Seismic patterns of the Guerrero-Oaxaca, Mexico region, and its relationship to the continental margin structure

Yamamoto, J.; González-Morán, Tomas; Quintanar, Luis; Zavaleta, Ana B.; Zamora, Araceli; Espíndola, Víctor Hugo

doi:10.1093/gji/ggs025

Cited by 11 publications

(15 citation statements)

References 18 publications

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“…In this case, there were no significant statistical differences between data series, and the behavior was very similar in the continental and marine en- However, in the case of site CAW02, the influence of surrounding environment related to lithological barriers and regional and local stratigraphic units, affects different in the regional and local hydrological dynamics, so the water conductivity behavior data recorded in the site CAW02 is influenced possibly by local lithological and stratigraphic conditions, region that has a complex tectonic history of magmatism and metamorphism, with many discontinuities or weakness zones, because possibly the local crust is highly fractured [37]. Seemingly these surrounding environment conditions caused significant statistical differences among the main oscillations of conductivity records above described and possibly promote the slight seismic activity too [11] [48].…”

Section: Discussionmentioning

confidence: 99%

“…), Figure 41. It seems that the observed behavior is possibly resulted of the local conditions related to the physical environment, which are characterized by a setting with a higher temperature in relation to the surrounding environment, 30% more [44], also is settled in a region with a complex tectonic history of magmatism and metamorphism, also the regional continental crust is probably highly fractured [37].…”

Section: Trends Of Natural Conductivity Of Water and The Earthquakes mentioning

confidence: 99%

“…In addition, the data analyzed of the coastal border drove to another pattern, the subtle connection with the subsequent occurrence of seismic activity and the atypical variations of conductivity data, this behavior is possibly influenced by energy emanating from inside the Earth's layers taking into account the possible high level of rock fracturing of the regional continental crust [37].…”

Section: Backgroundsmentioning

confidence: 99%

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Statistical Analysis of Natural Water Conductivity Data Behavior in Two Wells: Seismic Coastal Border Limits of Guerrero-Oaxaca States, Mexico

Martínez-García¹

2017

OALib

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In this document, with the purpose of strengthening more in the knowledge of the previous events on the earthquakes, the possible connection between natural voltage and electromagnetic energy emanating from the inner layers of the Earth and the seismic activity in the Mexican seismic coastal border, is evaluated, through an indirect estimation of the statistical analysis of natural water conductivity data (μS/cm) and the seismic activity occurred in the same period within continental and marine environment, monitored intensively from February 2 to April 15, 2015 and from May 11 to July 17, 2015 in two ordinary man-made wells. A total 128,469 water conductivity data with a sampling frequency of 45 seconds, confronted with 950 earthquakes occurred in the same periods to distance range of 50, 100, 150, 200, 250, 300, 350 and 400 kilometers far away from a conductivity sensor, are analyzed. As results, in the range of 50 kilometers round the conductivity sensor, the study area applied demonstrates to be a location where the major quantity of earthquakes and most atypical conductivity variations occurred. The influence of the local environment on the behavior of the conductivity data is debated according to the geographical position of the conductivity sensor. Within the continental environment, the range of 0 to 50 km showed the most important statistical significance, revealing to have the most number of earthquakes, with higher values and more intensity, particularly when the trend of conductivity data is descending. Within the marine environment, a very similar connection between the conductivity data behavior and seismic activity occurred was observed.

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Section: Discussionmentioning

confidence: 99%

Section: Trends Of Natural Conductivity Of Water and The Earthquakes mentioning

confidence: 99%

Section: Backgroundsmentioning

confidence: 99%

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Statistical Analysis of Natural Water Conductivity Data Behavior in Two Wells: Seismic Coastal Border Limits of Guerrero-Oaxaca States, Mexico

Martínez-García¹

2017

OALib

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“…The data (focal mechanisms) obtained by local seismic networks and analyzed in several previous studies of Pacheco and Singh (2010), Yamamoto et al (2013) and events localized and analyzed by National Seismologic Service (Mexican SSN http://www.ssn.unam.mx/) are used in this work. The study area includes 53 thrust earthquakes from local catalog (see Additional file 1).…”

Section: Methodsmentioning

confidence: 99%

“…1 Earthquakes from the local catalog. Subduction thrust events from Pacheco and Singh (2010) and Yamamoto et al (2013). Three groups of vectors represent three regions.…”

Section: Introductionmentioning

confidence: 99%

Activity of crustal faults and the Xolapa sliver motion in Guerrero–Oaxaca forearc of Mexico, from seismic data

Kazachkina

Kostoglodov

Husker

et al. 2019

Earth Planets Space

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Oblique convergent margins often host forearc slivers separated by the subduction interface and a trench parallel strike-slip fault system in the overriding plate. Mexican oblique subduction setting led to the formation of a forearc sliver and accomodation of part of the slip at the bounding system of strike-slip faults. The Xolapa sliver is, on average, a ∼ 105-km-wide crustal block located along the coast of Guerrero and Oaxaca states of Mexico, and is limited by a ∼ 650-km-long La Venta-Chacalapa fault zone. Two types of datasets, local catalog and Global CMT compilation, are used to estimate the motion of the Xolapa sliver using the rigid block model that describes the phenomenon of slip partitioning. According to the results obtained from local and Global CMT catalogs for selected subduction thrust earthquakes, the forearc sliver moves southeastwards with respect to the fixed North America plate at the rate of 10 ± 1 mm/year and 5.6 ± 0.8 mm/year, respectively. These velocities in general agree with the values obtained from long-term GPS observations (5-6 mm/year). The origin of the inconsistency between local and teleseismic estimates is attributed to a difference in the double couple focal mechanism parameters for two types of datasets. Convergence obliquity changes from 10.42 • and the rate of 58 mm/year to 13.29 • at the rate of 68 mm/year along the Guerrero and Oaxaca coast increasing from northwest to southeast; therefore, the Xolapa sliver is supposed to be stretched. However, the slip vector azimuths of thrust subduction earthquakes tend to approach plate convergence vectors southeastwards along the coast; so, we assume that this may produce the forearc block compression. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Seismogenic width in the Guerrero-Oaxaca subduction zone of Mexico

Martínez-López

Mendoza

2022

Journal of South American Earth Sciences

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Seismic patterns of the Guerrero-Oaxaca, Mexico region, and its relationship to the continental margin structure

Cited by 11 publications

References 18 publications

Statistical Analysis of Natural Water Conductivity Data Behavior in Two Wells: Seismic Coastal Border Limits of Guerrero-Oaxaca States, Mexico

Statistical Analysis of Natural Water Conductivity Data Behavior in Two Wells: Seismic Coastal Border Limits of Guerrero-Oaxaca States, Mexico

Activity of crustal faults and the Xolapa sliver motion in Guerrero–Oaxaca forearc of Mexico, from seismic data

Seismogenic width in the Guerrero-Oaxaca subduction zone of Mexico

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