How Fast Do Gases from Volcanic Eruptions Travel?
ES0906  Sulfur Dioxide Animation

Mount Pinatubo's emissions of SO2 gas show up as a bright cloud in these images produced from TOMS data.

  !   Click the image to play the animation. Drag the slider back and forth to analyze what happened to the "cloud" of SO2 gas. Answer the questions below.

 
3. What happens to the size of the sulfur dioxide (SO2) cloud over time?

4. What happens to the concentration of SO2 over time?

5. Does the lack of a defined SO2 cloud on June 30 mean that the SO2 was no longer in the atmosphere? Explain your answer.

6. What information would you need to calculate the speed of the SO2 cloud?


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