16 research outputs found
Contribuciones al estudio de los sistemas hidrotermales submarinos someros en MĂ©xico.
Los sistemas hidrotermales submarinos someros son aquellos localizados en profundidades menores a 200 m, con claras diferencias de los sistemas profundos y generalmente relacionados con actividad volcĂĄnica, pero en MĂ©xico se han reportado sistemas hidrotermales someros relacionados a procesos de extensiĂłn tectĂłnica, ubicados en Punta Mita, BahĂa ConcepciĂłn y Punta Banda. En este artĂculo se realiza una revisiĂłn bibliogrĂĄfica de artĂculos cientĂficos centrados en el estudio de sistemas hidrotermales submarinos someros de MĂ©xico, localizados en bases de datos multidisciplinarias, las cuales contienen artĂculos cientĂficos de alta calidad. A nivel mundial, MĂ©xico se ubica en la antepenĂșltima posiciĂłn de 24 paĂses, con respecto a la publicaciĂłn de artĂculos cientĂficos de sistemas hidrotermales someros, a pesar de que el primer artĂculo se publicĂł en 1978, el 93.75% de las publicaciones corresponden al perĂodo 2000-2017. Mientras que las lĂneas de investigaciĂłn dominantes son geoquĂmica y geotermia, con el 62.5% y 25%, respectivamente.The shallow-water submarine hydrothermal systems are those located in depths less than 200 m, with clear differences of the deep-sea systems and generally related to volcanic activity, but in Mexico there have been reported shallow-water hydrothermal systems related to tectonic extension processes, located in Punta Mita, BahĂa ConcepciĂłn and Punta Banda. In this paper, a bibliographic review of scientific papers focused on the study of shallow-water hydrothermal systems of Mexico is carried out, downloaded of multidisciplinary databases, which contain high-quality scientific papers. Worldwide, Mexico is in the second-to-last position of 24 countries, with respect to the publications of papers on shallow-water hydrothermal systems, despite the fact that the first paper was published in 1978, the 93.75% of the total publications occurs in the period 2000-2017. The dominant research lines are geochemistry and geothermal, with 62.5% and 25%, respectively.Los sistemas hidrotermales submarinos someros son aquellos localizados en profundidades menores a 200 m, con claras diferencias de los sistemas profundos y generalmente relacionados con actividad volcĂĄnica, pero en MĂ©xico se han reportado sistemas hidrotermales someros relacionados a procesos de extensiĂłn tectĂłnica, ubicados en Punta Mita, BahĂa ConcepciĂłn y Punta Banda. En este artĂculo se realiza una revisiĂłn bibliogrĂĄfica de artĂculos cientĂficos centrados en el estudio de sistemas hidrotermales submarinos someros de MĂ©xico, localizados en bases de datos multidisciplinarias, las cuales contienen artĂculos cientĂficos de alta calidad. A nivel mundial, MĂ©xico se ubica en la antepenĂșltima posiciĂłn de 24 paĂses, con respecto a la publicaciĂłn de artĂculos cientĂficos de sistemas hidrotermales someros, a pesar de que el primer artĂculo se publicĂł en 1978, el 93.75% de las publicaciones corresponden al perĂodo 2000-2017. Mientras que las lĂneas de investigaciĂłn dominantes son geoquĂmica y geotermia, con el 62.5% y 25%, respectivamente
Technological and infrastructure collaborative seismic research in Western Mexico
In February and March 2014, Spanish, Mexican and British scientists
and technicians explored the western margin of Mexico, a region with a high occurrence
of large earthquakes (> Mw = 7.5) and tsunami generation, on board the
British Royal Research Ship James Cook. This successful joint cruise, named TSUJAL,
was made possible thanks to a cooperative agreement between NERC and CSIC as
part of the Ocean Facilities Exchange Group (OFEG), a major forum of European
oceanographic institutions for the exchange of ship time, equipment and personnel.
