Iceberg

Iceberg detection1476284512_iceberg

To detect the presence of icebergs and predict their direction, CLS has developed a solution used to:

  • Detect iceberg populations produced by glaciers in the Antarctic using radar satellite observation data
  • Define risk zones
  • Model the direction of icebergs and their melt-rate according to currents and surface temperatures, wind levels and the shape and size of the iceberg
  • Readjust the direction model using observation data from radar satellites in the Subantartic zone (around 50° South). Perform (using these radar images) a correct display of icebergs of a significant size (>50m).

CLS is thus able to provide race organisers with maps of the Antarctic, with the location of iceberg populations and predictions concerning their drift direction:

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Each iceberg detected by satellite or in situ by Vendée Globe’s skippers is assigned a unique identifier. Then the iceberg is ingested in a model of drift and cast developed through the management of CLS space oceanography. Satellite detection of icebergs or in situ did not identify any icebergs. To compensate for this lack of information, the drift model can be used on many fictional icebergs generated along the ice. This allows for statistical information on the risk of encountering icebergs. Design drift and melting takes into account the currents, wind, sea state (surface anomalies, height of sea level), surface temperature and the shape and size of the iceberg. CLS is thus able to provide the Antarctic card race organizers with the location of populations of icebergs and predicting their drift. CLS thus accompanied the Vendée Globe race directors in its decision making.