Table 2 Tephra thickness errors for the Fogo A deposit calculated using statistical methods and fieldwork
From: Quantifying uncertainties in the measurement of tephra fall thickness
Method | Average | Standard deviation |
|---|---|---|
5 Clusters | 53 | 3 |
10 Clusters | 33 | 3 |
20 Clusters | 28 | 3 |
Regression Fit | ||
All (Exponential) | 45 | 3 |
All (Power Law) | 44 | 3 |
Quadrant A | 30 | 3 |
37 | 3 | |
Quadrant B | 20 | 3 |
20 | 5 | |
Quadrant C | 28 | 3 |
36 | 3 | |
Quadrant D | 19 | 3 |
23 | 3 | |
Natural Variance | 28 | 2 |
Observational uncertainty | 9 | 3 |