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rockfall SilvaProtect | |||||||||
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n/a | inside perimeter | outside perimeter | total | ||||||
economic region | area of largest gap (aerial photo, 5 classes) | % | ± | % | ± | % | ± | % | ± |
Western Jura | no gap | 38.6 | 2.7 | 24.9 | 15.3 | 38.6 | 5.3 | 38.3 | 2.4 |
small gap | 36.2 | 2.6 | 25.4 | 15.5 | 39.7 | 5.4 | 36.7 | 2.3 | |
medium gap | 12.2 | 1.8 | 24.9 | 15.3 | 9.6 | 3.2 | 11.9 | 1.6 | |
large gap | 12.5 | 1.8 | 24.9 | 15.3 | 12.0 | 3.6 | 12.6 | 1.6 | |
very large gap | 0.6 | 0.4 | . | 0.0 | . | 0.0 | 0.5 | 0.3 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Eastern Jura | no gap | 49.0 | 4.8 | . | 0.0 | 53.8 | 13.9 | 49.1 | 4.5 |
small gap | 34.3 | 4.6 | . | 0.0 | 30.8 | 12.8 | 33.6 | 4.3 | |
medium gap | 5.6 | 2.2 | 100.0 | . | 15.4 | 10.0 | 7.4 | 2.4 | |
large gap | 10.2 | 2.9 | . | 0.0 | . | 0.0 | 9.0 | 2.6 | |
very large gap | 0.9 | 0.9 | . | 0.0 | . | 0.0 | 0.8 | 0.8 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Western Plateau | no gap | 34.8 | 4.6 | . | 0.0 | 25.3 | 12.7 | 33.8 | 4.4 |
small gap | 34.9 | 4.6 | . | 0.0 | 66.3 | 13.7 | 38.1 | 4.5 | |
medium gap | 12.3 | 3.2 | . | 0.0 | . | 0.0 | 11.1 | 2.9 | |
large gap | 15.2 | 3.5 | . | 0.0 | 8.4 | 8.1 | 14.5 | 3.3 | |
very large gap | 2.8 | 1.6 | . | 0.0 | . | 0.0 | 2.6 | 1.5 | |
total | 100.0 | . | . | 0.0 | 100.0 | . | 100.0 | . | |
Central Plateau | no gap | 32.3 | 3.3 | . | 0.0 | 33.3 | 10.3 | 32.2 | 3.2 |
small gap | 39.2 | 3.5 | 100.0 | . | 52.4 | 10.9 | 40.7 | 3.3 | |
medium gap | 17.0 | 2.7 | . | 0.0 | 4.8 | 4.7 | 15.8 | 2.5 | |
large gap | 9.0 | 2.0 | . | 0.0 | 9.5 | 6.4 | 9.0 | 1.9 | |
very large gap | 2.5 | 1.1 | . | 0.0 | . | 0.0 | 2.3 | 1.0 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Eastern Plateau | no gap | 35.5 | 2.8 | . | 0.0 | 41.2 | 11.9 | 35.8 | 2.7 |
small gap | 40.2 | 2.9 | . | 0.0 | 41.2 | 11.9 | 40.3 | 2.8 | |
medium gap | 11.8 | 1.9 | . | 0.0 | 11.8 | 7.8 | 11.8 | 1.8 | |
large gap | 11.5 | 1.9 | . | 0.0 | 5.9 | 5.7 | 11.2 | 1.8 | |
very large gap | 1.0 | 0.6 | . | 0.0 | . | 0.0 | 1.0 | 0.6 | |
total | 100.0 | . | . | 0.0 | 100.0 | . | 100.0 | . | |
Western Pre-Alps | no gap | 28.4 | 6.4 | . | 0.0 | 19.7 | 4.7 | 23.0 | 3.8 |
small gap | 22.5 | 6.0 | . | 0.0 | 26.8 | 5.3 | 24.9 | 3.9 | |
medium gap | 26.6 | 6.3 | 100.0 | . | 32.5 | 5.6 | 30.7 | 4.2 | |
large gap | 22.5 | 6.0 | . | 0.0 | 21.0 | 4.8 | 21.5 | 3.7 | |
very large gap | . | 0.0 | . | 0.0 | . | 0.0 | . | 0.0 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Central Pre-Alps | no gap | 19.0 | 3.3 | 25.0 | 21.7 | 19.0 | 3.5 | 19.1 | 2.4 |
small gap | 33.8 | 4.0 | 25.0 | 21.7 | 40.5 | 4.4 | 36.8 | 2.9 | |
medium gap | 21.1 | 3.4 | 25.0 | 21.7 | 16.7 | 3.3 | 19.1 | 2.4 | |
large gap | 26.1 | 3.7 | 25.0 | 21.7 | 23.0 | 3.8 | 24.6 | 2.6 | |
very large gap | . | 0.0 | . | 0.0 | 0.8 | 0.8 | 0.4 | 0.4 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Eastern Pre-Alps | no gap | 34.8 | 5.0 | 33.3 | 27.3 | 36.0 | 4.6 | 35.4 | 3.3 |
