Figure 2
From: Quantifying uncertainties in the measurement of tephra fall thickness
Dirichlet tessellation results for the Fogo A deposit. A. The territory that each thickness measurement represents. For the outer measurements, only the subaerial area is considered. There is a clear clustering of measurements particularly at medial distances. B. Area encompassed by individual cells versus distance from source. The data shows a large amount of area size scatter at all distances from source, reflecting big spatial sampling density variations.