Articles | Volume 18, issue 10
https://doi.org/10.5194/essd-18-7403-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-7403-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Ground-motion dataset for shallow earthquakes in Colombia
Daniel Martinez-Jaramillo
CORRESPONDING AUTHOR
Posgrado en Ciencias de la Tierra, Instituto de Geociencias, Universidad Nacional Autónoma de México, Querétaro, 76230, México
Sreeram-Reddy Kotha
University Grenoble Alpes, University Savoie Mont Blanc, CNRS, IRD, University Gustave Eiffel, ISTerre, 38400 Grenoble, France
F. Ramón Zúñiga
Instituto de Geociencias, Universidad Nacional Autónoma de México. Juriquilla, 76230, Querétaro, México
Pierre Lacan
Instituto de Geociencias, Universidad Nacional Autónoma de México. Juriquilla, 76230, Querétaro, México
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Quetzalcoatl Rodríguez-Pérez, Víctor Hugo Márquez-Ramírez, and Francisco Ramón Zúñiga
Solid Earth, 17, 803–824, https://doi.org/10.5194/se-17-803-2026, https://doi.org/10.5194/se-17-803-2026, 2026
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We studied the statistical properties of weak signals known as non-volcanic tremors along the Mexican coast to understand how the earth moves deep underground. By analyzing the timing and size of these faint tremors, we discovered they behave similarly to regular earthquakes but follow complex, persistent patterns. Our findings suggest these movements are influenced by underground fluids and nonlinear forces. This work clarifies how energy builds up, improving our grasp of earthquake risks.
Nicolas Harrichhausen, Léo Marconato, Laurence Audin, Pierre Lacan, Stéphane Baize, Hervé Jomard, Alexandra Alvarado, James Hollingsworth, Pierre-Henri Blard, Patricia Ann Mothes, Frédérique Rolandone, and Iván Dario Ortiz Martin
Solid Earth, 17, 763–787, https://doi.org/10.5194/se-17-763-2026, https://doi.org/10.5194/se-17-763-2026, 2026
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Tectonic plates can be broken into smaller blocks with deformation concentrated at their boundaries. We use remote sensing and field studies to investigate how faulting accommodates deformation at the northern boundary of the Quito-Latacunga microblock (Ecuador & Colombia). We show this boundary is a wide zone characterized by several parallel faults capable of hosting moderate to large (<M7) earthquakes, such as the one in 2022, and which may be influenced by nearby volcanism.
Quetzalcoatl Rodríguez-Pérez and F. Ramón Zúñiga
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2024-92, https://doi.org/10.5194/nhess-2024-92, 2024
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Seismic intensity reflects earthquake damage, although this parameter is often subjective. On the other hand, peak acceleration values are a direct measure of earthquake effects. Seismic intensity was used to describe historical earthquakes, and its use is rare today. For this reason, it is important to have a relationship between these parameters of strong movements in order to predict the acceleration of historical earthquakes.
Graeme Weatherill, Sreeram Reddy Kotha, Laurentiu Danciu, Susana Vilanova, and Fabrice Cotton
Nat. Hazards Earth Syst. Sci., 24, 1795–1834, https://doi.org/10.5194/nhess-24-1795-2024, https://doi.org/10.5194/nhess-24-1795-2024, 2024
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The ground motion models (GMMs) selected for the 2020 European Seismic Hazard Model (ESHM20) and their uncertainties require adaptation to different tectonic environments. Using insights from new data, local experts and developments in the scientific literature, we further calibrate the ESHM20 GMM logic tree to capture previously unmodelled regional variation. We also propose a new scaled-backbone logic tree for application to Europe's subduction zones and the Vrancea deep seismic source.
Quetzalcoatl Rodríguez-Pérez and F. Ramón Zúñiga
Solid Earth, 15, 229–249, https://doi.org/10.5194/se-15-229-2024, https://doi.org/10.5194/se-15-229-2024, 2024
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The behavior of seismic energy parameters and their possible dependence on the type of fault for globally detected earthquakes were studied. For this purpose, different energy estimation methods were used. Equations were obtained to convert energies obtained in different ways. The dependence of the seismic energy on the focal mechanism was confirmed up to depths close to 180 km. The results will help to explain the seismic rupture of earthquakes generated at greater depth.
Quetzalcoatl Rodríguez-Pérez and F. Ramón Zúñiga
Earth Syst. Sci. Data, 15, 4781–4801, https://doi.org/10.5194/essd-15-4781-2023, https://doi.org/10.5194/essd-15-4781-2023, 2023
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We present a comprehensive catalog of focal mechanisms for earthquakes in Mexico and neighboring areas spanning February 1928 to July 2022. The catalog comprises a wide range of earthquake magnitudes and depths and includes data from diverse geological environments. We collected and revised focal mechanism data from various sources and methods. The catalog is a valuable resource for future studies on earthquake source mechanisms, tectonics, and seismic hazard in the region.
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Short summary
Colombia is regularly struck by damaging earthquakes. We gathered and uniformly processed 7550 recordings from 667 shallow earthquakes into a single open collection describing each earthquake, recording site and level of shaking. Comparison with widely used prediction methods confirmed its quality. The collection can help engineers design safer buildings and improve earthquake hazard maps in Colombia and similar regions.
Colombia is regularly struck by damaging earthquakes. We gathered and uniformly processed 7550...
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