Chile, where the earth trembles daily and even a traditional...
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SIRGAS (Geodetic Reference System for the Americas) is the organization responsible for defining and maintaining the official geodetic reference framework in the Americas and the Caribbean, in accordance with international standards. Its system is compatible with the International Terrestrial Reference System (ITRS) and constitutes its regional densification, enabling the precise determination of positions and elevations.
Since its creation in 1993, SIRGAS has evolved as a Pan-American initiative driven by international organizations and national agencies, establishing itself as a key component of the region’s geospatial infrastructure. In addition to the geometric system, it develops a vertical reference system based on the Earth’s gravity field.
SIRGAS integrates governmental, academic, and scientific institutions and works in coordination with international organizations to support navigation, mapping, geoscience research, and sustainable development. Its operation is based on regional cooperation and an active network of experts committed to strengthening geodetic capabilities in the Americas.





















