Nicolas Sanson and his Map: The Course of the Amazon River

Acta Amazonica

Jorge Pimentel Cintra²  Rafael Henrique De Oliveira¹ 

[1] ,Universidade de São Paulo Escola Politécnica Departamento de Engenharia de TransportesSão Paulo SP ,Brazil

关键词: Historical Cartography;    Longitude;    Accuracy;    La Condamine;    Pagan;    Cartografia histórica;    Longitude;    Precisão;    La Condamine;    Pagan;   

DOI  :  10.1590/1809-4392201302944

来源: SciELO

【 摘 要 】

One of the first scientific maps of the Amazon region, The Course of the Amazon River (Le Cours de La Rivière des Amazones), was constructed by Nicolas Sanson, a French cartographer of the seventeenth century, and served as the prototype for many others. The evaluation of this chart, until now, has been that it is a very defective map, a sketch based on a historical account, according to the opinion of La Condamine. Thus, the aim of the present work was to prove that the map of the Amazon River traced by Nicolas Sanson is a scientific work, a map that presents precise geographic coordinates considering its time, shows a well-determined prime meridian, and also employs a creative methodology to deduce longitudes from latitudes and distances that had been covered. To show such characteristics, an analysis of the accuracy of the map was made by comparing its latitudes and longitudes with those of a current map. We determined the prime meridian of this map and analyzed the methodology used for the calculation of longitudes. The conclusion is that it is actually a good map for the time, particularly considering the technology and the limited information that Sanson had at his disposal. This proves that the negative assertion of La Condamine is unfounded.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License