Programa Fondecyt Informe Final Etapa 2016 Comisión

PROGRAMA FONDECYT

INFORME FINAL

ETAPA 2016

COMISIÓN NACIONAL DE INVESTIGACION CIENTÍFICA Y TECNOLÓGICA

VERSION OFICIAL

FECHA: 09/03/2017

Nº PROYECTO : 1140317 DURACIÓN : 3 años AÑO ETAPA : 2016 TÍTULO PROYECTO : DYNAMIC RESPONSE AND STABILITY OF LARGE ROCK SLOPES DURING EARTHQUAKES

DISCIPLINA PRINCIPAL : INGENIERIA GEOTECNICA Y AFINES GRUPO DE ESTUDIO : INGENIERIA 1 INVESTIGADOR(A) RESPONSABLE : SERGIO ANDRES SEPULVEDA VALENZUELA DIRECCIÓN : COMUNA : CIUDAD : REGIÓN : METROPOLITANA

FONDO NACIONAL DE DESARROLLO CIENTIFICO Y TECNOLOGICO (FONDECYT) Moneda 1375, Santiago de Chile - casilla 297-V, Santiago 21 Telefono: 2435 4350 FAX 2365 4435 Email: [email protected] INFORME FINAL PROYECTO FONDECYT REGULAR

MODIFICACIONES ACADÉMICAS

Nuevas Solicitudes para Evaluación Nº Solicitudes para Evaluación El informe no presenta solicitudes.

Otros Aspectos Importantes a Considerar 1. En junio de 2014 una vez firmado el convenio se solicitó un cambio de objetivos y metodología, el cual fue aceptado por el grupo de estudio. Se adjunta documentación en Anexos.2. En el año 3 (2016) hubo una sustantiva reducción de gastos en el ítem viajes. Esto producto que se decidió cancelar viaje a congreso EUROCK en Turquía en agosto 2016, por las dudosas condiciones de seguridad a pocas semanas del intento de golpe de Estado y atentados terroristas en ese país. Solo se pagó la inscripción al congreso para asegurar la publicación del artículo enviado. Los fondos liberados fueron esencialmente utilizados en pagar a todos los estudiantes tesistas y memoristas que participaron del proyecto, por su meritorio aporte. PROJECT RESULTS:

Describe the results of your research in reference to its original and/or modified Project objectives.

The maximum extension of this section is 5 pages (Arial or Verdana font, size 10).

Objectives & Scope

The general goal of the project was to expand the understanding of the dynamic behavior of large rock slopes during earthquakes and to identify and characterize those factors controlling co- seismic slope instability.

The specific proposed goals were: 1. To model the response of discontinuous rock slopes under seismic loading for different earthquake types and failure modes. 2. To identify morphological, geotechnical and geological factors leading to slope instabilities during the 2010, interplate Maule earthquake (Mw 8.8) in the Arauco peninsula. 3. To verify the occurrence of topographic site effects on a large rock slide triggered by the 2007, shallow intraplate Aysén earthquake (Mw 6.2). 4. To verify the co-seismic origin of a prehistoric large rock slide in the Santiago Cordillera. 5. To identify the relative contribution of rock structure, geotechnical properties and slope geometry (2D) on site effects and slope stability during earthquakes.

The original 3D slope stability scope of the project was modified due to the cut in the original requested budget in nearly 40%, thus it was not possible to buy the 3DEC software. This was approved by Fondecyt (see appendix). Nevertheless, as an addition to the 2D project goals, cheaper software RAMMS-Debris Flow was acquired to get into the 3D modelling of rock avalanches and flows induced by the large slope failures subject of this project.

Project Team and Thesis students

The project was developed in close link with Conicyt-NERC Newton Fund project NE/ N000315/1 “Seismically-induced landslides in Chile: New tools for hazard assessment and disaster prevention”, led by the P.I., which shares study sites in Aysen fjord, Arauco peninsula and Maipo valley, although at a broader scale. This meant that some of the fieldwork campaigns were carried out together and some student theses contributed to both projects objectives.

The project team included the P.I. (S. Sepúlveda), Co-investigators (C. Pastén, G. Montalva) and the following students (and their study topics): 1. Manuel García (MSc., Fondecyt): Dynamic numerical modelling of Co. Catedral landslide (Santiago cordillera) with UDEC. 2. Sebastián Moya (MSc., Fondecyt and Newton): Arauco peninsula 2010 landslide inventory and geotechnical testing. 3. José Quiroz (MSc., Fondecyt): Arauco peninsula landslide seismic site characterization and modelling. 4. Constanza Celis (MSc, Newton and Fondecyt): Landslide susceptibility assessment and rock avalanche-debris flows modelling with RAMMS in the Santiago cordillera. 5. Ignacio Escudero (undergraduate, Fondecyt): Dynamic numerical modelling of Punta Cola rock slide (Aysen) with UDEC 6. Marcela Vollmer (undergraduate, Fondecyt): Numerical modelling with RAMMS of the Punta Cola rock avalanche.

