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Research
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plan 2003-06
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Crown of Thorns Starfish
on the Great Barrier Reef
Animation of
COTS outbreaks
1985-200 7
This animation was created by the AIMS Long Term Monitoring Project.
Data was collected using using the
manta tow method
at various reefs.
These data were interpolated using ArcInfo's IDW (Inverse Distance Weight)
function to create a grid for each year. The interpolation used a fixed radius
of 1 degree. Any cell in the grid which contained less than three points was
assigned a no data value. No data cells were then assigned the average of the
preceding and following years if these were available. If one of these was not
available, the cell was assigned the value of the other year.
The Long Term Monitoring Team would like to thank John Guinotte for his help with the interpolation.
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