Juan C. Montalvo‐Arrieta

Universidad Autónoma de Nuevo León

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Xyoli Pérez‐Campos

Universidad Nacional Autónoma de México

Juan Alonso Ramírez Fernández

Universidad Autónoma de Nuevo León

Luis G. Ramos-Zúñiga

Universidad Autónoma de Nuevo León

Jorge A. Salinas‐Jasso

Universidad Autónoma de Nuevo León

Fernando Velasco-Tapia

Universidad Autónoma de Nuevo León

Víctor H. Espíndola

Universidad Nacional Autónoma de México

Rocío L. Sosa‐Ramírez

Universidad Autónoma de Nuevo León

Ignacio Navarro de León

Universidad Autónoma de Nuevo León

Víctor Alejandro Leal‐Cuellar

Universidad Autónoma de Nuevo León

Luis A. Gallardo

Center for Scientific Research and Higher Education at Ensenada

Cooperative Institutions

Universidad Nacional Autónoma de México

Universidad Autónoma de Nuevo León

Center for Scientific Research and Higher Education at Ensenada

Universidad Juárez Autónoma de Tabasco

Research Center on Earth Sciences

Instituto de Geociencias

Autonomous University of Queretaro

Autonomous University of Tamaulipas

NASA Earth Science

Lomonosov Moscow State University

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The effect of confinement due to COVID-19 on seismic noise in Mexico

Solid Earth (2021)

Xyoli Pérez‐Campos Víctor H. Espíndola Daniel González-Ávila Betty Zanolli Fabila Víctor Hugo Márquez-Ramírez

Abstract. The world experienced the beginning of the COVID-19 pandemic by the end of 2019 to the beginning of 2020. Governments implemented strategies to contain it, most based on lockdowns. Mexico was no exception. The lockdown was initiated in March 2020, and with it, a reduction in the seismic noise level was witnessed by the seismic stations of the national and Valley of Mexico networks. Stations located in municipalities with more than 50 000 people usually experience larger seismic noise levels at frequencies between 1 and 5 Hz, associated with human activity. The largest noise levels are recorded in Mexico City, which has the largest population in the country. The largest drop was observed in Hermosillo, Sonora; however, it was also the city with the fastest return to activities, which seems to correlate with a quick increase in confirmed COVID-19 cases. Mexico initiated a traffic-light system to modulate the re-opening of economic activities for each state. Therefore, since 1 June, noise levels have generally reflected the colour of the state traffic light. Furthermore, the reduction in the noise level at seismic stations has allowed identification of smaller earthquakes without signal processing. Also, people in cities have perceived smaller or more distant quakes.

Seismic Noise

Mexico city

Pandemic

10.5194/se-12-1411-2021

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Citations (14)

A Virtual Reference Site for the Valley of Mexico

Bulletin of the Seismological Society of America (2002)

Juan C. Montalvo‐Arrieta

We propose the use of the average spectra of northern strong-motion stations located at the hill zone (e.g., MD, TX, ES, 64) as the reference for Mexico City's ground motion. This virtual-site proposal is based on the analysis of recent data from the Mexico City Acelerometric Network. The northern stations show amplitudes, both in time and frequency, that are consistently smaller than those of hill-zone stations located south and west of the city (e.g., CU). It is well known that CU, the historical reference site in Mexico City, and other sites to the southwest, present amplifications, whereas the northern ones appear to be free of such effects. The spectral ratio of the averages of the stations located in the south and west with respect to the northern stations shows a relatively constant amplification of up to 3 times in the 0.7-10.0-Hz-frequency band. This amplification is a very unusual feature that should be explained. The geologic conditions at the hill zone show that older, Miocene-age deposits are located north of the city. Considering that northern sites represent the basement, we assume that the configuration along the hill zone in the N-S direction can be approximated by a simple, dipping, homogeneous layer. We computed the antiplane seismic response for this model and averaged and compared it with the spectral ratio obtained from strong ground motion data. The agreement is good and suggests how a smooth, large-scale feature could amplify seismic ground motion in a broad frequency band. Manuscript received 12 October 2001

10.1785/0120010257

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Improvement of Shallow Seismic Characterization Using the Singular Value Decomposition (SVD) Method in Seismic Data Inversion: A Case Study of a Site in Northeast Mexico

Journal of Environmental and Engineering Geophysics (2020)

Victor E. Infante-Pacheco Juan C. Montalvo‐Arrieta Ignacio Navarro de León Fernando Velasco-Tapia

