Cristian Araya-Cornejo

Cristian Araya-Cornejo
Pontificia Universidad Católica de Chile | UC · Instituto de Geografía

Geographer, MSc. in Environmental Management, PhD Student

About

20
Publications
5,714
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
104
Citations

Publications

Publications (20)
Research
Full-text available
Turbidites of one of the sub-basins of the Riñihue lake show that a proximal zones can be as sensitive to record evidence of earthquakes as the distal zones. Five cores were extracted in a proximal zone and were correlated chronostratigraphically with three others obtained previously in the distal zone. Two types of turbidites were observed: i) exc...
Conference Paper
Full-text available
This paper presents the geomorphological evolution of larger slide generated by the 1960 earthquake, which dammed the San Pedro River, which was known locally as "Taco" 3. First, a geological and geomorphological characterization of the slide was made for years 1960 and 2010. After a comparative analysis between two topographic profiles obtained of...
Conference Paper
Full-text available
The relationships between beach ridge plain and superimposed coastal dunes are studied in La Trinchera erg, Maule region, by means of surface geomorphology, drilling and sedimentary analysis. The underlying strand plain is composed by a set of multiple beach ridges, which represents a prograded shore plain. The superimposed dunes have been formed i...
Conference Paper
Full-text available
The giant 1960 earthquake, with a 1000 km-long rupture, between the Nazca and South American plates, triggered three landslides damming the channel of the San Pedro River near the mouth of the Riñihue Lake during two months (named “tacos” 1, 2 and 3). Such damming implied a serious threat for the human downstream settlements, including Valdivia cit...
Poster
The 2018 Palu tsunami contributed significantly to the devastation caused by the associated Mw 7.5 earthquake. The tsunami event led to a debate about how the moderate size earthquake triggered such a large tsunami within Palu Bay, with runups of more than 10 m. The possibility of a large component of vertical coseismic deformation and submarine la...
Preprint
Full-text available
We present evidence that suggests a new risk scenario for the Valdivia basin in south Chile, located in the area of the magnitude 9.5 1960 earthquake. In 1960, three mass movements, triggered by the earthquake shaking, dammed the upper course of the San Pedro River and threatened Valdivia City until it was opened in a controlled manner by its inhab...
Article
Full-text available
Plain Language Summary Tsunami hazard assessment is routinely based on assessing the impacts of long‐period waves generated by vertical seafloor motions reaching the coast tens of minutes after the earthquake in typical subduction‐zone environments. This view is inadequate for assessing hazard associated with strike‐slip earthquakes such as the mag...
Article
Subduction zone seismicity arises from megathrust, crustal, and intraslab earthquakes, and understanding the recurrence patterns of each type is crucial for hazard assessments. Lake sediments can record earthquakes from all three seismogenic sources. Here, we studied the turbidite record of Lo Encañado, an Andean lake located in central Chile. We s...
Chapter
Full-text available
Los Campos de Hielo Patagónico Sur corresponden a un territorio con grandes glaciares, que se ubican en plena cordillera Andina Patagónica. Tienen una superficie de 13.900 km², de los cuales tres cuartos pertenecen a Chile y constituye el reservorio de agua dulce más grande del hemisferio sur. Su valor para la vida es trascendente ya que es un fact...
Presentation
Full-text available
Mediante el análisis de imágenes satelitales se pudo identificar y caracterizar las consecuencias del meteotsunami ocurrido en Chile el 8 de agosto de 2015, en los litorales arenosos de Concón y la Bahía de Quintero. El meteotsunami generó efectos inmediatos, tales como el retroceso de la línea litoral; la erosión de antedunas; angostamiento de bar...
Conference Paper
Full-text available
One of the main challenges in seismically active regions is differentiating paleo-earthquakes resulting from different fault systems, such as the megathrust versus intraplate faults in subductions settings. Such differentiation is, however, key for hazard assessments based on paleoseismic records. Laguna Lo Encañado (33.7�S; 70.3�W; 2492 m a.s.l.)...
Article
Full-text available
The analysis of satellite images together with field observations, allowed the identification and description of the geomorphological consequences of the Chilean tsunami of 2010 in La Trinchera. La Trinchera is a sandy coastline located in front of the area of the earthquake's maximum slip. The tsunami opened breaches and built fans in beach ridges...
Conference Paper
Full-text available
Turbidites of one of the sub-basins of the Riñihue lake show that a proximal zones can be as sensitive to record evidence of earthquakes as the distal zones. Five cores were extracted in a proximal zone and were correlated chronostratigraphically with three others obtained previously in the distal zone. Two types of turbidites were observed: i) exc...
Conference Paper
Full-text available
The tsunami of 27 February 2010 that affected the coast of central Chile produced significant changes in the coastline of the Maule region. Some of these changes have been recorded in the geomorphology of sandy coastline between the Mataquito and Huenchullami rivers, named locally as "La Trinchera". The retreat of the coastline, the destruction of...

Network

Cited By

Projects

Project (1)
Project
Caracterizar los efectos geomorfológicos de los eventos climáticos extremos recientes (ej. agosto de 2015), en los litorales arenosos de Chile Central, y evaluar las nuevas potenciales amenazas para la población e infraestructura crítica localizada en el borde costero.