The Marseille tide gauge : heritage and modernity
Continuing with the Marseille tide gauge, an article has just appeared in the XYZ journal (March 2009) by Alain Coulomb, Head of the Réseaux de référence matérialisés department at IGN. This article retraces in detail and with accuracy the history of the tide gauge, placing it in the past and present context. The article is written in an academic manner. The author recalls geoid and altitude concepts while indicating how these concepts arose and how they have been applied in France. There is no doubt the article is a very useful and informative reference source (IGN). The article is reproduced here in PDF format (in french) by kind permission of the XYZ journal.
AFT website : http://www.aftopo.org