New Methods for Dating and Sequencing Ancient Earthquakes Along the Wasatch Fault Zone
Complex geologic sites, like those between the fault segments along the Wasatch fault zone in Utah, make the dating and ordering past earthquakes a difficult task. Two new methods were used to make this task easier and to get better results.
A New Map of Rodgers Creek Fault in Sonoma County, California
A new more detailed and higher resolution map of the Rodgers Creek Fault in Sonoma County, California, has been produced using aerial photography and hillshade imagery derived from LiDAR data.
A Possible Cause of Earthquakes in the Continental Interior
A new map of crustal stress across the U.S. shows that the plate interior stress is variable, with contributions from plate boundary stress, crustal collapse due to gravity, and more local and subtle changes to style, orientation, and earthquake rate.
The Past Holds the Key to the Future of Aftershock Forecasting
The outcomes of past aftershock sequences can be used to describe the range of possibilities for a current sequence.
Untangling Faults at Depth – What Lies Beneath Panamint Valley, California?
The eastern edge of Panamint Valley,CA has two types of faults that can be seen in the near-surface geology. 150 geophones and a seismic source will help reveal the subsurface picture.
55-Story Tall Building – Before and After Earthquake Retrofit
A building in Japan was analyzed before and after a seismic retrofit to make it more resilient to shaking.
Washington DC Stone and Brick Buildings Vulnerable to Distant Quakes
New study shows that DC geologic conditions strongly affect earthquake shaking.