European building activity determined from tree-ring-dated historical timber (IMAGE)
Caption
European building activity changes are shown by compiling annual felling dates of construction timbers from the thirteenth to seventeenth century, which are presented as index values in green. Distinct phases of building activity are highlighted by a black line whereas major decreasing or increasing changes building activity are indicated by red arrows.
Credit
F. Ljungqvist, A. Seim, W. Tegel et al.
Usage Restrictions
Credit must be given to the creator.
License
CC BY