出版社：National Centre for Maps and Cartographic Heritage
摘要：Two coeval 16thcentury maps of the Po river delta area (Northern Adriatic Sea), both signed by Ottavio Fabri, were studied to understand the differences in their contents, to test their georeferencing and to accomplish the first evaluation of existing errors. As they are pre-geodetic documents, many problems were involved in performing the analy-sis. The chief problems were the inability to record the true, original author errors and the im-possibility to restore the shape of the eroded landscape and morphological tracts, due to the current non-existence of recognizable landmarks for a large part of the area. To overcome these problems, an analysis approach is suggested, which consists in: i) attempting to recog-nize the original survey techniques and their restrictions; ii) evaluating the true differences between the ancient map and the preserved environmental context. In this paper, different methods were used to test the reliability of the georeferencing meth-ods, so as to understand their effectiveness in highlighting the kinds of errors recorded in the maps
关键词：pre-geodetic cartography; georeferencing; landmarks; coastline; Po river delta
