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Ocean Observation, Climate Change and Disaster Warning: the Context. David Meldrum Consultant, IOC/UNESCO, Paris d.meldrum@unesco.org. Contents of presentation. Is climate changing? Ocean observing systems already in place Weather and climate Disaster warning

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ocean observation climate change and disaster warning the context

Ocean Observation, Climate Change and Disaster Warning: the Context

David Meldrum

Consultant, IOC/UNESCO, Paris

d.meldrum@unesco.org

contents of presentation
Contents of presentation
  • Is climate changing?
  • Ocean observing systems already in place
    • Weather and climate
    • Disaster warning
  • The challenges of the deep ocean
  • Opportunities for cable operators to make a difference
challenges of the deep ocean compared to space
Challenges of the deep ocean (compared to space)
  • Satellites can’t see below the sea surface
  • Instruments have to withstand high pressure and corrosion
  • No energy source (e.g. solar panels)
  • Difficult for communications and imaging
techniques for observing the deep ocean
Techniques for observing the deep ocean
  • Moorings
  • Landers
  • Lowered instruments
  • Acoustics
  • Cabled observatories
  • New oceanographers!
seismic activity
Seismic activity

Not all seismic activity causes tsunamis

cables offer a solution
Cables offer a solution
  • Vandal-proof in the deep ocean
  • Instantaneous communications
  • Energy source
  • Next generation commercial repeaters to include built-in tsunami sensors?
  • Why not other sensors as well?
    • Ocean properties such as temperature and salinity
    • Seismometry
    • Passive acoustics
conclusions
Conclusions
  • The deep ocean is poorly observed
  • Next generation cable repeaters could make a major impact
  • Important climate variables could be measured
  • Acoustic sensors would cast new light on marine mammals
  • Cables offer the ideal solution for tsunami warning
    • Vandal resistant
    • Instant communications
    • Energy available
    • Could be a business opportunity
    • Or why not just be green and eco-friendly and improve your image!
  • Suggestion: establish a small enthusiastic group to sketch out a limited pilot project
cables are the future
Cables are the future!

Thank you!

TAT-1, Oban, Scotland

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