A dense geophysical data set was acquired using for the first time 6 km length
seismic streamer facilities from Spainâs Consejo Superior de Investigaciones Cientificas
(CSIC), usually operating in the Spanish RV Sarmiento de Gamboa, onboard
the British RRS James Cook by solving all mechanical, electrical and electronic
problems. The RRS James Cook in turn provides the seismic source and the acoustic,
hullmounted echosounder operated by the British Natural Environment Research
Council (NERC). Multiscale seismic and echosounder images unravel the subduction
geometry, nature of the crust, and evidence faults and mass wasting processes. The
data are crucial to estimating fault seismic parameters, and these parameters are
critical to carrying out seismic hazard in Mexico, especially when considering largemagnitude
earthquakes (Mw 8.0), and to constrain tsunami models.Peer Reviewe
Source Model of the October 9, 1995 Jalisco-Colima Tsunami as constrained by field survey reports, and on the numerical simulation of the tsunami
En este trabajo se modela la fuente sĂsmica del tsunami de Jalisco-Colima del 9 de octubre de 1995 ajustando los resultados del modelo numĂ©rico del tsunami para reproducir adecuadamente las alturas de inundaciĂłn del tsunami documentadas in situ durante los trabajos de reconocimiento del ĂĄrea afectada por el tsunami. La fuente sĂsmica corresponde a un sismo de magnitud MwâŒ8.0 con un ĂĄrea de ruptura A = 9000 km2, L = 150 km, W = 60 km, con dislocaciĂłn cosĂsmica heterogĂ©nea: dislocaciĂłn de 1 m en los primeros 60 km a lo largo del plano de falla iniciando en el extremo NW, mar adentro frente a Chalacatepec y Chamela, y dislocaciĂłn de 3 m en los restantes 90 km, mar adentro frente a Tenacatita, Navidad y Manzanillo. Como se esperaba, la fuente sĂsmica obtenida en este estudio es un modelo simplificado en comparaciĂłn con la obtenida invirtiendo datos sĂsmicos y de GPS. Sin embargo, el hecho de que este modelo simplificado reproduzca aproximadamente la dislocaciĂłn cosĂsmica y el ĂĄrea de ruptura y su localizaciĂłn, es importante para validar la fuente sĂsmica de aquellos tsunamis histĂłricos de los que Ășnicamente se cuenta con algunos testimonios y relatos vagos de sus efectos y de los cuales no existen registros sĂsmicos ni del nivel del mar.
doi: https://doi.org/10.1016/j.gi.2015.04.01
Study of Seismic Clusters at BahĂa de Banderas Region, Mexico
La costa de Jalisco y el sur de Nayarit es una regiĂłn con un fuerte desarrollo turĂstico donde el incremento en la poblaciĂłn es grande y se encuentran en una zona de alto potencial sĂsmico. Esto motivĂł a las autoridades de ProtecciĂłn Civil de Jalisco y la Universidad de Guadalajara a iniciar en el año 2000 estudios para evaluar el riesgo sĂsmico en la regiĂłn. Este trabajo se enfocĂł en el estudio de la sismicidad en el ĂĄrea de BahĂa de Banderas y la costa norte de Jalisco, ĂĄrea considerada un Gap SĂsmico. Se realizĂł un anĂĄlisis de los sismogramas disponibles para identificar estructuras corticales activas, su relaciĂłn con la morfologĂa superficial y la posible prolongaciĂłn de estas estructuras a la parte somera de la bahĂa. Los datos utilizados en el presente trabajo son los registrados en el año 2003 cuando se desplegĂł una red sĂsmica en la regiĂłn. El mĂ©todo estĂĄ basado en la identificaciĂłn de acumulaciones sĂsmicas o familias usando correlaciĂłn-cruzada de los sismogramas, relocalizaciĂłn de sismos y modelado de planos de falla. A partir de un conjunto inicial de 404 sismos localizados, se seleccionaron 96 sismos con ML < 3.6 que estĂĄn relacionados con 17 estructuras continentales potencialmente activas. Se obtuvo un modelo del plano de falla para 11 estructuras. Un subgrupo de 7 estructuras se encuentra alineado paralelamente a la trinchera mesoamericana, lo cual puede ser una consecuencia de un proceso de subducciĂłn oblicuo. Los focos de los sismos se agruparon en acumulaciones sĂsmicas que se pueden correlacionar con fallas con dimensiones de cientos de metros, Ă©stas pueden ser consideradas como asperezas o barreras en estructuras tectĂłnicas con longitudes entre 10 y 30 km. Estas estructuras pueden generar terremotos someros con magnitudes entre 5.0 y 6.0, y representan una amenaza sĂsmica adicional en la regiĂłn.