The group also counted with technical collaboration by geologist MSc Marisol Lara for technical support and student supervision as well as outreach material preparation, and geologist MSc Alejandra Serey, Newton project PhD student, and geologist MSc Eleonora Muñoz, in fieldwork and outreach activities. Newton fund project investigators G. De Pascale, W. Murphy, D. Petley, M. Brain and M. Froude as well as Fondecyt international collaboration researchers also took part of field campaigns.

Scientific Results

An extensive bibliographic review on landslides in Chile in the last decade was carried out at the start of the project in order to identify their main geographic distribution and triggers. Those with fatal consequences were included in the continental-scale research by Sepúlveda and Petley (Natural Hazards and Earth System Sciences, 2015). This analysis was followed by the confection of a full landslide inventory of the 2010 Maule earthquake, a specific objective of the Newton Fund project. This Fondecyt project contributed with the detailed mapping of the Arauco peninsula (36°45’ - 37°10’ S), where the highest concentration of landslides was detected. This work was part of Moya MSc thesis. An inventory of the events based on satellite images and field work was performed. 126 landslides were identified, including rock slides, soil slides, rockfalls and rock avalanches. The landslides are concentrated near the towns of Punta Lavapie and Tubul in Neogene soft sedimentary units, mainly sandstones and siltstones, suggesting a lithologic control. A major rockslide in Tubul was selected for obtention of samples to geotechnical testing using a back-pressure shear box (part of Newton Fund project). The results have been presented in four conferences (CPMSIG, CGCh, ISL, WCEE) and are part of a journal paper about to be submitted (Moya et al. in prep.). The results of the geotechnical tests of the Tubul landslide were also used as inputs for Quiroz MSc thesis.

In order to characterize in detail a rock slope in which a co-seismic rockslide occured in Tubul, three different type of measurements were made in field (Quiroz MSc thesis). First, a combination of passive and active geophysical exploration methods were performed at the base using 4 triaxial seismometers of 4.5 Hz Eigen frequency. The purpose of the base measurement is to obtain a 1D shear wave velocity profile in order to be able to create a synthetic record of the Maule earthquake at the site. Secondly, to obtain a three-dimensional shear wave velocity tomography, a series of consecutive small aperture arrays were deployed along the edge of the slope using 5 synchronized seismometers. In total, 17 synchronized measurements of ambient vibrations were made along the slope. The length of each measurement was around 2 hours. Finally, two broadband seismometers, with an Eigen period of 120 seconds, were installed at the top and bottom of the hillslope in order to obtain the natural frequency of the structure. The recording time of this last measurement was around two and a half hours.

The natural frequency of the slope structure was found to be on average 0.12 Hz, which is considerably low, however low values were expected according to a prior numerical model of the slope, slope dimensions and rock quality. The estimation was made using two similar techniques, HVSR (Horizontal to Vertical Spectral Ratio) and HHSR (Horizontal to Horizontal Spectral Ratio), having the same result, but clearer in HVSR, which shows the simplicity and robustness of the phenomena. This should allow a better dynamic response characterization in forward analyses, by matching global behavior retrieved from the Eigen frequencies of the system. Based on HVSR of measurements with tomography purpose we cannot establish directivity effects on the slope in its current condition, and neither potentially unstable zones, however the evidence confirms the fact that the medium is highly heterogeneous. Regarding shear wave velocity structure the retrieved heterogeneities from HVSR can also be detected from phase velocity dispersion curves, for which, especially in high frequencies [5-15 Hz] show significant variations among them. The results evidence a shear wave velocity structure that is strongly variable, both lateral and in depth for the weathered rock closest to the surface, which varies from 150 to 650 m/s. Particularly for natural hillslopes, there are not many experiences using the recent methodologies here applied, where we believe heterogeneities must be characterized and included in the analysis to appropriately assess seismic risk. These findings have been presented in three conferences (ISL, Sochige, WCEE).

Initial numerical models of the Tubul slide show that within the hillslope and up to the surface, the maximal spectral amplitude increases on average in a factor of 2.0 when considering inner heterogeneities, meanwhile for the free surface of the landslide the response increases in approximately 78%. Considering cumulative absolute velocity (CAV), which is a more stable and reliable parameter, the initial factor is modified up to 2.2, and the second one remains practically at the same value. Results show the relevance of shear wave velocity structure on the dynamic response of a hillslope, amplifying the seismic signal and redistributing stresses within.

