Figure 1.
Location of the project area and DGB sites.
Figure 2.
Laser phase scans using a Leica HDS of the DGB-1 and DGB-2 complexes (complements of Heinz Rüther and the Zamani Project).
Figure 3.
Observation point analysis of 2025 tiles showing the number of Actual DGB sites able to see each cell.
Figure 4.
Ripley’s K analysis of clustering of Actual DGB sites (top) and Random DGB-1 (bottom).
The blue line represents the predicted values, the red line represents the actual values analyzed and the dotted lines represent the 2-σ confidence envelope.
Figure 5.
Intervisibility lines generated using the “Line of Sight” tool in ArcGIS10.1 Spatial Analyst (vectors created using v.net.visibility in GRASS6.4) of Actual DGB and 10 permutations of Random DGB sites.
Figure 6.
Viewshed analysis in ArcGIS 10.1 of Actual DGB and 10 permutations of Random DGB sites.
Figure 7.
Comparison of the number of DGB sites (Actual, Random-1– Random-10) visible from 30-×-30-m grid cells within the study area.
Table 1.
Comparative analysis of numbers of DGB sites (Actual, Random-1-10) visible from 30-×-30-m grid cells within the study area.
Table 2.
Spearman’s-ρ ranked analysis comparing the average cumulative viewshed of cells from DGB Random-1–10 against individual values.
Figure 8.
Posterior means and standard deviations of α, β, and γ using a Bayesian logistical regression model to test the intervisibility DGB sites across 2025 tiles, each of which measures 20,375 m2.
Table 3.
Average and 1-σ calculations of elevation (m.a.s.l.) and slope (%) of Actual and Random DGB sites.