Person: Rodríguez Peces, Martín Jesús
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First Name
Martín Jesús
Last Name
Rodríguez Peces
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Geológicas
Department
Geodinámica, Estratigrafía y Paleontología
Area
Geodinámica Interna
Identifiers
62 results
Search Results
Now showing 1 - 10 of 62
Item Advances and trends on earthquake-triggered landslide research in Spain(2009) García Mayordomo, Julián; Rodríguez Peces, Martín Jesús; Azañón, J.M.; Insua Arévalo, Juan MiguelThis work reviews the current situation of earthquake‐triggered landslide studies in Spain both from the point of view of regional assessment and site‐specific cases. Regional assessments have been undertaken in areas of the Betic Cordillera (South and Southeast Spain): Alcoy Basin, Lorca Basin, Granada Basin and Sierra Nevada Range; and Central Pyrenees (North Spain and Andorra). Specific studies are very scarce, outstanding those related to the Güevéjar landslide (Granada) –triggered by 1755 Lisbon and 1884 Arenas del Rey earthquakes, and to a remarkable rock‐slide triggered by 2005 La Paca earthquake (Murcia). Future research lines are appointed, as well as potential applications on Civil Protection and Seismic Hazard Assessment.Item ¿Pudo el deslizamiento de Dúdar (Granada, sur de España) haber sido causado por un terremoto reciente?(2011) Rodríguez Peces, Martín Jesús; Pérez Peña, José Vicente; Azañón, J.M.Item Ambient Noise Measurements to Constrain the Geological Structure of the Güevéjar Landslide (S Spain)(Applied Sciences, 2021) Delgado, José; Galiana Merino, Juan José; García-Tortosa, Francisco J.; Garrido, Jesús; Lenti, Luca; Martino, Salvatore; Peláez, José A.; Rodríguez Peces, Martín Jesús; Sanz De Galdeano-Equiza, Carlos; Soler Llorens, Juan L.The reactivation of very large landslides may cause severe damage to society. Its prevention and management requires detailed information on the geometry and structure of these landslides, but the use of standard techniques (boreholes) may be prohibitive from an economic point of view. To overcome these difficulties, geophysical techniques are of special interest because they allow for studying very large areas at a reasonable cost. In this paper, we present a case study wherein the analysis of ambient noise allowed us to produce a model of a large landslide near Granada (southern Spain). The geometry and location of the failure zone, as well as the assessment of the state of involved materials, were estimated by combining two available boreholes and different geophysical techniques (downhole tests and the spectral analysis of ambient noise, horizontal to vertical spectral ratios (HVSR) and the frequency-wavenumber (f-k) methods). The results have allowed us to differentiate between values within the landslide mass with respect to those of stable materials, and to perform for the first time a comprehensive geological model of this unstable mass. Differences were also observed within the landslide mass (earth flow vs. slide zones), which are attributed to differences in the degree of alteration and the disturbance of the internal structure of materials constituting the landslide mass. These results show that techniques based on the measurement of ambient noise are of special interest for studying very large, highly remolded landslide masses.Item Cylindrical Cavity Deformation of Jointed Anisotropic Rock Masses. Empirical Approach(Procedia Engineering, 2017) Muñiz Menéndez, Mauro; Perucho Martínez, Aurea; Rodríguez Peces, Martín Jesús; Cano Linares, H.Interpretations of cavity expansion tests (pressuremeter, radial jack, etc.) are based (in most occasions) on the analysis of the deformability of a cylindrical cavity in a continuous, isotropic, and homogeneous medium. However, many rock masses show an anisotropic behaviour due to the presence of discontinuity planes of different origins. Cavity expansion tests in these media have been studied here with an empirical approach. Several tests have been simulated in a three-dimensional, anisotropic and discontinuous medium—using 3DEC by Itasca—and their deformation has been analyzed in order to establish the principal factors that control the behaviour of the rock mass in these situations. Based on this analysis, it has been developed a new method for the interpretation of the cavity expansion tests carried out in laminated rock masses, which allows estimating the principal deformation moduli of the rock mass (maximum and minimum). This method can be used for any dip of the discontinuity planes.Item Evolución del deslizamiento de Pajonales (Depresión de Tirajana, Gran Canaria): un caso de reactivación parcial progresiva(Geotemas, 2016) Rodríguez Peces, Martín