Donyelle Davis
Science and Products
USGS Geologists Join Efforts in Montecito to Assess Debris-Flow Aftermath
Days after fatal debris flows devastated Southern California’s Montecito community, a team of U.S. Geological Survey geologists joined county, state, and federal partners to survey and evaluate the aftermath.
Magnitude 5.8 Earthquake in Montana
The USGS has up-to-date details on the July 6, 2017 event.
“ShakeAlert” Earthquake Early Warning System Goes West Coast Wide
The U.S. Geological Survey along with university, state and private-sector partners will highlight the rollout of Version 1.2 of the USGS ShakeAlert earthquake early warning system on April 10, 2017.
History of Abrupt Sinking of the Seal Beach Wetlands: New Study Reveals Past Quakes along Fault and Offers Glimpse into the Future
Seal Beach, Calif.— A new collaborative study shows evidence of prior abrupt sinking of the wetlands near Seal Beach, caused by ancient earthquakes that shook the area at least three times in the past 2,000 years, according to researchers.
Prehistoric earthquakes discovered along San Andreas Fault
Pasadena, Calif. – A new U.S. Geological Survey study offers a view into the past behavior of large earthquakes along the southern San Andreas Fault.
Some Early 20th Century Earthquakes in Los Angeles Area Might Have Been Man-Made
A new study from the USGS suggests that some early 20th century earthquakes in southern California might have been induced (man-made) by past practices that were used by the oil and gas industry.
Uncharted: Exploring one of America’s fastest faults
A team of USGS scientists spent 10 days in the wilderness, exploring one of the fastest-moving faults in America
During Recent Droughts: Central Valley Groundwater Levels Reached Historical Lows and Land Subsidence Intensified
This year, groundwater levels in many wells in California’s Central Valley are at or below historical low levels. In addition, from 2007 through 2015, land subsidence that correlates to areas with large groundwater level declines has strongly increased in two large agricultural areas near the towns of El Nido and Pixley, according to a new article by the U.S. Geological Survey.
USGS Earthquake Science Center Welcomes New Director
The U.S. Geological Survey is pleased to announce the selection of Dr. Stephen Hickman to serve as the new director of the USGS Earthquake Science Center, headquartered in Menlo Park, California.