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Del Mar Oceanographic WIREWALKER™

Vertical Profiling - Powered by Ocean Waves

The Wirewalker is a rapid vertically-profiling instrument platform propelled by ocean waves which accepts a large range of sensor payloads.

  • Del Mar Oceanographic WIREWALKER™
Del Mar Oceanographic
10457 Roselle St, Suite A
92121 San Diego, CA
United States

Description

Del Mar Oceanographic produces the Wirewalker, a vertically profiling instrument-platform powered by ocean waves. Through the Wirewalkers rapid profiling and ability to integrate a wide variety of sensor payloads, it brings new life to typical one-dimensional sensor time-series as a 2-D depth-time image where an enormous increase in information and intuition is achieved. Attached to a free-drifting or moored buoy, the Wirewalker ratchets downward along a suspension wire under wave power. At a predetermined depth (up to ~1000 m), the ratchet releases. The profiler then ascends at its terminal velocity (~0.5 m/s), completely decoupled from sea-surface motion. A very clean data record is obtained to within 1 meter of the sea surface. Typical round trip profiling speeds are 10 meters/minute.  Contact us to learn more; we'd love to assist you in radically increasing your information content and enhancing your observations.  

[email protected]

delmarocean.com

Specifications

  • Type
    Drifting buoy, Moored buoy
  • Year of last update
    2020
  • Year of introduction
    2001
  • Length [m]
    152.5
  • Width [m]
    66
  • Hull material
    Buoy hull is foam
  • Structure Material
    Profiler is plastic
  • Ballast
    20kg suspended weights
  • Battery
    Profiling is powered by waves. No Batteries.
  • Battery type
    External power for sensor operation is available. Alkaline/Lithium.
  • Solar panels
    No
  • Solar panels description
    No Solar panels on the standard buoy.
  • Water depth
    No
  • Water temperature
    Yes, optional
  • Water salinity
    Yes, optional
  • Water turbidity
    optional
  • Chromophoric dissolved organic matter (CDOM)
    optional
  • Nitrate
    optional
  • Dissolved oxygen
    optional
  • Chlorophyll
    optional
  • Underwater radiance
    optional
  • Sound Velocity
    optional
  • Max. depth rating of sensors
    1000m
  • Other sensors or additional information
    The Wirewalker platform itself is 100% mechanical (no electronics/sensors). However, it's possible to integrate an applications specific suite of sensors as a payload.
  • Wave frequency
    No
  • Wave height
    No
  • Wave period
    No
  • Wave direction
    N
  • Current speed
    Yes
  • Current direction
    Yes
  • GPS sensor
    Y
  • GPS description
    Iridium Beacon and clamps included
  • Navigation lights
    Yes
  • Navigation lights description
    Solar powered flasher included
  • Radar reflector
    optional
  • Data logger description
    The Wirewalker can accommodate a large range of underwater sensors and various payloads.
  • Web based control and tracking
    No
  • Acoustic communication
    No
  • Iridium/Satellite communication
    optional
  • Cellular comunication
    optional
  • UHF/VHF communication
    No
  • Other sensors or additional information
    It's possible for a sensor suite to communicate with a topside telemetry system via an inductive modem
  • Type of mission planning software
    Integrated sensor dependent
  • Air temperature
    No
  • Air humidity
    No
  • Barometric pressure
    No
  • Wind speed
    No
  • Wind direction
    No
  • Solar radiation
    No
  • Other sensors or additional information
    No atmospheric variables are standard on the buoy.
  • Deployment methods
    Free-Drifting or moored in place
  • Min deployment depth [m]
    5
  • Max deployment depth [m]
    1000
  • Anti-fouling systems
    Sensor dependent
  • Max operating time
    Sensor dependent
  • Training facilities
  • Main applications
    Oceanography, CTD/density/soundspeed profiling, turbulence and ocean mixing, air-sea interactions, biogeochem, tactical oceanography, aquaculture, plume monitoring
  • Distinguishable features:
    The Wirewalker uses only wave power to propel itself vertically though the water column. All on board power goes to the sensors. The ascent smooth and decoupled from the mooring wire.

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