Juan Gabriel Barros L.

National Polytechnic School | EPN · Instituto Geofísico

The city of Portoviejo in Ecuador, is located in the western region of the South American continent is one of the main active tectonic zones of the world, due to the convergence of the South-American and Nazca plates. The Jama-Pedernales earthquake (Mw = 7.8) of April 16, 2016, caused great damage, attributed to important site effects within the se...

The presence of multiscale interactions means that the complex urban wavefield must be observed and analyzed in order to understand seismic ground motion in urban environments. Originally called site–city interaction, the interactions between soil and structures, structures and soil, and between structures contribute to the modification of urban se...

On April 16, 2016, a large part of the Ecuadorian coast was shacked by an Mw7.8 earthquake, affecting nearly 30,000 homes and public buildings. Understanding soil characteristics of these affected areas is a necessary and useful aid to reconstruction efforts. To this end, the Instituto Geofísico at the Escuela Politécnica Nacional (IG-EPN) undertoo...

The faults present at Billecocha High Plateau (BHP) (Imbabura - Ecuador, Figure 1 - a) occur about 4000 meters above sea level (masl) in approximately four km wide by ten km long area (Figure 1 - b) in a nature reserve. These faults have been classified as a Normal Fault System [1,2], although the processes responsible still remain in discussion. N...

Quito, the capital city of Ecuador, with a population close to three million inhabitants, is located in an earthquake-prone region that has been struck by important events in the past. The city is built on the hanging wall of an active reverse fault, constituting a piggy-back basin filled with volcanic and fluvial origin deposits. To date, the Quit...

Geometry of the interplate subduction contact based on active seismic data): Determining the geometry of the shallow interplate contact (CI) in the Ecuadorian subduction (0-25 km) is a primary objective to understand the processes of deformation of the subduction zone and to better evaluate the seismic hazard. To achieve this goal, we collect 24 ac...

The Pedernales Mw7.8 earthquake that occurred on the subduction interface between the Nazca plate and the Southamerican plate on April 16th 2016 caused extensive damages to several coastal cities of Ecuador. The event was well recorded by a large number of accelerometric stations both in the near field and all over the country. A total of 62 record...