Part of this methodology was implemented by co-PI Montalva for the study of different sites affected by the 2015 Illapel earthquake in northern Chile and other case studies, resulting in a contribution for the journal paper by Candia et al. (Earthquake Spectra, 2017), an international conference (LASC), and will be promptly submitted to an ISI journal (Montalva et al., in prep) in its full version.

The dynamic analysis of large, hard rock slope failures was developed studying a relatively simple stepped-planar rockslide at Co. Catedral site in Santiago cordillera (Garcia MSc thesis) and then applied in a preliminary manner for the much more complex Punta Cola rockslide in Aysen (Escudero thesis).

In Garcia thesis, LIDAR scanning was used to reconstruct the topography of the ancient Co Catedral rockslide in Central Chile and was used to build a representative 2D numerical distinct- element model using the software UDEC. The geometry that represents the entire slide is characterized as a two flats and two ramps alternate sequence (Fig 1). Field surveys allowed gathering structural data from the landslide and geotechnical tests of the Jurassic sedimentary rock samples provided strength and elastic moduli data. Results from the numerical modeling indicate that the slope is statically unstable when an open joint system with Barton and Bandis constitutive model and elasto-plastic rock mass are considered. In addition, it is shown that a rock-bridge is required to ensure the slope static stability. Further dynamic simulations show that the seismic response of the slope is controlled by the peak ground acceleration and peak velocities of seismic records compatible to shallow crustal earthquakes, such as the Northridge, Chi Chi and Kobe earthquakes, which records were used for the analyses. The acceleration threshold was found to be highly sensitive to the rock bridge tensile strength. The dynamic analyses also indicate a site amplification with a factor >2. The results of this study suggest that the ancient rock slope failure may have been controlled by earthquakes compatible with the seismic sources nearby the Maipo Valley, in a combined frictional sliding- rock bridges breaking failure mechanism. These results have been presented in three conferences (CGCh, ISL, EUROCK) and will be promptly submitted to an ISI journal (Garcia et al., in prep).

Fig 1. Lidar scan, failure surface cross section, and scheme of the UDEC model with indication of logging points for displacement and accelerations at Co Catedral rockslide (García et al. 2016 and García, 2016)

Similarly, the Aysen fjord Punta Cola rockslide (ca. 22 Mm3) was statically and dynamically modeled using the software UDEC (Escudero undergraduate thesis) applying the knowledge acquired in the former research. In this case, as the slope and failure surface geometries are irregular and complex, without a distinct discontinuity control as in Co. Catedral, a combined strength criteria of Hoek-Brown for the granitic rock mass and Mohr-Coulomb for the main discontinuities and faults was applied. Geotechnical and topographic data from former LIDAR scans were used. This rockslide was triggered in the epicentral area during the 2007 Mw 6.2 earthquake, with no local instrumental records. For the dynamic analysis, records of similar shallow, strike-slip earthquake taken at very short epicentral distances from the California 2004 Parkfield earthquake were used. Results show amplification of the order of two (horizontal and vertical) toward the slope crest, confirming the hypothesis by Sepúlveda et al. (2010) and Serey (2011), and a segmentation of the slide in two main bodies that would be controlled by the presence of a fault that crosses the landslide body, which is consistent with former geological interpretations (Oppikofer et al. 2012). This thesis is due to be finished in April 2017 and the results would be combined with the rock avalanche models at the same site (Vollmer thesis) for a publication. Both works with UDEC showed limitations in the introduction of rock jointing in the dynamic models, due to an exponential increase of time needed to run the models. Nevertheless, it proved to be a useful tool for co-seismic analysis of hard rock slopes with different failure criteria and mechanisms.

The undergraduate thesis by Vollmer, also due in April 2017, focused on the trial of numerical modelling software RAMMS-Debris Flow, originally developed by Swiss researchers to simulate the runout of muddy and debris-laden flows in complex terrain, using the Voellmy-fluid friction model. In our case, we test it for simulation of the large Punta Cola rock avalanche. The results show that while the large size of the avalanche produce some inaccuracies in volume calculations, the run ups and deposits distribution can be reproduced with reasonable precision (Fig. 2). These results and the physical parameters used for the avalanche model will be compared with debris flow and rock avalanches modelling with the same software in the Santiago cordillera, which is part of Celis MSc thesis (due in late 2017). In this work, modelling of debris flows that endanger the urban area of Santiago are being modelled with RAMMS, using the 1993 deadly flow event for calibration.

