In case you are used to consulting virtual maps to your cell phone or to your automotive, it is going to appear that the previous maps haven’t any sensible use anymore. They’re frequently thought to be archival items, treasured from a historic perspective, however of little significance for present medical research. On the other hand, this belief is fallacious. Some historic maps are nonetheless a fundamental supply of data for working out how the territory has modified through the years.
Tofina nautical chart from 1789
Vicente de Tofinho de San Miguel, Royal Army detachment chief. Nameless. Wikimedia Commons.
A excellent instance is the nautical chart of the Gulf of Cadiz ready in 1789 by means of Vicente Tofinho de San Miguel. Regardless of being made greater than 3 centuries in the past, this cartography lets in us to reconstruct in beautiful element the configuration of the coast within the 18th century and examine it to the bay we all know nowadays.
Vicente Tofinho was once a key determine within the Spanish Enlightenment. A sailor and scientist, he directed the Maritime Atlas of Spain challenge, designed to support navigation and coastal wisdom via systematic observations. The map of the Bay of Cadiz was once no longer an approximate drawing or creative illustration, however a technical report ready the usage of probably the most complex strategies to be had on the time.
Combining historical past with new applied sciences
On the other hand, running with this sort of cartography nowadays items sure difficulties. The map from 1789 does no longer include fashionable geographic coordinates, nor does it specify its cartographic projection. Additionally, its orientation isn’t the same as the standard one on present maps. For a very long time, those boundaries supposed that historic maps had been thought to be of little use for rigorous spatial research.
This example has modified due to the advance of latest applied sciences. Lately, previous maps can also be built-in with gear comparable to geographic data methods (GIS), satellite tv for pc positioning (GNSS), faraway sensing and fashionable virtual mapping ways. Thru georeferencing processes, it’s conceivable to conform historic cartography to present reference methods, the usage of components of the territory that stay recognizable through the years.
First web page of the Maritime Atlas of Spain, an 18th-century paintings by means of Vicente Tofinho. Nationwide Library of Spain. The existing worth of historic cartography
A concrete instance is helping to grasp the price of this means. By means of superimposing the 1789 map with present cartography, it’s famous that enormous spaces that nowadays shape a part of the city and harbor entrance of the bay had been then intertidal areas or marshes.
Tofino chart, adjusted the usage of GNSS and GIS methodologies, the usage of 9 keep watch over issues and elastic adjustment (rubber) methodology. Bismarck Jigen Antelo et al.
In some sectors of the internal of the bay, the historic coast turns out to have moved a number of hundred meters from the present one, which permits us to obviously see the magnitude of the transformations that the coast has gone through. Those adjustments aren’t simply historical past: they proceed to impact the bay’s present habits.
Thus, a comparability of each historic moments finds profound transformations within the Gulf of Cádiz. The coast has been considerably altered, particularly in probably the most urbanized spaces. Spaces that had been little modified within the 18th century nowadays display in depth profession and a distinctly other morphology, the results of the interplay between herbal processes and human motion.
Realizing what the bay was once like ahead of the foremost works is helping provide an explanation for why some spaces are extra susceptible than others nowadays.
Witness how adjustments impact the coast
On this manner, along with a easy visible description, the 1789 map acts as a historic reference that is helping contextualize the transformations of the coast and higher perceive its evolution over virtually 3 centuries. Having this extensive temporal point of view is particularly treasured in a coastal atmosphere as dynamic and delicate because the Gulf of Cádiz.
The hobby of this means isn’t restricted to this actual case. A mixture of historic mapping and present applied sciences is utilized in a lot of coastal spaces to check coastline evolution, adjustments in ancient estuaries and harbors, and transformation of city fronts.
Morphological adjustments at the coast and concrete spaces of the Bay of Cadiz. Bismarck Jigen Antelo et al.
Ceaselessly, previous maps are the one to be had supply for figuring out the state of the territory ahead of the foremost interventions of the twentieth century.
At a time of accelerating power on coastlines, having a look to the previous with the gear of the current could also be probably the most absolute best techniques to make extra knowledgeable choices for the longer term.
Satellite tv for pc symbol of the Bay of Cadiz. Google Earth Professional 2026.
