Subparallel breaks coalesce on face of hill (in shadow) and form a single rupture heading off to the upper left.
Images
Earthquake Hazards Program images.
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Aerial Photo of the Surface Rupture
Subparallel breaks coalesce on face of hill (in shadow) and form a single rupture heading off to the upper left.
Aerial Photo of the Surface Rupture
Downward view onto gullies, gravel bar, and other laterally offset features. Here slip appears to be about 2 meters.
Downward view onto gullies, gravel bar, and other laterally offset features. Here slip appears to be about 2 meters.
Aerial Photo of the Surface Rupture
Breaks cutting alluvium, nicely lit.
Aerial Photo of the Surface Rupture
View downward onto site with maximum observed lateral displacement along the Lavic Lake fault. Here a vehicle track and dry creek bed are laterally offset by approx. 370-480 centimeters. The orientation of fractures here is nearly North-South.
View downward onto site with maximum observed lateral displacement along the Lavic Lake fault. Here a vehicle track and dry creek bed are laterally offset by approx. 370-480 centimeters. The orientation of fractures here is nearly North-South.
Aerial Photo of the Surface Rupture
Fracture cutting across the countryside (left to right) such that the fault scarp is lit up by the sun, appearing as a bold white line.
Fracture cutting across the countryside (left to right) such that the fault scarp is lit up by the sun, appearing as a bold white line.
Aerial Photo of the Surface Rupture
'Mole track' at the max. slip site from the ground.
'Mole track' at the max. slip site from the ground.
Aerial Photo of the Surface Rupture
View towards south across Lavic Lake, with the surface rupture running from lower right to upper left. In the middle distance on the right is an ancient lava flow.
View towards south across Lavic Lake, with the surface rupture running from lower right to upper left. In the middle distance on the right is an ancient lava flow.
Ground Photo of Fault
No description.
Ground Photo of Fault
No description.
Ground Photo of Fault
No description.
Ground Photo of Fault
No description.
Ground Photo of Fault
No description.
Spectral Accelerations (Youngs et al., 1997)
Predicted Spectral Accelerations by the Youngs et al. (1997) Attenuation Relationship
Predicted Spectral Accelerations by the Youngs et al. (1997) Attenuation Relationship
Oceanic Spreading
An oceanic spreading ridge is the fracture zone along the ocean bottom where molten mantle material comes to the surface, thus creating new crust. This fracture can be seen beneath the ocean as a line of ridges that form as molten rock reaches the ocean bottom and solidifies.
An oceanic spreading ridge is the fracture zone along the ocean bottom where molten mantle material comes to the surface, thus creating new crust. This fracture can be seen beneath the ocean as a line of ridges that form as molten rock reaches the ocean bottom and solidifies.
Ring of Fire
The "Ring of Fire", also called the Circum-Pacific belt, is the zone of earthquakes surrounding the Pacific Ocean- about 90% of the world's earthquakes occur there. The next most seismic region (5-6% of earthquakes) is the Alpide belt (extends from Mediterranean region, eastward through Turkey, Iran, and northern India.
The "Ring of Fire", also called the Circum-Pacific belt, is the zone of earthquakes surrounding the Pacific Ocean- about 90% of the world's earthquakes occur there. The next most seismic region (5-6% of earthquakes) is the Alpide belt (extends from Mediterranean region, eastward through Turkey, Iran, and northern India.
Seismicity of the United States 1975-1995
Seismicity of the United States 1975-1995. Seismicity refers to the geographic and historical distribution of earthquakes.
Seismicity of the United States 1975-1995. Seismicity refers to the geographic and historical distribution of earthquakes.
ShakeMap Directivity Map
This ShakeMap of the January 17, 1994 M6.7 Northridge earthquake shaking shows the result of rupture directivity toward the north.
This ShakeMap of the January 17, 1994 M6.7 Northridge earthquake shaking shows the result of rupture directivity toward the north.
Northridge, CA Earthquake Damage
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Collection of USGS still images taken after the January 17, 1994 Northridge earthquake highlighting the damage to buildings and infrastructure.
Active Emerson Fault
The Emerson fault, one of the segments that ruptured in the M7.2 1992 Landers, Calfornia earthquake.
The Emerson fault, one of the segments that ruptured in the M7.2 1992 Landers, Calfornia earthquake.
1992 M7.2 Landers, California Earthquake Slip Model
1992 M7.2 Landers, California Earthquake Slip Model1992 M7.2 Landers, California earthquake slip model
A slip model is a kinematic model that describes the amount, distribution, and timing of slip associated with an earthquake.
1992 M7.2 Landers, California Earthquake Slip Model
1992 M7.2 Landers, California Earthquake Slip Model1992 M7.2 Landers, California earthquake slip model
A slip model is a kinematic model that describes the amount, distribution, and timing of slip associated with an earthquake.
Cross-Sections of Seismicity Along the San Andreas Fault
Cross-Sections of Seismicity Along the San Andreas FaultCross-Sections of Seismicity Along the San Andreas Fault from "Lessons learned from the Loma Prieta, California, earthquake of October 17, 1989"
Cross-Sections of Seismicity Along the San Andreas Fault
Cross-Sections of Seismicity Along the San Andreas FaultCross-Sections of Seismicity Along the San Andreas Fault from "Lessons learned from the Loma Prieta, California, earthquake of October 17, 1989"