During the 1783 Laki fissure eruption lava erupted from multiple vents and flowed towards the southern coast of Iceland. The total area covered by the flows was 599 km2 with a total magma volume of 14.7 km3. Advance of the lava flows occurred in surges during the summer of 1783. Observations of the location of lava flow fronts at various times allow for a reconstruction of lava flow advance as they moved towards the coast. In this part of the exercise you will use these observations to calculate the speed of the lava flows.                          
      Lava flow advancement      
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Determine the speeds of the Laki 1783 lava flows using a Flash module