Southern Ocean

Location of the high latitude, Global Southern Ocean Array. Credit: OOI Regional Scale Nodes program and the Center for Environmental Visualization, University of Washington

(Click to enlarge) Location of the high latitude, Global Southern Ocean Array. Credit: OOI Regional Scale Nodes 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 Hybrid Profiler mooring with two wire-following profilers and one surface piercing profiler
  • Two subsurface Mesoscale Flanking Moorings with fixed sensors and acoustic communications to gliders
  • Three gliders with extended endurance and acoustic communications

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 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 Hybrid Profiler Mooring made up of two types of profilers: a surface piercing profiler operating from ~150 m to the surface, allowing satellite data telemetry, and two wire-following profilers, one operating from 310 m to 2,445 m and the other 2,470 m to 4,605 m. Two additional subsurface Mesoscale Flanking Moorings will be deployed to form a triangular array ~50 km on a side. These Flanking Moorings have their uppermost flotation at ~30 m depth and instruments at discrete depths along the mooring line. Gliders will be equipped with acoustic modems to relay data from the Mesoscale Flanking Moorings to shore via satellite telemetry and will sample within and around the triangular array. 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) Surface Mooring
(B) Hybrid Profiler Mooring
(C, D) Flanking Moorings
Mobile Assets – Gliders

Technical Drawings

» Click here for the online Technical Data Package

Click the below links for High-Level Technical Drawings

(A) Surface Mooring
(B) Hybrid Profiler Mooring
(C, D) Flanking Mooring


 

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