACLANT Undersea Research
Centre in support of oceanographic modeling and rapid environment
assessment programs. It is being deployed operationally for the first
time during September 2000 as part of real-time multi-scale
oceanographic modeling experiments in the Ligurian Sea. The SEPTR system
combines the best capabilities of the Barny Sentinel ADCP bottom
platform and the SWEEP water column profiler developments at SACLANT
Centre. It is intended for 3-6 month deployments in areas where water
column instruments are at risk from fishing trawlers, but with real-time
data return and control via two-way cellular or satellite communication.
SEPTR includes a micro-controller based bottom platform which houses an
Acoustic Doppler Current Profiler (ADCP), wave/tide gage, ambient noise
sensor array, and water column profiler buoy system. The profiler buoy
system has an independent microcontroller with its own sensor suite.
Communications and battery recharge from the bottom platform are
supplied through the 2 mm diameter cable. The profiler requests winch
operations from the bottom electronics for autonomous vertical profiling
of CTD and optical properties of the water column in depths down to 100
m. Cable and profiler drag permit profiling with currents up to 2 knots
at 50 m depth and 1 knot at 100 m depth. The profiler buoy includes DGPS
navigation capability along with two-way communication capability while
on the surface. It also includes acceleration and magnetic field sensors
capable of surface wave buoy measurements
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