Several approaches can be taken to conduct seismic data inversion. However, usually, these approaches are unable to distinguish vertical and horizontal heterogeneities. Seismic inversion through the singular value decomposition (SVD) method offers an adequate and simple way to improve these traditional inversion models. For this study P and S wave data were acquired at a site located in northeastern Mexico, obtaining their travel times. An inversion algorithm involving the SVD analysis was then developed to establish the seismic velocities of the lithological units. Further, images of compressional and shear-wave velocities ( V p and V s , respectively), V p / V s ratio, and elastic moduli (bulk, shear and Young's moduli, Lamé's constant, and Poisson's ratio) were obtained. These were compared with two geotechnical soundings positioned over a geophysical profile line. The geological features of the exposed units were recognized on some trenches. Further, seismic images demonstrated correlations with the thickness and distribution of the geological units. Unconsolidated sediments and fine-grain clastic rocks (in the Méndez formation) were clearly distinguished by the high velocity contrast. SVD seismic inversion has shown the ability to distinguish small physical heterogeneities of shallow geological units. Its application in civil engineering, hydrogeology, and to solve soil pollution problems can be relevant.

Poisson's ratio

Vertical seismic profile

10.32389/jeeg20-037

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Citations (3)

Spatial distribution of the Mohorövicic discontinuity beneath northeastern Mexico based on receiver functions from acceleration and velocity records

Journal of South American Earth Sciences (2025)

Carlos E. Montalvo-Lara Xyoli Pérez‐Campos Juan C. Montalvo‐Arrieta

Discontinuity (linguistics)

Receiver function

10.1016/j.jsames.2025.105379

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Seismic characterization of station LNIG as a reference site in Northeast Mexico

Geofísica Internacional (2022)

Luis G. Ramos‐Zuñiga Juan C. Montalvo‐Arrieta Xyoli Pérez‐Campos Carlos Valdés González

La estación LNIG forma parte de Ia nueva generación de observatorios sismológicos que han sido instalados en los últimos a nos en Ia Republica Mexicana por el Servicio Sismológico Nacional (Mexico). La estación LNIG se instaló en enero de 2006 en terrenos de Ia Facultad de Ciencias de Ia Tierra de Ia Universidad Autónoma de Nuevo León en Linares, Nuevo León, Mexico. Evaluamos Ia respuesta de sitio de Ia estación LNIG de acuerdo con Ia definición del sitio estándar de referencia. Se obtuvo (a) el valor promedio de velocidades de ondas de corte para los primeros 30 m del subsuelo, V530, y (b) Ia frecuencia de resonancia. A partir de perfiles de refracción sísmica, obtuvimos V530 = 1870 m/s. De acuerdo con Ia NEHRP, corresponde a un sitio clase A (roca dura o macizo rocoso). La frecuencia de resonancia fue obtenida mediante cocientes espectrales H/V de registros de microtremores y de sismos locales (3.1 ≤; M : ≤; 4.5), los cuales muestran una respuesta plana con amplitud unitaria, para el rango de frecuencias de 0.2 a 20 Hz. De acuerdo con Ia definición propuesta por Steidl et at. ( 1996) y Cadet et al. (2010), Ia estación sismológica LNIG queda definida como un sitio de referencia, el cual se encuentra asentado sobre lutita de Ia Formación Méndez del Cretácico superior.doi: sin doi

10.22201/igeof.00167169p.2012.51.2.609

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The Santo Domingo fault system, Galeana (Nuevo Leon): evidence of neotectonics between the Sierra Madre Oriental and the Basin and Range provinces and hazard implications for northeastern Mexico

International Journal of Earth Sciences (2023)

Iris Lucia Gauna-Sauceda Juan C. Montalvo‐Arrieta Jorge A. Salinas‐Jasso Juan Alonso Ramírez Fernández

Lineament

Neotectonics

Transtension

Sinuosity

Echelon formation

Stress field

10.1007/s00531-023-02334-1

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Metasomatized mantle under the Eastern Mexican Alkaline Province: evidence from the Oligocene Rincón Murillo Gabbro, Sierra de San Carlos-Cruillas, NE México

International Geology Review (2023)

Víctor Alejandro Leal‐Cuellar Juan Alonso Ramírez Fernández Reneé González‐Guzmán Fernando Velasco-Tapia Luigi Solari