Jesús; Fonollá, C.; Yepes, J.Se ha estudiado la evolución de las distintas fases del deslizamiento de Pajonales (barranco de Tirajana, Gran Canaria), a partir de las características geotécnicas de los materiales volcánicos in situ y deslizados. Para ello, se recogieron muestras de piroclastos y suelos representativos de las masas deslizadas y se realizaron ensayos de identificación y resistencia al corte. Se ha reconstruido la morfología de la ladera previa al deslizamiento a partir de las superficies deslizadas y de los escarpes de primera y segunda generación. Mediante un programa de análisis del equilibrio límite se han identificado las superficies de rotura para cada una de las fases del deslizamiento. Estas superficies se han desarrollado a través de niveles limo-arcillosos, que son producto de la alteración de los materiales piroclásticos, y que presentan las propiedades geotécnicas más desfavorables (valores mínimos o residuales). Por otra parte, se verificó que la presencia de agua constituye un factor desencadenante del deslizamiento, ya que es necesaria la saturación total o parcial de los materiales. Por último, el deslizamiento es de tipo progresivo: a medida que se producen las sucesivas reactivaciones, las masas ya deslizadas se descomponen en otras más pequeñas que se desplazan, ladera abajo, hacia el centro del barranco.Item El deslizamiento de Bàlitx (Mallorca) y su posible origen sísmico. Procesos activos desde el Pleistoceno superior(Boletín geológico y minero, 2013) Mateos, R.M.; Rodríguez Peces, Martín Jesús; Azañón, J.M.; Rodríguez-Fernández, J.; Roldán, F.J.; García-Moreno, I.; Gelabert, B.; García Mayordomo, JuliánEl deslizamiento de Bàlitx, situado en el escarpado litoral de la Serra de Tramuntana de Mallorca es un gran deslizamiento rocoso traslacional, cuya superficie de rotura aprovecha un plano de falla normal preexistente. La datación de estrías de calcita sobre el plano de falla con U/Th pone de manifiesto que el último movimiento de la falla está fuera del rango de datación de este método (> 400 ka). El volumen de material movilizado por el deslizamiento se estima en unos 700 millones de metros cúbicos, con un desplazamiento de unos 300 m hacia el NO. Se han identificado procesos activos de apertura de grietas de tracción, con desplazamientos y desplomes de grandes bloques de roca procedentes del escarpe principal del deslizamiento, proceso cuyo inicio coincide con un máximo transgresivo hace 83 ka (Pleistoceno superior), correspondiente al estadio isotópico 5a (OIS 5a), constatado como más cálido y húmedo que el actual. En los materiales deslizados se han identificado grietas con longitudes decamétricas y aperturas de hasta 50 m, cuya generación y apertura continua en la actualidad, y que parecen poner de manifiesto la ruptura del bloque deslizado en varias unidades que se desplazan a distintas velocidades. Se ha realizado un análisis retrospectivo de la estabilidad, considerando varios escenarios posibles relacionados con posiciones críticas del nivel del mar. Los resultados ponen de manifiesto condiciones de estabilidad en todos los casos, con factores de seguridad >1.3, lo que avala la hipótesis de un posible origen sísmico del deslizamiento. El estudio en condiciones dinámicas pone de manifiesto que el deslizamiento de Bàlitx pudo ser provocado por un posible terremoto de magnitud moderada a alta (Mw≥6.0), localizado en las inmediaciones del deslizamiento (10-30 km), probablemente en relación con alguna de las fallas activas de Mallorca, como la de Palma.Item Evidence for surface uplift of the Atlas Mountains and the surrounding peripheral plateaux: Combining apatite fission-track results and geomorphic indicators in the Western Moroccan Meseta (coastal Variscan Paleozoic basement)(Tectonophysics, 2011) Barbero González, Luis C.; Jabaloy Sánchez, Antonio; Gómez Ortiz, David; Pérez Peña, José Vicente; Rodríguez Peces, Martín Jesús; Tejero López, Rosa; Estupiñán Letamendi, Jenny; Azdimousa, A.; Vázquez Vílchez, MercedesThis work represents an initial attempt to link the evolution of the topography in relation to the general tectonic framework of western Morocco. For this purpose, in a section of the Western Moroccan Meseta different tools are combined in order to attain the general objective. Apatite fission-track (AFT) data of granitic rocks of the Rabat–Khenifra area give ages around 200 Ma with track length distributions which are compatible with the thermal models already established for the area. An inverse correlation between AFT ages and elevation is observed which is compatible with previous models indicating northward tilting of the whole Western Moroccan Meseta which is younger than 20–25 Ma. In order to test this