The rescue and digitisation of historical tide gauge data constitutes a further important source of sea level data, particularly since France has a wealth of stations and data (See the online inventory by SHOM or Appendix A of the PhD thesis of N.Pouvreau) which is testimony to a past that cannot be revisited (to perform measurements) but which is interesting to study in order to understand the changes in sea level that occur today. (Follow this link to find out more about French tide gauge heritage and a useful digitisation tool: NUNIEAU). Here are a few examples of ongoing or previous work, illustrated by posters :