The Cenozoic Sierra de San Carlos-Cruillas (SSCC) magmatic complex belongs to the Eastern Mexican Alkaline Province (EMAP). The SSCC mainly consists of plutonic and subvolcanic bodies displaying diverse lithological compositions. These rocks exhibit both OIB- and arc-like geochemical characteristics. In this contribution, we present new petrographic, geochemical, isotopic, and geochronological data of the Rincón Murillo Gabbro (RMG), situated in the southern part of the SSCC. The RMG is nepheline normative and displays an OIB-like intraplate character. Laser ablation ICP-MS U-Pb analyses on titanites yielded Oligocene (Rupelian) crystallization ages of 31.8 ± 1.8 and 31.0 ± 1.7 Ma. The 87Sr/86Sr(i) (0.703400–0.704159) and 143Nd/144Nd(i) (0.512732–0.512815) ratios indicate a mantle origin. Trace element data indicate the participation of different enriched mantle components in the source. One component is related to previous subduction processes, generating the HFSE-depleted arc-like magmas of San José Gabbro in the northern part of SSCC. The second component is related to deep mantle melts with a slightly carbonatitic signal and HFSE-enriched fluids derived from the subducted Hess conjugate plateau generating different enriched sources in the upper mantle under the SSCC. The passage, eclogitization, detachment and foundering of the Hess plateau gave rise to an asthenospheric upwelling that triggered the low to moderate partial melting degrees (3–15%) of an amphibole-bearing garnet peridotite, generating the OIB-like parental magmas of RMG, located in the southern part of SSCC. Two-component mixing, and AFC models indicate that variable degrees of crystal fractionation and minor crustal assimilation are involved in the evolution of Rincón Murillo Gabbro.

Peridotite

Amphibole

Mantle plume

Lile

10.1080/00206814.2023.2209895

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Seismological evidence of basement and detachment fault reactivations in the northern sector of the front of the Salient of Monterrey, Sierra Madre Oriental, northeastern Mexico

Acta Geophysica (2023)

Juan C. Montalvo‐Arrieta Jorge A. Salinas‐Jasso Juan Alonso Ramírez Fernández Luis G. Ramos-Zúñiga Víctor H. Espíndola

Thrust fault

Fault plane

Basement

10.1007/s11600-023-01220-3

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Patrones de sismicidad en la curvatura de Monterrey, noreste de México

Deleted Journal (2012)

Luis G. Ramos‐Zuñiga Hugo Cesar Medina-Ferrusquia Juan C. Montalvo‐Arrieta

El noreste de Mexico ha sido considerado durante mucho tiempo como una region asismica. Sin embargo, existe la evidencia historica de la ocurrencia de temblores desde hace mas de 160 anos, la cual ha sido confirmada a partir de la instalacion de la estacion sismologica LNIG en enero de 2006 (Servicio Sismologico Nacional). La sismicidad en el interior de los continentes puede llegar a ser devastadora, debido a que la mayoria de las poblaciones han sido edificadas sin criterios de diseno sismico. Se propone un modelo geodinamico de intraplaca para explicar los patrones de sismicidad observados a partir de correlacionar: (a) la actividad sismica ubicada en la curvatura de Monterrey para el periodo 1847–2011; (b) datos aeromagneticos y (c) informacion geologica y estructural disponible. La integracion permitio correlacionar epicentros con alineamientos y estructuras geologicas cartografiadas, observandose una concentracion de dicha actividad principalmente a lo largo de las provincias geologicas Sierra Madre Oriental y Planicie Costera del Golfo de Mexico Norte. La correlacion entre los datos aeromagneticos y la sismicidad, permitio identificar alineamientos en la planicie costera que pueden asociarse con las estructuras geologicas del Alto de Teran, la sierra San Carlos y Papagayos. Se propone que el modelo que permite explicar los patrones de sismicidad ocurrida en la region de estudio es el de zona de limite entre bloques. En este modelo, los terremotos de intraplaca se asocian con estructuras litosfericas de gran escala y la deformacion involucra toda la litosfera, como en los limites entre placas. En la sismicidad del area de estudio, la variacion espacio-temporal es resultado de un sistema complejo de fallas que interactuan para una region especifica y que los sismos no se pueden entender como el producto de fallas aisladas.

Source

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Citations (8)

Relocation and seismotectonic interpretation of the seismic swarm of August - December of 2012 in the Linares area, northeastern Mexico

Geofísica Internacional (2016)

Carmen M. Gómez-Arredondo Juan C. Montalvo‐Arrieta Arturo Iglesias-Mendoza Victor H. Espíndola-Castro

We relocated 52 events of 2.5 â‰¤ Mc â‰¤ 3.6 from a seismic sequence of over 250 events that occurred during July-December 2012 southwest of the Linares area, northeastern Mexico. To examine this swarm four seismic stations were installed in the region and operated during different time periods from September to December. Relocation of the swarm showed that the earthquake hypocentral depths were at 8 (Â±5) km, and the time residuals had values â‰¤ 0.38 s. The fault plane solutions were generated for individual earthquakes and through the use of the composite mechanism technique. The focal mechanism solutions show pure reverse faulting; the SW dipping NNW - SSE trending nodal plane is the inferred fault plane (strike ~150°, dip ~50° and rake ~67°), which reveals that maximum horizontal stress (SHmax > Shmin > Sv) predominates in the area.

Relocation

Fault plane

Focal mechanism

Rake

10.22201/igeof.00167169p.2016.55.2.1714

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Citations (13)