The Group SIROCCO of the Observatoire Midi-Pyrenées of the University of Toulouse, CNRS, is continuing to carry out model calculations. The model is based on an ocean circulation and current weather conditions and they results showed an initial north-eastern transport of liquid releases from the damaged reactors and the contaminated water would reach the northern monitored stations between 1 and 2 weeks later.

A model with tracer release directly in the sea show an along shore propagation in the southern direction and a northeast propagation moving away from the coast. With tracer release from atmospheric deposition, the propagation stretch offshore entering the Kuro-Shivo current in few days.

The first results are shown in Fig. 3 and 4. The data are converted into Bq/L by assuming arbitrary discharge or aerial release activities, respectively. The results should just be taken as indication of the dilution capacity and transport route of sea water.

Click on charts for enlarged view.