Southern Ocean

Location of the high latitude, Global Southern Ocean Array. (Credit: OOI Cabled Array program and the Center for Environmental Visualization, University of Washington)

(Click to enlarge) Location of the high latitude, Global Southern Ocean Array. (Credit: OOI Cabled Array program and the Center for Environmental Visualization, University of Washington)

Description

Disclaimer: All data are subject to revision without notice; exact locations of mooring sites are not yet finalized; exact depths of sensors will be determined at the time of deployment.

Location and Sampling

Location:  

  • 55°S, 90°W

Approximate Water Depth:  

  • 4,800 meters

Glider sampling area (approximate):  

  • Within/between the triangular mooring configuration with sides ~50 km long.

Description of Infrastructure

  • One Global Surface Mooring, with battery, wind and solar powered buoy and satellite telemetry
  • One Global Profiler mooring with two wire-following profilers
  • Two Flanking Moorings with fixed sensors and acoustic communications to gliders.
  • Three Open-Ocean Gliders with extended endurance and acoustic communications that fly within and between the mooring array
  • Two Profiling Open-Ocean gliders that sample the upper water column near the Global Profiler Mooring

Station Summary

The global component of the OOI design includes a network of moorings at critical, yet under sampled, high-latitude locations such as within the Southern Ocean, southwest of Chile. Moorings located in the Southern Ocean will support sensors for measurement of air-sea fluxes of heat, moisture and momentum, and physical, biological and chemical properties throughout the water column. The array will have a combination of fixed platforms (moorings) with moored profilers to address the requirement to sample the full water column and mobile platforms (gliders) that will provide simultaneous spatial and temporal sampling capabilities. The array will have a combination of fixed platforms (moorings) with moored profilers to address the requirement to sample the full water column and mobile platforms (gliders) that will provide simultaneous spatial and temporal sampling capabilities. The array will be composed of a Surface Mooring containing fixed instruments situated on the buoy and through the top 1500 m of the water column. A subsurface Global Profiler Mooring made up of two wire-following profilers, one operating from 310 m to 2,445 m and the other 2,470 m to 4,605 m. Two Flanking Moorings will be deployed to form a triangular array ~50 km on a side. These Moorings have their uppermost flotation at ~30 m depth and instruments at discrete depths along the mooring line. Open-Ocean Gliders will be equipped with acoustic modems to relay data from the Flanking Moorings to shore via satellite telemetry. Some gliders will sample within and around the triangular array, while others will sample the upper water column near the Global Profiler Mooring. These gliders will carry sensor suites (see below) with the capability to alter sampling rates during a mission.

Southern OceanSouthern Ocean Deployment Schedule

OOI Planned Installation Schedule

Detailed Infrastructure Tables

» Click to download a PDF of all Infrastructure Tables

Click the below links for individual Instrument Tables

(A) Global Surface Mooring
(B) Global Profiler Mooring
(C) Flanking Moorings (2)
Mobile Assets – Open-Ocean & Profiling Gliders

Technical Drawings

» Click here for the online Technical Data Package

Click the below links for High-Level Technical Drawings

(A) Global Surface Mooring
(B) Global Profiler Mooring
(C) Flanking Mooring


 

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