possibility a detailed analysis of the topography at different scales in the estern Moroccan Meseta has been performed. Results indicate that two open folds with different amplitudes are recognized and that the one with wider wavelength could correspond to a lithospheric fold as previously stated by other authors on the basis of independent geological arguments. The northward tilting proposed based on the AFT data agrees with the results obtained in the analysis of the topography which reinforces the presence of a very open fold with a wavelength of 200–300 km in the north-western limb of the Western Moroccan Meseta.Item Newmark displacement data for low to moderate magnitude events in the Betic Cordillera(Data in Brief, 2020) Delgado, José; Rosa, Julio; Peláez, José A.; Rodríguez Peces, Martín Jesús; Tsige Beyene, MeazaLand-use decisions in relation to seismic-induced landslide hazard are usually made through the preparation of hazard maps. The rigid-block method is probably the most used for this purpose. Under this method, Newmark displacement is computed for each slope unit and this displacement is used as a guide for establishing categories of hazard. At present, most relations used for computing Newmark displacement are established from moderate-to-high magnitude earthquakes (Mw ≥ 6.5). This data article provides Newmark displacements computed from accelerograms recorded in the Betic Cordillera for low-to-moderate magnitude earthquakes (Mw = 3.5–6.3). Records come from the Spanish Strong Ground Motion database (Instituto Geográfico Nacional). Newmark displacements were computed focusing on yield accelerations frequently recorded in such scenarios (0.02, 0.03, 0.04, 0.05, 0.06, 0.08 and 0.10), although higher accelerations were also considered (0.125, 0.15, 0.20, 0.25 and 0.30 g's). These data are useful for the study of the hazard in seismic scenarios of low-to-moderate magnitude, very frequent in practice. These data have been used in the study by Delgado et al.Item Correlaciones empíricas entre las clasificaciones geomecánicas RMR y Q en macizos rocosos volcánicos(Geotemas, 2016) Bonilla, Ángel; Quintana, Diana; Rodríguez Peces, Martín JesúsEn este trabajo se correlacionan las clasificaciones geomecánicas del RMR y la Q aplicadas en un macizo rocoso volcánico. Los datos necesarios para ello fueron obtenidos a partir de mapas geológicos, ensayos geofísicos, estaciones geomecánicas, sondeos, ensayos in situ y ensayos de laboratorio en los materiales volcánicos que atravesará el túnel Transcordillerano, localizado al sureste de Quito (Ecuador). Estas clasificaciones se han aplicado a cada una de las 8 unidades geotécnicas identificadas con objeto de establecer varias correlaciones empíricas entre el índice Q y el RMR, aplicables a diferentes rocas volcánicas. También se ha obtenido una correlación general para el conjunto de los materiales volcánicos presentes en el túnel Transcordillerano. En la mayoría de los casos se ha obtenido una buena correlación entre ambos parámetros (R2 > 60 %), lo que sugiere que estas expresiones se pueden utilizar aceptablemente para mejorar la caracterización de los macizos rocosos formados por este tipo de materiales volcánicos.Item The Quaternary Active Faults Database of Iberia (QAFI v.2.0)(Journal of iberian geology, 2012) García Mayordomo, Julián; Insua Arévalo, Juan Miguel; Martínez Díaz, José Jesús; Jiménez Díaz, Alberto; Martín Banda, Raquel; Martín Alfageme, Santiago; Álvarez Gómez, José Antonio; Rodríguez Peces, Martín Jesús; Pérez López, Raúl; Rodríguez Pascua, Miguel Angel; Masana Closa, Eulàlia; Perea, Héctor; Martín González, Fidel; Giner Robles, Jorge Luis; Cabral, JoaoThe Quaternary Active Faults Database of Iberia (QAFI) is an initiative lead by the Institute of Geology and Mines of Spain (IGME) for building a public repository of scientific data regarding faults having documented activity during the last 2.59 Ma (Quaternary). QAFI also addresses a need to transfer geologic knowledge to practitioners of seismic hazard and risk in Iberia by identifying and characterizing seismogenic fault-sources. QAFI is populated by the information freely provided by more than 40 Earth science researchers, storing to date a total of 262 records. In this article we describe the development and evolution of the database, as well as its internal architecture. Additionally, a first global analysis of the data is provided with a special focus on length and slip-rate fault parameters. Finally, the database completeness and the internal consistency of the data are discussed. Even though QAFI v.2.0 is the most current resource for calculating fault-related seismic hazard in Iberia, the database is still incomplete and requires further review.