SUBOCEAN | Linksium
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Transferred licenses

Real-time & 3D measurement of dissolved gases

profilePhoto   Christine Melay
Linksium Contact Christine Melay +33 (0)6 21 77 19 90
Water senow


  • Real time data
  • Rapid decision making
  • Resistance to high pressures
  • 4D Profiling

Key words

  • Dissolved gases
  • Methane sensor
  • Pipe-line

Intellectual Property

  • 1 patent


  • LGGE


  • CNRS
  • UGA

Linksium Continuum

  • Maturation
  • Commercialization


  • Transferred licenses


Subocean is a new generation of dissolved gas sensor. Precise measurements with ultra-fast response time are the result of an innovative method of gas extraction using membranes. OFCEAS laser spectrometry allows in-situ measurement of multiple gas concentrations and isotope ratios down to the ocean floor. The data provided in real time allows instantaneous interpretation and high-resolution profiling.


  • Laser spectrometer technology
  • Unique membrane gas extraction system
  • Battery or cable power supply
  • Real-time communication for data visualization
  • Works in deep water
  • Analysis of methane, carbon dioxide, isotopes, multi-gas


  • Easy to install and deploy
  • Immediate overview enables decisions to be made in situ
  • High resolution allows measurements from low gas concentrations
  • Possibility of integrating laboratory equipment for discrete analyses
  • Possibility of integration on an AUV or ROV
  • Continuous 3D profiling

State of progress

Demonstrator used in the Svalbard Arctic Ocean with excellent detection results.


  • Oil and gas: Prospecting new areas, offshore leak detection, methane hydrate studies
  • Environmental monitoring: geochemical characterization of the origin of hydrocarbons, study of oil pollution in a groundwater table, monitoring of dissolved gases
  • Industry: study of industrial processes of treatment or chemical reaction involving living matter
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