Geofisica Internacional最新文献_第8页

The divide-and-conquer framework: a suitable setting for domain decomposition methods of the future 分而治之的框架:未来领域分解方法的合适设置

IF 0.4 4区地球科学

Geofisica Internacional Pub Date : 2020-01-01 DOI: 10.22201/IGEOF.00167169P.2020.59.1.2078

Ismael Herrera-Revilla, Iván Contreras, G. Herrera

引用次数: 0

An intraslab earthquake at a depth of 100 km in the subducting Cocos plate beneath Nevado de Toluca volcano 内华达·德·托卢卡火山下俯冲的科科斯板块在100公里深处发生的一次岩内地震

IF 0.4 4区地球科学

Geofisica Internacional Pub Date : 2020-01-01 DOI: 10.22201/IGEOF.00167169P.2020.59.1.2072

S. K. Singh, X. Pérez‐Campos, V. Espíndola, A. Iglesias, L. Quintanar

引用次数: 1

Hydrogeochemical characterization and quantification of the groundwater mixture in a hydrogeological basin of the middle zone of San Luis Potosí 圣路易斯中部水文地质盆地混合地下水的水文地球化学表征与定量研究Potosí

IF 0.4 4区地球科学

Geofisica Internacional Pub Date : 2019-10-01 DOI: 10.22201/igeof.00167169p.2019.58.4.2056

Silvano Andrés Torres Rivera, J. A. Ramos-Leal, J. Ramírez, J. R. T. Hernández, L. Sánchez, Simón Eduardo Carranco Lozada, M. E. García-Arreola

{"title":"Hydrogeochemical characterization and quantification of the groundwater mixture in a hydrogeological basin of the middle zone of San Luis Potosí","authors":"Silvano Andrés Torres Rivera, J. A. Ramos-Leal, J. Ramírez, J. R. T. Hernández, L. Sánchez, Simón Eduardo Carranco Lozada, M. E. García-Arreola","doi":"10.22201/igeof.00167169p.2019.58.4.2056","DOIUrl":"https://doi.org/10.22201/igeof.00167169p.2019.58.4.2056","url":null,"abstract":"Los procesos de caracterización hidrogeoquímica e interacción agua-roca en las subcuencas de Santa Catarina y Ocampo-Paraíso en la Zona Media de San Luis Potosí han permitido identificar los tipos de aguas subterráneas. Los resultados del análisis químico y el estudio geológico regional han permitido documentar los posibles mecanismos de interacción del agua con la roca. Los resultados indican que la composición del agua subterránea en cada una de estas cuencas refleja la disolución por el agua de lluvia de los minerales de carbonato y magnesio de las rocas carbonatadas de la formación del Cretácico (Formación El Abra del Cretácico) y del flujo subterráneo a través de un medio granular con fuerte influencia del material de origen volcánico. Las aguas del tipo Ca-HCO?, Ca-Mg-HCO? se modifican durante el flujo subterráneo mediante la incorporación de iones Na+ y SO?²?. En el caso de la subcuenca III de San Nicolás, se ha documentado que su relleno incluye depósitos fluviales que pueden depositarse en condiciones climáticas de regiones semiáridas. El análisis hidrogeoquímico de las concentraciones de iones mayores, litio y bromo, permitieron identificar que el agua que se extrae de la región es producto de un proceso de mezcla en la que intervienen tres miembros extremos (mezcla ternaria): El primero, Santa Catarina (C?), tiene las concentraciones más bajas de bromo y litio en la recarga ocurre en las partes de mayor altitud en la región, hacia la Sierra de Álvarez. El segundo miembro (C?), tiene valores altos del bromo, bajo en litio y se origina hacia el valle de Ocampo Paraíso. El tercer miembro (C?), tiene bajas concentraciones de bromo, alto en litio y proviene de área de San Nicolás Tolentino. Los porcentajes de mezcla indican que C?, aporta el 50%, C? contribuye con el 31% y C? aporta 19 %, del agua al sistema.","PeriodicalId":12624,"journal":{"name":"Geofisica Internacional","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68166759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Metodología para el cálculo de acelerogramas sintéticos utilizando funciones de transferencia empíricas y el método estocástico de Boore, en la ciudad de Tapachula, Chiapas 在恰帕斯的塔帕丘拉市使用经验传递函数和随机布尔方法计算合成加速度图的方法

