Miguel Estrada

Evaluation of Building Damage and Tsunami Inundation Based on Satellite Images and GIS Data Following the 2010 Chile Earthquake

This paper presents the results of a field survey conducted by the authors after the 2010 Chile earthquake. The authors visited the affected area about a month after the earthquake. The usefulness of satellite images captured after the earthquake to detect damaged buildings in Concepción is discussed, compared with the field photos taken by the authors. GIS datasets for the damage levels of buildings in Talca and the tsunami-inundated areas in Talcahuano, Dichato, and Constitución are constructed in this study. The GIS dataset for the damage levels of buildings in Talca is compared with the satellite images, and the possibility of detecting damage to adobe houses is investigated. Further, a series of fundamental analyses are performed using a digital elevation model (DEM) that is constructed from ASTER images (ERSDAC 2009), and the usefulness of the DEM is evaluated comparing with the field survey results.

Tsunami Source Inversion Using Tide Gauge and DART Tsunami Waveforms of the 2017 Mw8.2 Mexico Earthquake

On September 8, 2017 (UTC), a normal-fault earthquake occurred 87 km off the southeast coast of Mexico. This earthquake generated a tsunami that was recorded at coastal tide gauge and offshore buoy stations. First, we conducted a numerical tsunami simulation using a single-fault model to understand the tsunami characteristics near the rupture area, focusing on the nearby tide gauge stations. Second, the tsunami source of this event was estimated from inversion of tsunami waveforms recorded at six coastal stations and three buoys located in the deep ocean. Using the aftershock distribution within 1 day following the main shock, the fault plane orientation had a northeast dip direction (strike

Identifying Evacuees’ Demand of Tsunami Shelters Using Agent Based Simulation

= 320^{\circ }

Extraction of Urban Information for Seismic Hazard and Risk Assessment in Lima, Peru Using Satellite Imagery

=320∘, dip

Post-Disaster Urban Recovery Monitoring in Pisco After the 2007 Peru Earthquake Using Satellite Image

= 77^{\circ }

Scenarios of Earthquake and Tsunami Damage Probability in Callao Region, Peru Using Tsunami Fragility Functions

=77∘, and rake