Landslides - Extreme Events: A Physical Reconstruction and Risk Assessment - page 190

8
6
4
2
0

1830 1850 1870 1890 1910 1930 1950 1970 1990

Years

8
6
4
2
0

1830 1850 1870 1890 1910 1930 1950 1970 1990

Years

Figure 7.6. Growth curves for disturbed trees in northern Calibria, Italy. Strong
suppression of tree-ring growth is evident after landslide events in AD 1844, 1871
and 1890. The suppression was so severe in these cases that the trees never
recovered their normal growth. The two curves represent separate tree-ring
sequences (from Fantucci and Sorriso-Valvo, 1999 ).

8
6
4
2
0

1830 1850 1870 1890 1910 1930 1950 1970 1990

Years

8
6
4
2
0

Undisturbed tree

1830 1850 1870 1890 1910 1930 1950 1970 1990

Years

Figure 7.7. Growth curves as in Fig 7. 6 except tree shown by first curve shows
suppression of tree-ring growth following an event in 1931. Tree shows recovery
from suppression after approximately AD 1965. Second curve shows undisturbed
ring growth for tree not affected by landslides (from Fantucci and Sorriso-Valvo,
1999 ).