Earthquake Hazards

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October 10, 2019

October 17, 1989 (Part 1)

On October 17, 1989, at 5:04 pm a magnitude M6.9 earthquake struck near Loma Prieta, California. It was a tragic reminder of the destructive power of earthquakes. However, it was also a watershed moment in seismic research. 30 years later, we revisit the earthquake through the eyes of the scientists who experienced it. And studied it. These are their stories. In Part 1 (of

...
October 10, 2019

October 17, 1989 (Part 2)

On October 17, 1989, at 5:04 pm a magnitude M6.9 earthquake struck near Loma Prieta, California. It was a tragic reminder of the destructive power of earthquakes. However, it was also a watershed moment in seismic research. 30 years later, we revisit the earthquake through the eyes of the scientists who experienced it. And studied it. These are their stories. In Part 2 (of

...
October 10, 2019

October 17, 1989 (Part 3)

On October 17, 1989, at 5:04 pm a magnitude M6.9 earthquake struck near Loma Prieta, California. It was a tragic reminder of the destructive power of earthquakes. However, it was also a watershed moment in seismic research. 30 years later, we revisit the earthquake through the eyes of the scientists who experienced it. And studied it. These are their stories. In Part 3 (of

...
October 10, 2019

October 17, 1989 (Part 4)

On October 17, 1989, at 5:04 pm a magnitude M6.9 earthquake struck near Loma Prieta, California. It was a tragic reminder of the destructive power of earthquakes. However, it was also a watershed moment in seismic research. 30 years later, we revisit the earthquake through the eyes of the scientists who experienced it. And studied it. These are their stories. In Part 4 (of

...
September 30, 2019

Prototype Earthquake Early Warning System (Interview)

Retired seismologist David Oppenheimer reflects on the first prototype earthquake early warning system used during the 1989 Loma Prieta earthquake. Scientists deployed an analog system to notify first responders of impending earthquake activity as they worked on rescue efforts at the Cypress Viaduct collapse in Oakland, CA.
 

person in tunnel
September 13, 2019

Jim Smith Inside Lucchetti Dam in Puerto Rico

Jim Smith working on cabling inside of Lucchetti dam in Puerto Rico, assisting the Puerto Rico Strong Motion Program with Hurricane Maria recovery efforts. 

person with yellow top and red hardhat
September 11, 2019

Scott Lydeen at Strawberry Peak Seismic Station Tower

USGS technicial Scott Lydeen climbing the tower at the Strawberry Peak seismic station tower, part of the Southern California Seismic Network.

person on large metal tower
August 28, 2019

Scott Lydeen on Strawberry Peak Seismic Station Tower

USGS technicial Scott Lydeen climbing the tower at the Strawberry Peak seismic station tower, part of the Southern California Seismic Network.

August 23, 2019

Animation of a Scenario M6.9 Earthquake on the Rose Canyon Fault

This video presents an animation of computer-simulated ground motions that might occur for a magnitude 6.9 earthquake rupturing the Rose Canyon fault in southern California. The scenario earthquake ruptures a 65-km-long section of the Rose Canyon fault that lies just offshore of San Diego, California, and Tijuana, Mexico. In this scenario, the rupture starts near the

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July 17, 2019

ShakeAlert Sensor and Station

This is b-roll footage of a ShakeAlert earthquake early warning system seismic station. These seismic stations and sensors are deployed around California and are used to monitor earthquake activity.
 

two women making measurements of a rupture in the ground surface
July 16, 2019

Women in Science - Responding to Ridgecrest, CA earthquake July 2019

USGS scientists Beth Haddon (left) and Jaime Delano (right) measuring an offset road at the site of the Ridgecrest earthquake sequence rupture. Photo credit: Chris DuRoss, USGS

A woman makes notes while overlooking earth ruptures in ground on a dirt road
July 16, 2019

Women in Science - Responding to Ridgecrest, CA earthquake July 2019

USGS scientist Jessie Thompson Jobe collects and records information on earthquake surface ruptures observed along a roadway following the Ridgecrest earthquake sequence. Photo credit: Ryan Gold (USGS)