Geodetic innovation in Chilean mining: The evolution from static to kinematic reference frame in seismic zones

The use of regional kinematic reference frames (mRFs) in seismic zones is uncommon worldwide. This article proposes a solution implemented for Chilean mining, whose current projects are based on the classic reference frames (PSAD56 and SAD69). The approach is to move from a classic reference frame t...

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Bibliographic Details
Published in:Journal of Geodetic Science (Online) 2024-05, Vol.14 (1), p.pp. 162-167
Main Authors: Tarrío, José Antonio, Cáceres, Catalina, Vásquez, Valeria, Marten, Miguel, Inzunza, Jesarella, Isla, Fernando, Caverlotti, Marcelo, Jeldres, Gabriel, Urrutia, Rodrigo, Mardones, Cristian, Fernandes, Rui
Format: Article
Language:English
Subjects:
coordinate transformation
deformation model
global navigation satellite system
kinematic reference frame
Sistema de Referencia Geodésico para las Américas
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Summary:The use of regional kinematic reference frames (mRFs) in seismic zones is uncommon worldwide. This article proposes a solution implemented for Chilean mining, whose current projects are based on the classic reference frames (PSAD56 and SAD69). The approach is to move from a classic reference frame to an mRF in seismic countries where earthquakes constantly alter the frame. Our research group calculated an mRF (REDGEOMIN) that includes interseismic, coseismic, and postseismic deformation using CORS with open data from 2009 to 2022 and processed with scientific standards global navigation satellite system. REDGEOMIN consists of a deformation model (ADELA) with an interpolation approach through thin plate spline, allowing the greatest deformation to be modelled at campaign points. The relationship between classical and modern systems was explored with conformal transformations and NTv2 grids to include deformations, especially coming from PSAD56 and SAD69. The results demonstrate that REDGEOMIN aligns with the IGb14 reference frame (
ISSN:2081-9943
2081-9943
DOI:10.1515/jogs-2022-0173