Fig 2. Punta Cola rock avalanche runout models (evolution in time) with RAMMS (Vollmer, 2017)

International Collaboration Results

International collaboration was carried out with the Geological Survey of Norway (NGU) and Conicet research center in Argentina. NGU specialist Freddy Yugsi conducted in January 2015 photogrammetric (terrestrial and airborne with a drone acquired by the project) surveys of landslides sites in Arauco peninsula (Tubul) and Santiago cordillera (Co. Catedral). These data were taken for the detailed terrain models of the sites necessary for the numerical models performed by the project team.

NGU specialists Reginald Hermanns and Ivanna Penna conducted in January 2016 a Terrestrial Laser Scanning (TLS) and photogrammetric survey of the Punta Cola and Mentirosa rockslides in Aysen fjord, intended to produce detailed topographic data on the sites where large slope collapses took place in the 2007 earthquake. The Punta Cola rockslide was scanned from different locations between the headscarp and the distal (in subaerial sector) part of the rockslide deposit. 60 scans were done. The TLS dataset were processed by the NGU researchers. The unified and georeferenced point cloud from 2010 (Oppikofer et al., 2012) was used as a base to georeference the scans from 2016. TLS point clouds were used to produce two 25 cm resolution DEMs. An analysis on post 2010 terrain deformation was carried out. Samples for Cosmogenic Nuclide dating samples were taken in the field to be analyzed out of NGU budget. These are processed at present and no results are available yet.

In the case of Mentirosa rockslides, a photogrammetric survey was conducted with picture taken both from a boat along the fjord and from a helicopter (provided by Newton Fund project). Around 200 pictures allowed to build a photogrammetric model of the site.

A preliminary result of the erosion analysis in Punta Cola was presented at ISL conference in 2016 (Sepúlveda et al., 2016). A paper focused on the evolution (erosion and reactivations) of rockslides deposits in time and their role as source of sediments delivered to the fjords including a test of the TCN technique on very recent events is under preparation (Penna et al., in prep.).

In 2016, Conicet landslide researchers Stella Moreiras and Sebastian Junquera visited the P.I. and project students to share and discuss research methodologies and results of large rock slope failures in the Mendoza and San Juan provinces in Argentina, suspected to be induced by shallow earthquakes. These failures have similar characteristics with those of Santiago cordillera, therefore this collaboration will aid better interpretation of the model results from our project and vice versa. This collaboration resulted in an accepted conference paper (WLF 2017), a submitted abstract (CGA 2017) and a journal paper in preparation (Junquera et al. in prep).

Outreach

Project outreach activities were carried out in Year 3 of the Project, and included talks in schools and preparation and dissemination of scientific material for teaching. The talks and material focused on the effects of earthquakes on the landscape and how may affect the local communities.

Three talks were given as part of the Explora “1000 cientificos-1000 aulas” scheme in October 2016 in Coyhaique, Concepción and Rengo. Two talks titled “Peligros Geológicos en la Región de Aysén” were given at Alianza Austral school in October 25th and 26th to 3º Medio and 4º Básico levels, respectively by local geologist MSc Eleonora Muñoz, who collaborated and took part of the fieldwork campaign in Aysen fjord in early 2016. The talk included material provided by the P.I. and explanation of the Aysen fjord case study. Furthermore, the P.I. gave a talk on October 17th at Liceo Industrial of Rengo, O´Higgins region, titled “Remociones en masa: qué son y cómo nos afectan”, to 1º Medio students, and Co-PI Montalva gave a talk in Carmela Romero de Espinoza school about soil response during earthquakes.

Additionally, a digital teaching material for school teachers on geological hazards with emphasis on earthquake effects such as landslides or liquefaction was prepared by geologist Marisol Lara and the PI. The material consists on a Powerpoint lecture with photos and videos, along with a Teacher Guide with an explanation of every slide, background knowledge and guidance for the lecture. This material was offered to a number of shools in the municipalities of Puerto Aysen, Arauco and San Jose de Maipo, where the project study sites are located, and distributed to eleven schools and the Education Direction of Arauco. Further details are provided in annexes and the “Informe de Difusión” part of this report.

Final Remarks

This Project allowed an advance in the understanding of earthquake-induced rock slope failures, from their geotechnical, geological and seismological perspectives. It involved about 15 researchers, including 6 students and 5 international collaborators. The engineering geological nature of the project, including field mapping, sampling, field data processing, laboratory testing, etc. as inputs for the modelling, produced some delays in obtaining the final results and thus the submission of all projected journal papers before the project finish date. Nevertheless, presentation of preliminary results in over 10 international conferences show the capability of producing a large amount of data to be published in the short term in at least three or four journal papers, on top of two already published articles with contributions from the project.

