Abstract
The spatial analysis of the geomagnetic field through time allows obtaining some crucial information about the evolution of the Earth's deep interiors and outer core-mantle conditions. Apart from discrete palaeomagnetic and archaeomagnetic records, the direct magnetic measurements of declination, inclination and intensity may largely contribute to unearthing historical geomagnetic distribution maps. The available historical data in Mexico (https://doi.org/10.1016/j.pepi.2020.106433, Physics of the Earth and Planetary Interiors 300, 2020, 106433) may be divided into two large groups: Data from the different observatories in Mexico between 1879 and 2018 (139 years); and the historical values of magnetic cartography accumulated in several documents between 1587 and 2018 (431 years). Part of the specific objectives of magnetic mapping in Mexico is the estimation and analysis of the local and global behavior of the geomagnetic phenomena. The historical geomagnetic record gathers data on the declination, inclination and total geomagnetic intensity obtained initially by sailors that represent a unique scientific heritage in Latin America.
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