doi: https://doi.org/10.1016/S0016-7169(13)71462-
Contributions to the study of shallow-waters submarine hydrothermal systems in Mexico
Los sistemas hidrotermales submarinos someros son aquellos localizados en profundidades menores a 200 m, con claras diferencias de los sistemas profundos y generalmente relacionados con actividad volcĂĄnica, pero en MĂ©xico se han reportado sistemas hidrotermales someros relacionados a procesos de extensiĂłn tectĂłnica, ubicados en Punta Mita, BahĂa ConcepciĂłn y Punta Banda. En este artĂculo se realiza una revisiĂłn bibliogrĂĄfica de artĂculos cientĂficos centrados en el estudio de sistemas hidrotermales submarinos someros de MĂ©xico, localizados en bases de datos multidisciplinarias, las cuales contienen artĂculos cientĂficos de alta calidad. A nivel mundial, MĂ©xico se ubica en la antepenĂșltima posiciĂłn de 24 paĂses, con respecto a la publicaciĂłn de artĂculos cientĂficos de sistemas hidrotermales someros, a pesar de que el primer artĂculo se publicĂł en 1978, el 93.75% de las publicaciones corresponden al perĂodo 2000-2017. Mientras que las lĂneas de investigaciĂłn dominantes son geoquĂmica y geotermia, con el 62.5% y 25%, respectivamente.The shallow-water submarine hydrothermal systems are those located in depths less than 200 m, with clear differences of the deep-sea systems and generally related to volcanic activity, but in Mexico there have been reported shallow-water hydrothermal systems related to tectonic extension processes, located in Punta Mita, BahĂa ConcepciĂłn and Punta Banda. In this paper, a bibliographic review of scientific papers focused on the study of shallow-water hydrothermal systems of Mexico is carried out, downloaded of multidisciplinary databases, which contain high-quality scientific papers. Worldwide, Mexico is in the second-to-last position of 24 countries, with respect to the publications of papers on shallow-water hydrothermal systems, despite the fact that the first paper was published in 1978, the 93.75% of the total publications occurs in the period 2000-2017. The dominant research lines are geochemistry and geothermal, with 62.5% and 25%, respectively
Granulometric Analysis of Shallow Vents Sediments at Banderas Bay (Mexico)
Ocean hydrothermal activity is well known from deep-sea studies; however, few studies have been reported at shallow depth. A shallow submarine hydrothermal system at Punta Mita described in 2000 was studied to determine the grain size classification of the marine sediments of this hydrothermal system. Three sites with hydrothermal activity were included. Each one was divided into three areas: with hydrothermal activity, intermediate, and out of hydrothermal activity. In each area, two sediment cores were randomly collected by scuba diving (number of sediment cores = 18). All sediment samples were subjected to a previous treatment, to eliminate salts and organic matter. The grain sizes were sieved and then classified following the Udden–Wentworth scale. A principal coordinate analysis was performed to determine if there was any association of the statistical moments with the areas and sites of study. The textural composition of the sediments in the hydrothermal influence areas is sand, where the very fine sand is the dominant grain size, which was confirmed with the mean moment. The sediments are characteristic of the tidal areas, except for those sediments in the areas with hydrothermal activity
Study of seismic activity at Ceboruco Volcano (Nayarit, Mexico) in the period 2012 to 2014
Corrigendum to âStudy of seismic activity at Ceboruco Volcano (Nayarit, Mexico) in the period 2012 to 2014â [J. S. Am. Earth Sci. 98 March (2020). doi.org/10.1016/j.jsames.2019.102473] Journal of South American Earth Sciences, Volume 103, November 2020, Pages 102565Ceboruco volcano is a stratovolcano located in western central Mexico within the state of Nayarit. Ceboruco volcano is one of the active volcanoes of the Trans-Mexican Volcanic Belt and lies within the Tepic-Zacoalco Rift structure. Eruptions at Ceboruco volcano have been reported over the last 1000 years with eruptions every 126 years on average, with the most recent eruption occurring in 1870. Current activity at Ceboruco volcano is primarily fumarolic emissions. Continued population and socio-economic growth around the volcano over the last 20 years, make urgent the need to study Ceboruco volcano. Previous investigations of seismicity classified the recorded earthquakes into four families using waveform and spectral features. In this paper, we present a seismicity study from March 2012 to July 2014 using four portable seismic stations within the context of the regional stress and structures near Ceboruco volcano. Of the 489 volcanic earthquakes recorded during this time period, only 33 could be located using P- and S-wave arrivals registered at least three stations. The P- and S-phase arrival times were obtained using particle motion. The epicentral distribution of these earthquakes is around the volcanic edifice along three structural lineaments with preferred ENE-WSW orientations, roughly perpendicular to Tepic-Zacoalco Rift and, following the youngest deformation pattern. Hypocentral depths locate within first 10Â km, indicating the earthquakes are a result of local tectonic stresses, intrusions into the magma chamber, or both.SecretarĂa de EnergĂa Mexico-Consejo Nacional de Ciencia y TecnologĂa (SENER-CONACYT)Consejo Nacional de Ciencia y TecnologĂa (MĂ©xico)Depto. de FĂsica de la Tierra y AstrofĂsicaFac. de Ciencias FĂsicasTRUEpu