small gap | 31.5 | 4.8 | 33.3 | 27.3 | 32.4 | 4.5 | 32.0 | 3.3 | |
medium gap | 13.0 | 3.5 | 33.3 | 27.3 | 14.4 | 3.3 | 14.1 | 2.4 | |
large gap | 19.6 | 4.1 | . | 0.0 | 16.2 | 3.5 | 17.5 | 2.7 | |
very large gap | 1.1 | 1.1 | . | 0.0 | 0.9 | 0.9 | 1.0 | 0.7 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Northwestern Alps | no gap | 22.6 | 5.3 | 69.2 | 12.8 | 18.6 | 4.0 | 23.9 | 3.3 |
small gap | 35.4 | 6.1 | 7.7 | 7.4 | 33.0 | 4.8 | 32.0 | 3.6 | |
medium gap | 21.0 | 5.2 | 7.7 | 7.4 | 17.5 | 3.9 | 18.0 | 2.9 | |
large gap | 21.0 | 5.2 | 15.4 | 10.0 | 27.8 | 4.6 | 24.4 | 3.3 | |
very large gap | . | 0.0 | . | 0.0 | 3.1 | 1.8 | 1.7 | 1.0 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Central Alps | no gap | 18.4 | 6.3 | 36.4 | 14.6 | 34.7 | 8.9 | 27.0 | 5.1 |
small gap | 20.8 | 6.6 | 27.3 | 13.5 | 17.2 | 7.0 | 20.4 | 4.6 | |
medium gap | 10.6 | 5.0 | . | 0.0 | 30.9 | 8.6 | 16.7 | 4.2 | |
large gap | 50.1 | 8.1 | 27.3 | 13.5 | 17.2 | 7.0 | 34.7 | 5.4 | |
very large gap | . | 0.0 | 9.1 | 8.7 | . | 0.0 | 1.3 | 1.3 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Northeastern Alps | no gap | 18.5 | 7.5 | 33.3 | 15.8 | 22.7 | 5.8 | 22.5 | 4.4 |
small gap | 18.5 | 7.5 | 44.4 | 16.6 | 34.0 | 6.5 | 30.3 | 4.9 | |
medium gap | 33.3 | 9.1 | 11.1 | 10.5 | 9.4 | 4.0 | 16.8 | 4.0 | |
large gap | 29.6 | 8.8 | 11.1 | 10.5 | 30.2 | 6.3 | 28.1 | 4.8 | |
very large gap | . | 0.0 | . | 0.0 | 3.8 | 2.6 | 2.2 | 1.6 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Southwestern Alps | no gap | 12.5 | 3.5 | 12.5 | 6.7 | 16.6 | 2.6 | 15.1 | 2.0 |
small gap | 25.8 | 4.6 | 24.9 | 8.8 | 31.2 | 3.2 | 29.2 | 2.6 | |
medium gap | 25.8 | 4.6 | 24.9 | 8.8 | 21.0 | 2.8 | 22.6 | 2.3 | |
large gap | 34.8 | 5.1 | 37.7 | 9.9 | 29.3 | 3.2 | 31.5 | 2.6 | |
very large gap | 1.1 | 1.1 | . | 0.0 | 2.0 | 1.0 | 1.6 | 0.7 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Southeastern Alps | no gap | 13.1 | 2.5 | 33.3 | 15.7 | 11.6 | 2.2 | 12.8 | 1.7 |
small gap | 25.8 | 3.2 | 22.2 | 13.9 | 25.6 | 3.0 | 25.6 | 2.2 | |
medium gap | 23.2 | 3.1 | 22.2 | 13.9 | 25.1 | 3.0 | 24.2 | 2.1 | |
large gap | 36.8 | 3.6 | 22.2 | 13.9 | 34.8 | 3.3 | 35.4 | 2.4 | |
very large gap | 1.1 | 0.8 | . | 0.0 | 2.9 | 1.2 | 2.0 | 0.7 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Southern Alps | no gap | 29.8 | 4.9 | 31.2 | 8.2 | 29.3 | 2.7 | 29.6 | 2.3 |
small gap | 20.8 | 4.4 | 28.1 | 7.9 | 36.5 | 2.8 | 32.6 | 2.3 | |
medium gap | 18.5 | 4.2 | 15.6 | 6.4 | 13.7 | 2.0 | 14.8 | 1.8 | |
large gap | 30.9 | 5.0 | 25.1 | 7.7 | 19.8 | 2.3 | 22.5 | 2.1 | |
very large gap | . | 0.0 | . | 0.0 | 0.7 | 0.5 | 0.5 | 0.3 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . | |
Switzerland | no gap | 30.4 | 1.1 | 31.1 | 4.3 | 23.8 | 1.2 | 27.8 | 0.8 |
small gap | 33.3 | 1.1 | 25.8 | 4.1 | 33.5 | 1.3 | 33.1 | 0.8 | |
medium gap | 15.9 | 0.9 | 18.2 | 3.6 | 17.9 | 1.0 | 16.8 | 0.6 | |
large gap | 19.4 | 0.9 | 24.1 | 4.0 | 23.4 | 1.2 | 21.2 | 0.7 | |
very large gap | 1.0 | 0.2 | 0.8 | 0.8 | 1.4 | 0.3 | 1.2 | 0.2 | |
total | 100.0 | . | 100.0 | . | 100.0 | . | 100.0 | . |
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