COOPERACIÓN INTERNACIONAL

Nº Proyecto: 1140317 Nombre Colaborador (a) Extranjero (a): STELLA MARIS MOREIRAS Afiliación Institucional Actual: UNIVERSIDAD NACIONAL DE CUYO Fechas de estadía Desde :20/12/2016 Hasta :23/12/2016

Nº Proyecto: 1140317 Nombre Colaborador (a) Extranjero (a): SEBASTIAN JUNQUERA Afiliación Institucional Actual: CONSEJO NACIONAL DE INVESTIGACIONES CIENTIFICAS Y TECNICAS Fechas de estadía Desde :13/07/2016 Hasta :15/07/2016

Nº Proyecto: 1140317 Nombre Colaborador (a) Extranjero (a): IVANNA PENNA Afiliación Institucional Actual: NORWEGIAN GEOLOGICAL SURVEY Fechas de estadía Desde :03/01/2016 Hasta :09/01/2016

Describa las actividades realizadas y resultados obtenidos. Destaque su contribución al logro de los objetivos del proyecto. Si es pertinente, indique las publicaciones conjuntas generadas, haciendo referencia a lo informado en la etapa Productos. Agregue en la etapa anexos la información necesaria. Campaña de terreno al fiordo Aysén (junto con Reginald Hermanns también del Norwegian Geological Survey). Adquisición de datos fotogramétricos, geomorfológicos y geológicos en terreno, y escaneo láser con TLS (Lidar), de avalanchas de rocas sector Isla Mentirosa y Punta Cola, generadas por el terremoto del fiordo Aysén de 2007. Resultados se mostraron preliminarmente en International Symposium on Landslides (Nápoles, junio 2016) y se prepara publicación en que se comparan los datos adquiridos en 2016 con levantamiento Lidar de 2010 de la misma zona, en que se interpreta evolución de la estabilidad post-sísmica de las laderas y fenómenos de erosión.

PRODUCTOS

ARTÍCULOS Para trabajos en Prensa/ Aceptados/Enviados adjunte copia de carta de aceptación o de recepción. Nº : 1 Autor (a)(es/as) : Candia G; De Pascale GP; Montalva G; Ledezma C Nombre Completo de la Revista : Earthquake Spectra Título (Idioma original) : Geotechnical aspects of the 2015 Mw 8.3 Illapel megathrust earthquake sequence in Chile Indexación : ISI ISSN : Año : Vol. : Nº : Páginas : Estado de la publicación a la fecha : Aceptada Otras Fuentes de financiamiento, si las hay : CONICYT/FONDAP/ 15110017, FONDAP CONICYT 15090013, FONDAP/15130015, FONDECYT 11110125, CONICYT USA2012-0007

Envía documento en papel : no Archivo(s) Asociado(s) al artículo :

Camdia_et_al_Decision_Letter.pdf http://sial.fondecyt.cl/index.php/investigador/f4_articulos/descarga/10938881/1140317/2016/92153/2/

2017_Candia_et_al_in_press.pdf http://sial.fondecyt.cl/index.php/investigador/f4_articulos/descarga/10938881/1140317/2016/92153/3/

Nº : 2 Autor (a)(es/as) : Sepulveda SA; Petley DN Nombre Completo de la Revista : Natural Hazards and Earth System Sciences Título (Idioma original) : Regional trends and controlling factors of fatal landslides in Latin America and the Caribbean Indexación : ISI ISSN : Año : 2015 Vol. : 15 Nº : Páginas : 1821-1833 Estado de la publicación a la fecha : Publicada Otras Fuentes de financiamiento, si las hay : NERC/ESCR NE/J01995X/1, NERC/NewtonFund grant NE/N000315

Envía documento en papel : no Archivo(s) Asociado(s) al artículo : Sepulveda___Petley_nhess_2015.pdf http://sial.fondecyt.cl/index.php/investigador/f4_articulos/descarga/10938881/1140317/2016/92159/1/

OTRAS PUBLICACIONES / PRODUCTOS Sin información ingresada.

