Coastal Profiler Moorings

Pioneer Array wire-following profiler mooring.

Pioneer Array wire-following profiler mooring.

Coastal Wire-Following Profiler Moorings

The Coastal Wire-Following Profiler Moorings are used in the Coastal Arrays -- the Pioneer Array in the Atlantic and at the offshore site for the Endurance Array's Washington Line in the Pacific. The mooring supports instruments in the profiling body and can support a frame mounted, upward-looking acoustic Doppler current profiler (ADCP) at the bottom. The Coastal Wire-Following Profiler Moorings are of conventional design from the anchor to the subsurface flotation sphere, but also include a surface expression.

An electromechanical (EM) stretch hose connects a small Submersible Surface Buoy to the subsurface flotation sphere, providing compliance in the upper 15-20 m of the mooring (to accommodate tidal excursions and wave motion) while allowing the flotation sphere to maintain vertical tension in the wire-rope portion of the mooring on which the profiler rides.

The wire-following profiler translates all but the upper and lower 20 m of the water column. Both the profiler and ADCP transmit data using inductive modems over the jacketed steel cable with seawater return, through conductors in the flotation sphere and stretch hose, to a receiver in the surface buoy.

Learn more about

» Pioneer Array

Pioneer Array surface-piercing profiler mooring.

Coastal Surface-Piercing Profiler Mooring

Coastal Surface-Piercing Profiler (CSPP) Moorings are used at the Coastal Arrays -- the Pioneer Array in the Atlantic and the Endurance Array in the Pacific.

The CSPP is anchored by a convention mooring anchor with recovery line pack and back-up flotation.  The CSPP itself sits at 100 m depth (or ~11 m above the seafloor at shallower sites).  The profiler body contains instrumentation, telemetry components, and a winch to enable it to make measures through the water column up to and through air-sea interface.  Once on the surface it can telemeter data to shore and receive new commands.