Regional Scale Nodes

Credit: OOI Regional Scale Nodes program and the Center for Environmental Visualization, University of Washington (Disclaimer: Graphics are conceptual designs and are not yet finalized. All data are subject to revision without notice.)

(Click to enlarge) Credit: OOI Regional Scale Nodes program and the Center for Environmental Visualization, University of Washington (Disclaimer: Graphics are conceptual designs and are not yet finalized. All data are subject to revision without notice.)

Description

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

Locations and Sampling:

Southern Hydrate Ridge & Slope Base

  • Location: 45°N, 125°W
  • Approximate Water Depth: 807 to 2909 m

Axial Summit & Axial Base

  • Location: 46°N, 130°W
  • Approximate Water Depth: 1516 to 2654 m

Primary Infrastructure:

  • A Shore Station in Pacific City, Oregon
  • ~ 900 km of high power (8kW) and high bandwidth (10 GbE) modified telecommunications cable
  • Seven subsea terminals called Primary Nodes to distribute power from the Shore Station to key sites along the Juan de Fuca Plate

Secondary Infrastructure:

  • 17 Medium-Power and Low-Power Junction Boxes (J-Box)
  •  3 cabled water column sites (PN1A, PN1C and PN3A) each hosting two paired instrumented moorings (a deep profiling mooring from approximately 3000 m to 200 m and a shallow profiling mooring, hosting a platform at 200 m and a winched profiler from 200 m to near sea surface). One paired mooring (PN1C) is shared with the Endurance Oregon Line
  • 100 water column and seafloor sensors deployed near the base of each mooring and at Southern Hydrate Ridge and Axial Seamount
  •  61 km (29 km buried) of extension cables providing power and communications to secondary infrastructure and sensors

Station Summary

The RSN provides unprecedented power (10 kV, 8 kW) and bandwidth (10 GbE) to scientific sensor arrays on the seafloor and throughout the water column. Water column sensors are deployed on moorings with instrumented wire-following profilers, 200-m instrumented platforms, and winched profilers. A shore station in Pacific City, Oregon includes two cable landings serving key sites on the RSN: Slope Base, Southern Hydrate Ridge, Axial Summit, Axial Base, and the Endurance Array – Oregon Line. The ~ 900 km of modified telecommunications cable (installed in 2012) provides high power and bandwidth to seven Primary Nodes: PN1A (Slope Base), PN1B (Southern Hydrate Ridge), PN3A (Axial Base), PN3B (Axial Summit), and PN5A (Mid-Plate). The last two primary nodes, PN1C and PN1D, extend from Southern Hydrate Ridge and are part of the Coastal Scale Nodes (CSN) Endurance Oregon Line. The Primary Nodes convert the high power voltage (10 kV) of the primary cable to a lower (375 V) level and distributes it to Science Ports along with communications and timing signals.

Regional Scale Nodes Deployment Schedule

OOI Planned Installation Schedule

Detailed Infrastructure Tables

» Click to download a PDF of all Infrastructure Tables

Axial Summit (PN3B)

MJ03B – Ashes
MJ03C – International District 1
MJ03D – International District 2
MJ03E – Eastern Caldera
MJ03F – Central Caldera

Axial Base (PN3A)

MJ03A – Axial Base Medium-Power J-Box
LV03A – Axial Base Mooring – Shallow Profiler & 200 m Platform
LV03A – Axial Base Mooring – Deep Profiler
LJ03A – Axial Base Mooring – Seafloor Instruments

Southern Hydrate Ridge (PN1B)

LJ01B – Southern Hydrate Ridge – Summit 1
MJ01B – Southern Hydrate Ridge – Summit 2

Slope Base (PN1A)

MJ01A – Slope Base Medium-Power J-Box
LV01A – Slope Base Mooring – Shallow Profiler & 200 m Platform
LV01A – Slope Base Mooring – Deep Profiler
LJ01A – Slope Base Mooring – Seafloor Instruments

Acronyms:

PN = Primary Node
LV = Low Voltage Node
MJ = Medium Power J-Box
LJ = Low Voltage J-Box

Technical Details

» Click here for the online Technical Data Package
» Click here for Cabled Technology Descriptions

Click the below links for High-Level Infrastructure Graphics:

Primary Infrastructure
Secondary Infrastructure
Cabled Moorings
Slope Base Mooring & Endurance Array

**All graphics courtesy of the OOI Regional Scale Nodes program and the Center for Environmental Visualization, University of Washington (Disclaimer: Graphics are conceptual designs and are not yet finalized. All data are subject to revision without notice.)

All graphics courtesy of the OOI Regional Scale Nodes program and the Center for Environmental Visualization, University of Washington (Disclaimer: Graphics are conceptual designs and are not yet finalized. All data are subject to revision without notice.)

 

 

 

 

 

All graphics courtesy of the OOI Regional Scale Nodes program and the Center for Environmental Visualization, University of Washington (Disclaimer: Graphics are conceptual designs and are not yet finalized. All data are subject to revision without notice.)All graphics courtesy of the OOI Regional Scale Nodes program and the Center for Environmental Visualization, University of Washington (Disclaimer: Graphics are conceptual designs and are not yet finalized. All data are subject to revision without notice.)

All graphics courtesy of the OOI Regional Scale Nodes program and the Center for Environmental Visualization, University of Washington (Disclaimer: Graphics are conceptual designs and are not yet finalized. All data are subject to revision without notice.)


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