CONGRESOS

Nº : 1 Autor (a)(es/as) : Sepulveda SA; Farías V; Farías M Título (Idioma original) : Megalandslides in the Tarapacá Region, northern Chile: A consequence of crustal fault active tectonics? Nombre del Congreso : 3rd Slope Tectonics Conference País : NORUEGA Ciudad : Trondheim Fecha Inicio : 08/09/2014 Fecha Término : 12/09/2014 Nombre Publicación : Proceedings 3rd Slope Tectonics Conference Año : 2014 Vol. : 1 Nº : 1 Páginas : Envía documento en papel : no Archivo Asociado : Sepulveda_et_al_2014_Slope_Tectonics.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/146041/1/

Nº : 2 Autor (a)(es/as) : Sepulveda SA; Petley DN Título (Idioma original) : Short term patterns of landslides in Latin America and the Caribbean Nombre del Congreso : American Geophysical Union Fall Meeting País : ESTADOS UNIDOS DE AMERICA Ciudad : San Francisco Fecha Inicio : 14/12/2015 Fecha Término : 18/12/2015 Nombre Publicación : Proceedings American Geophysical Union Fall Meeting Año : 2015 Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Sepulveda_Petley_AGU2015.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/146042/1/ Nº : 3 Autor (a)(es/as) : Moya S; Sepúlveda SA; Serey A; Montalva G; Yugsi F; Orostegui P; García M; Quiroz J; Pastén C Título (Idioma original) : Geomorphological and geotechnical analysis of landslides induced by the Maule earthquake 2010 in the Arauco Peninsula, Chile Nombre del Congreso : XV Congreso Panamericano de Mecánica de Suelos e Ingeniería Geotécnica País : ARGENTINA Ciudad : Buenos Aires Fecha Inicio : 15/11/2015 Fecha Término : 18/11/2015 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Moya_et_al_PANAM_2015.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/146043/1/

Nº : 4 Autor (a)(es/as) : Moya S; Sepúlveda SA; Serey A; García M Título (Idioma original) : Remociones en masa generadas por el terremoto del Maule de 2010 en la Península de Arauco Nombre del Congreso : XIV Congreso Geológico Chileno País : CHILE Ciudad : La Serena Fecha Inicio : 04/10/2015 Fecha Término : 08/10/2015 Nombre Publicación : Actas XIV Congreso Geológico Chileno Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Moya_et_al_CGCH_2015.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/146044/1/

Nº : 5 Autor (a)(es/as) : García M; Sepúlveda S; Moya S; Pastén C; Montalva G Título (Idioma original) : Dynamic numerical analysis of a stepped-planar rock slide in central Chile - Preliminary results Nombre del Congreso : EUROCK 2016 ISRM International Symposium País : TURQUIA Ciudad : Capadocia Fecha Inicio : 29/08/2016 Fecha Término : 31/08/2016 Nombre Publicación : Rock Mechanics and Rock Engineering: From the Past to the Future Año : 2016 Vol. : Nº : Páginas : 653-658 Envía documento en papel : no Archivo Asociado : Garcia_et_al_EUROCK_2016.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/146045/1/

Nº : 6 Autor (a)(es/as) : Sepúlveda SA; Pastén C; Moya S; García M; Lara M; Montalva G; Quiroz J; Hermanns R; Yugsi F; Oppikofer T; Penna I Título (Idioma original) : Site investigation and modeliling of earthquake-induced rock slides in central-southern Chile Nombre del Congreso : International Symposium on Landlides País : ITALIA Ciudad : Napoles Fecha Inicio : 12/06/2016 Fecha Término : 19/06/2016 Nombre Publicación : Landslides and Engineered Slopes. Experience, Theory and Practice Año : 2016 Vol. : Nº : Páginas : 1823-1828 Envía documento en papel : no Archivo Asociado : Sepulveda_et_al_ISL_2016.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/146050/1/

Nº : 7 Autor (a)(es/as) : Quiroz, J; Montalva G; Sepúlveda S; Moya S; Pastén C; García M Título (Idioma original) : Improved site characterization for improved seismic analysis of rock slopes Nombre del Congreso : IX Congreso Chileno de Ingeniería Geotécnica País : CHILE Ciudad : Valdivia Fecha Inicio : 05/12/2016 Fecha Término : 07/12/2016 Nombre Publicación : Actas IX Congreso Chileno de Ingeniería Geotécnica Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Quiroz_et_al_Sochige__2016.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/147313/1/

Nº : 8 Autor (a)(es/as) : García M; Sepúlveda S; Pastén C; Moya S Título (Idioma original) : Numerical Modelling of seismically-induced landslides using UDEC: A case study at Lo Valdés, Cajón del Maipo, Chile Nombre del Congreso : XIV Congreso Geológico Chileno País : CHILE Ciudad : La Serena Fecha Inicio : 04/10/2015 Fecha Término : 08/10/2015 Nombre Publicación : Actas XIV Congreso Geológico Chileno Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Article_Garcia_et_al_2015_CGCh.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/147314/1/

