Using climbing guides to examine changes in rockfall activity in the European Alps
Readers may be interested in a post by Prof David Petley on his landslide blog
http://blogs.agu.org/landslideblog/2016/06/18/climbing-guides-1/
there is a discussion of a paper* looking at climbing guides published over the last 146 years for the Bernese Oberland in relation to climate change.
"It is clear that there has been a remarkable increase in the description of rockfall danger over the period, and that most of this has occurred in the last three decades"
*Temme, A.J.A.M., 2015. Using climber’s guidebooks to assess rock fall patterns over large spatial and decadal temporal scales: an example from the Swiss Alps. Geografiska Annaler: Series A, Physical Geography. 97, 793–807. doi:10.1111/geoa.12116