IF 0.4 4区地球科学

Geofisica Internacional Pub Date : 2019-07-01 DOI: 10.22201/igeof.00167169p.2019.58.3.2061

René Solano Bahena, Jorge Aguirre

{"title":"Metodología para el cálculo de acelerogramas sintéticos utilizando funciones de transferencia empíricas y el método estocástico de Boore, en la ciudad de Tapachula, Chiapas","authors":"René Solano Bahena, Jorge Aguirre","doi":"10.22201/igeof.00167169p.2019.58.3.2061","DOIUrl":"https://doi.org/10.22201/igeof.00167169p.2019.58.3.2061","url":null,"abstract":"El principal objetivo de este artículo es estimar los acelerogramas sintéticos de un sismo de magnitud 7.3 en la Ciudad de Tapachula, Chiapas, ocurrido el 7 de noviembre de 2012 en las costas de Guatemala. En este trabajo, se combinaron los métodos de las Funciones de Transferencia Empíricas y el Método Estocástico de Boore (1983, 2003), que es útil para simular los movimientos del terreno de alta frecuencia (f>0.1 Hz), lo cual es de mucho interés en el campo de la ingeniería (Boore, 2003). Para comprobar el grado de ajuste entre los acelerogramas obtenidos con el método utilizado en este artículo, se utilizaron las métricas propuestas por Anderson (2004). Para ello, se realizaron pruebas con acelerogramas conocidos registrados en una red temporal (instalada durante el periodo del 15 de junio al 29 de julio de 2011, en la Ciudad de Tapachula), y se compararon con los resultados sintéticos obtenidos tras aplicar el método mencionado. Para la simulación de un sismo de M=4.7, ambas componentes horizontales muestran buenos ajustes en la mayoría de las estaciones donde fue registrando. Es decir, el método aquí propuesto logra aproximarse mucho a los datos reales grabados en cada una de las estaciones. Esto respalda la confianza que tenemos en la gran utilidad que este método tiene para generar aplicaciones de interés en la ingeniería sísmica.","PeriodicalId":12624,"journal":{"name":"Geofisica Internacional","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48908095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Generator of genetic seismic signals 基因地震信号发生器

IF 0.4 4区地球科学

Geofisica Internacional Pub Date : 2019-07-01 DOI: 10.22201/igeof.00167169p.2019.58.3.2060

S. García, Leonardo Alcántara Nolasco

引用次数: 0

Subsidence and Morphologic Variations in Mexico City Generated by the Earthquakes of September 2017 2017年9月地震引发的墨西哥城下沉和地貌变化

IF 0.4 4区地球科学

Geofisica Internacional Pub Date : 2019-07-01 DOI: 10.22201/IGEOF.00167169P.2019.58.3.2062