Nº : 9 Autor (a)(es/as) : Serey, A; Escobar P; Moya S; Sepúlveda SA; Petley D Título (Idioma original) : Landslide inventory of the 2010 Mw 8.8 Maule earthquake, Central Chile Nombre del Congreso : 16th World Conference on Earthquake Engineering País : CHILE Ciudad : Santiago Fecha Inicio : 09/01/2017 Fecha Término : 13/01/2017 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Serey_et_al_2017_WCEE.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/147315/1/

Nº : 10 Autor (a)(es/as) : Montalva G; Quiroz J; Sepúlveda S; Moya S; Pastén C; García M Título (Idioma original) : Improved site cahracterization for improved seismic analysis of rock slopes Nombre del Congreso : 16th World Conference on Earthquake Engineering País : CHILE Ciudad : Santiago Fecha Inicio : 09/01/2017 Fecha Término : 13/01/2017 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Montalva_et_al_2017_WCEE.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/147316/1/

Nº : 11 Autor (a)(es/as) : Drouet S; Castillo L; Dimate C; Fernandez G: Montalva G; Morales C; Pirchiner M; Singaucho J; Weatherill G Título (Idioma original) : Building a ground motion prediction equations dataset for PSHA analysis in South America within the GEM-SARA project framework Nombre del Congreso : IASPEI Asamblea Regional Comisión Latinoamericana y del Caribe de Sismología País : COSTA RICA Ciudad : San José Fecha Inicio : 20/06/2016 Fecha Término : 22/06/2016 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Drouet_et_al_LASC_2016.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/147317/1/

Nº : 12 Autor (a)(es/as) : Junquera S; Moreiras SM; Sepúlveda SA Título (Idioma original) : Huge slope collapses flashing the Andean active orogenic front Nombre del Congreso : 4th World Landslide Forum País : ESLOVENIA Ciudad : Ljubljana Fecha Inicio : 29/05/2017 Fecha Término : 02/06/2017 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Aceptacion_WLF_20171.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/147644/1/

Junquera_et_al_WLFO.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/147644/2/

Nº : 13 Autor (a)(es/as) : Sepúlveda SA; Moreiras SM Título (Idioma original) : NUEVAS EVIDENCIAS DEL COMPLEJO DE AVALANCHAS DEL PANGAL, CUENCA DEL RÍO CACHAPOAL, CHILE Nombre del Congreso : Congreso Geológico Argentino País : ARGENTINA Ciudad : Tucumán Fecha Inicio : 07/08/2017 Fecha Término : 11/08/2017 Nombre Publicación : Año : Vol. : Nº : Páginas : Envía documento en papel : no Archivo Asociado : Sepulveda_Moreiras__CGA_2017.pdf http://sial.fondecyt.cl/index.php/investigador/f4_congresos/descarga/10938881/1140317/2016/148796/1/

TESIS/MEMORIAS

Nº : 1 Título de Tesis : COMPORTAMIENTO MONOTÓNICO Y CÍCLICO DE SUELOS Y ROCAS BLANDAS AFECTADOS POR REMOCIONES EN MASA COSÍSMICAS Nombre y Apellidos del(de la) Alumno(a) : Sebastián Moya Vargas Nombre y Apellidos del(de la) Tutor(a) : Sergio Sepúlveda Valenzuela Título Grado : Magister Institución : Universidad de Chile País : CHILE Ciudad : Santiago Estado de Tesis : Terminada Fecha Inicio : 02/03/2015 Fecha Término : 28/12/2016 Envía documento en papel : no Archivo Asociado : Resumen_Tesis_Moya.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/72656/1/ Cert_Grado_Sebastian_Moya.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/72656/2/

