Earthquake Engineering Research Institute
Learning From Earthquakes

Ground failures in Accumoli (Rieti)

Date:                                      06/09/16 Category:                              Ground failures Typology:            – Municipality/ Area:                    Accumoli (Rieti) Distance from epicenter:             about 1 km Damage Typology  The following photos have been taken […]

Slope instability within the Municipality of Accumoli (Rieti)

 Slope instability within the Municipality of Accumoli (Rieti) Date:                                      06/09/16 Category:                              Slope instability Typology:            – Municipality/ Area:                   Accumoli (Rieti) Distance from epicenter:             about 10 km […]

Ground failures in Arquata del Tronto (Ascoli Piceno)

 Ground failures in Arquata del Tronto (Ascoli Piceno) Date:                                      07/09/16 Category:                              Ground failures Typology:            – Municipality/ Area:                   Arquata del Tronto (Ascoli Piceno) Distance from epicenter:           about […]

Ground failures in Pescara del Tronto (Ascoli Piceno)

 Ground failures in Pescara del Tronto (Ascoli Piceno) Date:                                     20/10/16 Category:                              Ground failures Municipality:                     Pescara del Tronto – Arquata del Tronto (Ascoli Piceno) Epicentral distance:        […]

Rockfall along the road network in province of Ascoli Piceno

 Rockfall along the road Date:                                       9/11/16 Category:                              Rockfall Structural typology:         Road network Municipality-Area:           Provincia di Ascoli Piceno Epicentral distance:         about 30 km […]

Sierra El Mayor Earthquake of April 4, 2010, Baja California

Surface fault rupture and other ground failure investigations are underway by a collaborative team comprised of representatives from the U.S. Geological Survey, California Geological Survey, Southern California Earthquake Center, and other organizations. The Earthquake Engineering Research Institute also deployed a group of its members to the region soon after the event struck. Major geologic findings […]

Observations of Retaining Walls from the EERI Team

Of course, there were exceptions.  Timber pile walls consistently performed well, or at least, they are still standing and look to be in great shape.  As an example of the exception, I attached one photo where there is settlement and cracking at the top of a timber pile wall, but the walls itself is fantastic.  […]

Earthquake Impacts to Rockfall Risk Management

Figure 1. Figure 2. Figure 3.             Figure 4. Figure 5.         The volcanic rocks in this area are comprised of basaltic and trachytic lavas with interbedded breccias creating a blocky mass. On the ~500m slopes above the coastal road recent rockfall (up to 5m x 3m […]