Articles | Volume 15, issue 11
https://doi.org/10.5194/essd-15-4781-2023
© Author(s) 2023. 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-15-4781-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description paper
| 
31 Oct 2023
Data description paper |
| 31 Oct 2023
| 31 Oct 2023
An earthquake focal mechanism catalog for source and tectonic studies in Mexico from February 1928 to July 2022
Quetzalcoatl Rodríguez-Pérez
CORRESPONDING AUTHOR
Dirección de Desarrollo Científico, Consejo Nacional de Ciencia y Tecnología, Mexico City, Mexico
F. Ramón Zúñiga
Centro de Geociencias, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, Mexico
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We studied statistical characteristics of non-volcanic tremors (NVT). The b-value of NVTs varies from 1.25 to 2.42; the plate interface down-dip regions exhibit the highest values. In contrast, the q-value shows an inverse behavior. The NVT sequences also exhibit a multifractal structure in magnitude and interevent data.
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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.
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Quetzalcoatl Rodríguez-Pérez, Víctor H. Márquez-Ramírez, and F. Ramón Zúñiga
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We studied statistical characteristics of non-volcanic tremors (NVT). The b-value of NVTs varies from 1.25 to 2.42; the plate interface down-dip regions exhibit the highest values. In contrast, the q-value shows an inverse behavior. The NVT sequences also exhibit a multifractal structure in magnitude and interevent data.
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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.
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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.
Raphael S. M. De Plaen, Víctor Hugo Márquez-Ramírez, Xyoli Pérez-Campos, F. Ramón Zuñiga, Quetzalcoatl Rodríguez-Pérez, Juan Martín Gómez González, and Lucia Capra
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Short summary
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COVID-19 pandemic lockdowns in countries with a dominant informal economy have been a greater challenge than in other places. This motivated the monitoring of the mobility of populations with seismic noise throughout the various phases of lockdown and in the city of Querétaro (central Mexico). Our results emphasize the benefit of densifying urban seismic networks, even with low-cost instruments, to observe variations in mobility at the city scale over exclusively relying on mobile technology.
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Short summary
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.
We present a comprehensive catalog of focal mechanisms for earthquakes in Mexico and neighboring...
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