Nº : 2 Título de Tesis : ANÁLISIS DINÁMICO DE UN DESLIZAMIENTO TRASLACIONAL DE ROCA PROVOCADO POR ACCIÓN SÍSMICA MEDIANTE EL USO DE ELEMENTOS DISCRETOS Nombre y Apellidos del(de la) Alumno(a) : Manuel García Hurtado Nombre y Apellidos del(de la) Tutor(a) : César Pastén Puchi Título Grado : Magister Institución : Universidad de Chile País : CHILE Ciudad : Santiago Estado de Tesis : Terminada Fecha Inicio : 09/03/2015 Fecha Término : 28/12/2016 Envía documento en papel : no Archivo Asociado : Certificado_grado_Manuel_Garcia.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/72657/1/ Resumen_Tesis_Garcia.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/72657/2/ Nº : 3 Título de Tesis : Determinación de zonas de peligro potencial asociado a la generación de remociones en masa en el frente cordilleranode Santiago Nombre y Apellidos del(de la) Alumno(a) : Constanza Celis Sáez Nombre y Apellidos del(de la) Tutor(a) : Sergio Sepúlveda Valenzuela Título Grado : Magister Institución : Universidad de Chile País : CHILE Ciudad : Santiago Estado de Tesis : En Ejecución Fecha Inicio : 01/08/2016 Fecha Término : Envía documento en papel : no Archivo Asociado : Cert_C_Celis1.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/73214/1/ Cert_C_Celis_2.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/73214/2/ Resumen_Celis.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/73214/3/

Nº : 4 Título de Tesis : Modelamiento computacional de la avalancha de roca del 21 de abril del 2007 en Punta Cola, región de Aysén Chile Nombre y Apellidos del(de la) Alumno(a) : Marcela Vollmer Quintullanca Nombre y Apellidos del(de la) Tutor(a) : Sergio Sepúlveda Título Grado : Pregrado Institución : Universidad de Chile País : CHILE Ciudad : Santiago Estado de Tesis : En Ejecución Fecha Inicio : 01/08/2016 Fecha Término : Envía documento en papel : no Archivo Asociado : Cert_M_Vollmer.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/73215/1/ Resumen_memoria_Vollmer.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/73215/2/

Nº : 5 Título de Tesis : Dynamic response of large rock slopes Nombre y Apellidos del(de la) Alumno(a) : José Quiroz Olmos Nombre y Apellidos del(de la) Tutor(a) : Gonzalo Montalva Alvarado Título Grado : Magister Institución : Universidad de Concepción País : CHILE Ciudad : Concepción Estado de Tesis : En Ejecución Fecha Inicio : 04/09/2015 Fecha Término : Envía documento en papel : no Archivo Asociado : Certificado_JQO_UdeC_MsC.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/73216/1/ Resumen_Quiroz.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/73216/2/

Nº : 6 Título de Tesis : Modelamiento dinámico mediante elementos discretos del deslizamiento de roca de Punta Cola generado por el terremoto del fiodo Aysén de 2007 Nombre y Apellidos del(de la) Alumno(a) : Ignacio Escudero Véliz Nombre y Apellidos del(de la) Tutor(a) : Marisol Lara Castillo Título Grado : Pregrado Institución : Universidad de Chile País : CHILE Ciudad : Santiago Estado de Tesis : En Ejecución Fecha Inicio : 01/08/2016 Fecha Término : Envía documento en papel : no Archivo Asociado : Cert_memoria_Escudero.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/73234/1/ Resumen_PuntaCola_Escudero.pdf http://sial.fondecyt.cl/index.php/investigador/f4_tesis_memorias/descarga/10938881/1140317/2016/73234/2/

ANEXOS

Nº : 1 Archivo Asociado : Anexo_cambio_metodologia_2014.pdf http://sial.fondecyt.cl/index.php/investigador/f5_anexos/descarga/10938881/1140317/2016/73143/

Nº : 2 Archivo Asociado : Clase_Digital_TERREMOTOS_Y_EFECTOS.pdf http://sial.fondecyt.cl/index.php/investigador/f5_anexos/descarga/10938881/1140317/2016/73144/

Nº : 3 Archivo Asociado : Guia_para_el_profesor_TERREMOTOS_Y_EFECTOS.pdf http://sial.fondecyt.cl/index.php/investigador/f5_anexos/descarga/10938881/1140317/2016/73145/

Nº : 4 Archivo Asociado : cert_Explora_1000_cient_Sergio_Sepulveda_Valenzuela.pdf http://sial.fondecyt.cl/index.php/investigador/f5_anexos/descarga/10938881/1140317/2016/73146/

Nº : 5 Archivo Asociado : Portadas_EM_Aysen_Explora.pdf http://sial.fondecyt.cl/index.php/investigador/f5_anexos/descarga/10938881/1140317/2016/73147/

Nº : 6 Archivo Asociado : portada_SS_Rengo_Explora.pdf http://sial.fondecyt.cl/index.php/investigador/f5_anexos/descarga/10938881/1140317/2016/73148/

Nº : 7 Archivo Asociado : Resumen_Difusion_1140317.pdf http://sial.fondecyt.cl/index.php/investigador/f5_anexos/descarga/10938881/1140317/2016/73149/

A continuación se detallan los anexos físicos/papel que no se incluyen en el informe en formato PDF.