J. Lira, M. Núñez

{"title":"Subsidence and Morphologic Variations in Mexico City Generated by the Earthquakes of September 2017","authors":"J. Lira, M. Núñez","doi":"10.22201/IGEOF.00167169P.2019.58.3.2062","DOIUrl":"https://doi.org/10.22201/IGEOF.00167169P.2019.58.3.2062","url":null,"abstract":"Dos terremotos ocurridos en el suroeste de México generaron hundimientos y cambios morfológicos en el área de la Ciudad de México. Para estudiar la subsidencia, se llevó a cabo un procedimiento interferométrico utilizando cuatro pares interferométricos adquiridos del radar del satélite Sentinel-1 en modo IW (Amplia Banda Interferométrica) TOPS (Observación del terreno mediante exploración progresiva) SLC (Complejo de aspecto simple) . Se generaron cuatro interferogramas y cuatro mapas de desplazamiento. Para cuantificar los cambios morfológicos, se consideró un sinergismo de las bandas de radar Sentinel-1 en el modo IW GRD (Rango de Tierra Detectado) considerando las bandas ópticas SPOT 6/7. El sinergismo consiste en una imagen híbrida formada por las bandas de radar y las bandas ópticas. El análisis de componentes principales se aplicó a las bandas de la imagen híbrida. Los primeros tres componentes se retuvieron, y luego se aplicó un operador de divergencia al campo vectorial formado por estos componentes, produciendo un mapa de textura. El mapa de textura se evaluó junto con el interferograma y el mapa de desplazamiento para los terremotos de septiembre de 2017. Los resultados indicaron un patrón complejo de hundimientos y cambios morfológicos. El interferograma y la subsidencia de septiembre de 2017 se correlacionaron con un mapa de daños por terremotos.","PeriodicalId":12624,"journal":{"name":"Geofisica Internacional","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43697141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Source parameters, focal mechanisms and stress tensor inversion from moderate earthquakes and its relationship with subduction Zone 中震源参数、震源机制、应力张量反演及其与俯冲带的关系

IF 0.4 4区地球科学

Geofisica Internacional Pub Date : 2019-04-01 DOI: 10.22201/IGEOF.00167169P.2018.58.2.1965

R. T. Domínguez, Héctor E. Rodríguez Lozoya, D. Reyes, L. Q. Robles, Armando Aguilar Meléndez, H. Leyva, J. M. L. Graciano

{"title":"Source parameters, focal mechanisms and stress tensor inversion from moderate earthquakes and its relationship with subduction Zone","authors":"R. T. Domínguez, Héctor E. Rodríguez Lozoya, D. Reyes, L. Q. Robles, Armando Aguilar Meléndez, H. Leyva, J. M. L. Graciano","doi":"10.22201/IGEOF.00167169P.2018.58.2.1965","DOIUrl":"https://doi.org/10.22201/IGEOF.00167169P.2018.58.2.1965","url":null,"abstract":"Nine earthquakes occured between 2005 and 2009, with magnitudes between 4.9 and 5.5, at the zone that correspond to the triple junction of the Cocos, Rivera and North America plates were relocated. Records from RESCO seismic stations were used together with records from SSN seismic network. Source parameters were estimated: source dimension, seismic moment, stress drop, average displacement and source time.The seismic moment tensor inversion was used to estimate focal mechanism and seismic moment to compare then whit short and long period estimation of these parameters.A stress tensor inversion was also performed in order to evaluate stress state of the area of study. The results indicate a compressive stress regime, which is characteristic of a subduction zone. It is interesting however, that plunge of ?1 goes from a moderate angle in the northwest to sub-horizontal in the southeast. The existence of normal and strike-slip mechanisms is also interesting in a subduction zone. Their existence was interpreted in terms of the interaction of Cocos and Rivera plates in this tectonically complicate zone.","PeriodicalId":12624,"journal":{"name":"Geofisica Internacional","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46739641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Hydraulic parameters evaluation of the Pan-African aquifer by applying an alternative geoelectrical approach based on vertical electrical soundings 应用基于垂直电测深的替代地电方法评价泛非含水层的水力参数

IF 0.4 4区地球科学

Geofisica Internacional Pub Date : 2019-04-01 DOI: 10.22201/IGEOF.00167169P.2018.58.2.1964

