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Page 1. Física ele la 'Tierra 155N: 02144557 1998, u.' 10: 111-147 Sismotectónica de Co... more Page 1. Física ele la 'Tierra 155N: 02144557 1998, u.' 10: 111-147 Sismotectónica de Colombia: deformación continental activa y subducción A. TABOADA ',C. DIMATÉ 2 y A. FUENZALIDA Departamento de Ingeniería Civil. ...
Abstract Several kilometric scale landslides in monocline structures are observed in the Western ... more Abstract Several kilometric scale landslides in monocline structures are observed in the Western Foothills belt of Taiwan (Tsao-Ling and Chiu-Fen-Er-Shan). These slides have been triggered by rainfall and/or earthquake during the 20th century. Sliding occurs along the bedding generating rock avalanches downslope. Field studies allow to describe the precise geological structure and rock compositions in these monoclines. Discrete numerical models are used to calculate the dynamic landslide process taking into consideration the ...
By means of a numerical biaxial experiment we determined the relationship between the microscopic... more By means of a numerical biaxial experiment we determined the relationship between the microscopic and the macroscopic behavior law of a sample composed of compact granular material with fixed texture (size distribution). The modeling technique is contact dynamics, which may be applied to large sets of particles. The mechanical interaction between particles is given by a contact law, which considers
The Tauramena (Colombia) earthquake, Mw = 6.5, occurred the 19 January, 1995 in the Andean Easter... more The Tauramena (Colombia) earthquake, Mw = 6.5, occurred the 19 January, 1995 in the Andean Eastern Cordillera Foothill region, the so-called Piedemonte Llanero. The Harvard's CMT focal mechanism indicates an almost pure inverse fault rupture. There was no surface rupture associated to this earthquake. A field expedition to the epicentral area was organized and a temporary portable network was installed
Lecture Notes in Earth Sciences, 2010
The Tsao-Ling rock avalanche was the largest landslide triggered by the 1999 Chi–Chi earthquake i... more The Tsao-Ling rock avalanche was the largest landslide triggered by the 1999 Chi–Chi earthquake in central Taiwan. In addition to detailed and extensive field observations, several Digital Elevation Models (DEMs) generated from sets of aerial photos have been utilized to document and measure the coseismic and post-seismic morphological changes at Tsao-Ling. The estimated volume of the initial rock avalanche is about 125.5 and 138 Mm3 for the depleted and accumulated zones, respectively, indicating an increase in volume due to fragmentation. The average thickness was about 150–170 m, up to 195 m of the slid mass–over 140 m on the Chingshui River channel while between 30 and 90 m debris covered on the preexisting debris deposit hill. The landslide debris blocked the river channel and formed a dammed lake, with a maximum volume of 45 Mm3. In the deposit area, strong river erosion has removed 72 Mm3 of the debris since the earthquake. By August 2004, the rockslide-dammed lake had filled up completely with sediment. The filling materials originated in numerous landslides in the upstream area.
We study granular materials characterized by the possibility of interlocking between the particle... more We study granular materials characterized by the possibility of interlocking between the particles. The Interlocking is modeled as the combined effect of sliding and rolling resistance at the contacts, and it involves two contact parameters: a coefficient of sliding friction and a coefficient of rolling friction. This model is introduced within the framework of the Contact Dynamics method, and it
Engineering Geology for Society and Territory - Volume 4, 2014
Page 1. Física ele la 'Tierra 155N: 02144557 1998, u.' 10: 111-147 Sismotectónica de Co... more Page 1. Física ele la 'Tierra 155N: 02144557 1998, u.' 10: 111-147 Sismotectónica de Colombia: deformación continental activa y subducción A. TABOADA ',C. DIMATÉ 2 y A. FUENZALIDA Departamento de Ingeniería Civil. ...
Abstract Several kilometric scale landslides in monocline structures are observed in the Western ... more Abstract Several kilometric scale landslides in monocline structures are observed in the Western Foothills belt of Taiwan (Tsao-Ling and Chiu-Fen-Er-Shan). These slides have been triggered by rainfall and/or earthquake during the 20th century. Sliding occurs along the bedding generating rock avalanches downslope. Field studies allow to describe the precise geological structure and rock compositions in these monoclines. Discrete numerical models are used to calculate the dynamic landslide process taking into consideration the ...
By means of a numerical biaxial experiment we determined the relationship between the microscopic... more By means of a numerical biaxial experiment we determined the relationship between the microscopic and the macroscopic behavior law of a sample composed of compact granular material with fixed texture (size distribution). The modeling technique is contact dynamics, which may be applied to large sets of particles. The mechanical interaction between particles is given by a contact law, which considers
The Tauramena (Colombia) earthquake, Mw = 6.5, occurred the 19 January, 1995 in the Andean Easter... more The Tauramena (Colombia) earthquake, Mw = 6.5, occurred the 19 January, 1995 in the Andean Eastern Cordillera Foothill region, the so-called Piedemonte Llanero. The Harvard's CMT focal mechanism indicates an almost pure inverse fault rupture. There was no surface rupture associated to this earthquake. A field expedition to the epicentral area was organized and a temporary portable network was installed
Lecture Notes in Earth Sciences, 2010
The Tsao-Ling rock avalanche was the largest landslide triggered by the 1999 Chi–Chi earthquake i... more The Tsao-Ling rock avalanche was the largest landslide triggered by the 1999 Chi–Chi earthquake in central Taiwan. In addition to detailed and extensive field observations, several Digital Elevation Models (DEMs) generated from sets of aerial photos have been utilized to document and measure the coseismic and post-seismic morphological changes at Tsao-Ling. The estimated volume of the initial rock avalanche is about 125.5 and 138 Mm3 for the depleted and accumulated zones, respectively, indicating an increase in volume due to fragmentation. The average thickness was about 150–170 m, up to 195 m of the slid mass–over 140 m on the Chingshui River channel while between 30 and 90 m debris covered on the preexisting debris deposit hill. The landslide debris blocked the river channel and formed a dammed lake, with a maximum volume of 45 Mm3. In the deposit area, strong river erosion has removed 72 Mm3 of the debris since the earthquake. By August 2004, the rockslide-dammed lake had filled up completely with sediment. The filling materials originated in numerous landslides in the upstream area.
We study granular materials characterized by the possibility of interlocking between the particle... more We study granular materials characterized by the possibility of interlocking between the particles. The Interlocking is modeled as the combined effect of sliding and rolling resistance at the contacts, and it involves two contact parameters: a coefficient of sliding friction and a coefficient of rolling friction. This model is introduced within the framework of the Contact Dynamics method, and it
Engineering Geology for Society and Territory - Volume 4, 2014