Slocum glider

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Teledyne Webb Research's Slocum glider will be used at the Pioneer and Endurance Arrays. (Ben Allsup, Teledyne Webb Research)

Coastal Gliders

Gliders are autonomous underwater vehicles that use buoyancy propulsion to travel through the ocean gathering data on ocean physical, bio-optical, and chemical properties such as temperature, salinity, chlorophyll and dissolved oxygen. Their missions will last up to three months during which they will travel up to 1800 km. While employed, they will relay their data to shore via satellite telemetry.

Pioneer Array

An array of six gliders will survey the outer shelf and the slope waters in the Atlantic Ocean offshore of the moored Pioneer Array. Six cross-shore lines of ~150 km with 25-30 km spacing between lines will be simultaneously occupied within a 150 x 150 km “box”. The lines will be repeated at intervals of approximately 2 weeks and individual gliders will remain in the field for two months before being recovered for refurbishment. For use in the Pioneer Array, the gliders will carry a multi-disciplinary sensor payload, including bio-optical sensors with copper shutters for mitigation of biofouling. The gliders will routinely dive to within several meters of the sea floor or 1000 m depth, whichever is greater.

=>Pioneer Array core sensors

Endurance Array

An array of six gliders will survey the shelf and slope waters of the eastern boundary current regime offshore of Washington and Oregon, and provide high resolution transects along the Endurance mooring line. The gliders will carry a multi-disciplinary sensor payload, including bio-optical sensors with copper shutters for mitigation of biofouling. The gliders will operate along four cross-shelf lines at 43.5, 44.6, 47.0 and 48.0° N latitude, from approximately the 20 m isobath out to 128° W. The gliders will also run north-south along 126° W. The northernmost glider track will not enter the Canadian Exclusive Economic Zone (EEZ) but will allow some continuity with the VENUS (Victoria Experimental Network Under the Sea) and NEPTUNE Canada (NorthEast Pacific Time-Series Undersea Networked Experiments) arrays as well as Regional Scale Node, Global Scale Node, and NOAA assets. Repeat missions of several hundred kilometers will be run over a period of several months until the gliders are recovered for servicing and replacement. The purpose of these missions will be to characterize the mesoscale field, upwelling fronts, and buoyant plume fronts over the shelves and provide spatially rich data in which to embed the moored Endurance time series data.

=>Endurance Array core sensors

=>Regional Scale Node

=>Global Scale Node