Z. Aretouyap, D. Bisso, J. L. Meli’i, P. N. Nouck, A. Njoya, J. Asfahani

{"title":"Hydraulic parameters evaluation of the Pan-African aquifer by applying an alternative geoelectrical approach based on vertical electrical soundings","authors":"Z. Aretouyap, D. Bisso, J. L. Meli’i, P. N. Nouck, A. Njoya, J. Asfahani","doi":"10.22201/IGEOF.00167169P.2018.58.2.1964","DOIUrl":"https://doi.org/10.22201/IGEOF.00167169P.2018.58.2.1964","url":null,"abstract":"The present article aims at determining hydraulic parameters of the Pan-African aquifer in the region of Adamawa-Cameroon, namely the transmissivity (T) and the hydraulic conductivity (K). For this, fifty vertical electrical soundings (VESs),including 14 performed near existing boreholes with known values of water resistivity, have been conducted in the region using the Terrameter ABEMSAS-1000 with a spacing of current electrodes (AB) varying from 2 to 600 m.The curve matching technique is used to set structural parameters then, an inverse technique algorithm fits both theoretical and field curves for each experimental. The transverse resistance TR and the transmissivity T for the interpreted 14 VES are computed, then used to establish two relationships: one between the modified transverse resistance (MTR) andthe transverse resistance (TR) and another between MTR and the transmissivity (T).This enabled to compute MTR (ranged from 1526 to 28209 ?.m² with an average of 7873 ?.m²),TR (ranged from 24 to 31350 ?.m² with an average of 7476 ?.m²), T (ranged from 4 to 17.4 m²/day with an average of 7.23 m²/day) and K (ranged from 0.07 to 0.74 m/day with an average of 0.31 m/day) values in the whole region. The approach used for this purpose is effective and exportable to other Pan-African regions in the world. ","PeriodicalId":12624,"journal":{"name":"Geofisica Internacional","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44382159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Geomagnetic anomalies in the area of Popocatepetl volcano, Mexico 墨西哥Popocatepetl火山区域的地磁异常

IF 0.4 4区地球科学

Geofisica Internacional Pub Date : 2019-04-01 DOI: 10.22201/IGEOF.00167169P.2018.58.2.1953

A. Kotzarenko, V. Yutsis, V. Grimalsky, S. Koshevaya, Yu. Kotsarenko

引用次数: 0

Coseismic displacements and Mw estimation of the El Mayor-Cucapah earthquake, Mexico, from GPS source spectra 基于GPS震源谱的墨西哥El Mayor-Cucapah地震同震位移和毫瓦估算

IF 0.4 4区地球科学

Geofisica Internacional Pub Date : 2019-04-01 DOI: 10.22201/IGEOF.00167169P.2018.58.2.1968

J. C. Robles-Avalos, J. González‐Ortega, J. González-García, J. A. Vidal-Villegas

{"title":"Coseismic displacements and Mw estimation of the El Mayor-Cucapah earthquake, Mexico, from GPS source spectra","authors":"J. C. Robles-Avalos, J. González‐Ortega, J. González-García, J. A. Vidal-Villegas","doi":"10.22201/IGEOF.00167169P.2018.58.2.1968","DOIUrl":"https://doi.org/10.22201/IGEOF.00167169P.2018.58.2.1968","url":null,"abstract":"El Mayor-Cucapah earthquake Mw 7.2 on April 4, 2010, occurred on Mexicali Valley near the international border between California, USA and Baja California, Mexico. The objective of this paper was to examine GPS as a complementary tool for seismic studies and to estimate earthquake seismic moment and Mw. For this purpose the capabilities of high-rate GPS (5 Hz) data located in the northern part of the seismic rupture has been explored to obtain the kinematic coseismic displacements. GPS data were processed using Precise Point Positioning method with GIPSY-OASIS II software, then applying the Fast Fourier Transform to the position time series, spectral parameters, seismic moment and Mw were calculated. A good agreement was found in terms of signal correlation of the GPS displacements, by comparing strong-motion seismic records integrated to displacement, using filtering parameters for two sets of instruments. Kinematic GPS displacement spectra clearly shows the low frequency displacement spectral level (~0.2 Hz) when compared with double integration of strong-motion data. It is easy to calculate the static coseismic motion from GPS data, however it is very difficult to calculate it from strong-motion data. A simple earthquake source model is suitable for the GPS dataset used in this work, estimated on Mw=7.19±0.13, was in according with Mw 7.2 obtained in other studies of the El Mayor-Cucapah earthquake. ","PeriodicalId":12624,"journal":{"name":"Geofisica Internacional","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42326031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2