Articles tagged "san andreas fault"

parkfield segment san andreas

Parkfield segment of San Andreas fault can host large earthquakes

Although magnitude 6 earthquakes occur about every 25 years along the Parkfield Segment of the San Andreas Fault, geophysical data suggest that the seismic slip induced by those magnitude 6 earthquakes alone does not match the long-term slip rates on this part of...

November 30, 2017

california earthquakes november 2017

More than 130 quakes after M4.6 NE of Gonzales, California

Following a M4.6 earthquake that hit just NE of Gonzales, California on November 13, 2017, the USGS has registered more than 130 aftershocks within the 5 km (3.1 miles) of the epicenter. Although most of those aftershocks weren't felt by the Central Coast, the...

November 22, 2017

california map san jacinto fault

Anza Gap: Earthquake risk elevated with detection of spontaneous tectonic tremor

Scientists at the University of California, Riverside have detected spontaneous tectonic tremor - a signature of slow earthquakes deep below the earth’s surface - in the Anza Gap region of the San Jacinto Fault. Tectonic tremors are believed to increase the...

October 27, 2017

historic earthquakes san andreas fault

Historic earthquakes discovered along San Andreas Fault

In a new study, USGS geologist Dr. Kate Scharer and her team excavated trenches across the San Andreas Fault – near Frazier Mountain in northeastern Kern County – to investigate the timing of sand, mud, and gravel deposits that were episodically ripped...

March 03, 2017

san andreas fault featured

Research suggests mega-earthquake could occur along the entire San Andreas fault

New research suggests a devastating mega-earthquake could occur throughout the entire San Andreas fault line in California, yielding far worse consequences than previously assumed. The San Andreas fault, 1 300 km (800 miles) long, was not considered capable of...

November 28, 2016

sediment layers along eastern edge of the salton sea southern california

New fault line discovered near San Andreas in southern California

Scientists from Scripps Institution of Oceanography and the Nevada Seismological Laboratory have discovered a new, potentially significant fault in southern California. Now named the Salton trough fault (STF), the newly discovered fault runs parallel to the San...

October 07, 2016

salton sea eq swarm usgs google

Increased risk of a major earthquake on San Andreas fault, California

Although the swarm of over 300 earthquakes under the Salton Sea in southern California seems to be over, seismologists are warning there still remains an increased risk of a big earthquake on the San Andreas fault. Experts said it’s important to understand...

October 01, 2016

san_andreas_fault_feat_2

San Andreas fault prone to low-frequency tremors caused by the gravitational pull of Sun and Moon

A new study, led by the US Geological Survey (USGS) scientists revealed the gravitational pull of Sun and Moon, responsible for inducing the tides, can also trigger special types of earthquakes on the well-known San Andreas fault. Researchers discovered the small,...

July 19, 2016

san_andreas_fault_feat

Scientists discover a large-scale motion around San Andreas Fault

A team of researchers from the University of Hawai'i at Mãnoa, University of Washington and Scripps Institution of Oceanography (SIO) analyzed the motion of Earth's crust from the data collected by an array of GPS instruments placed near the San...

June 21, 2016

san_andreas_fault_f

Multi-fault ruptures can unleash stronger California earthquakes, Stanford study

A new research by Stanford scientists, based on California's deadly 1812 earthquake, demonstrates how the rupturing of multiple faults in California can trigger even more powerful quakes. It was assumed previously that infamous San Andreas Fault was the sole...

March 15, 2016

san_andreas_fault

UC Berkeley scientists begin monitoring tremors on San Andreas Fault

UC Berkeley seismologists were surprised last August to see a dramatic increase in faint tremors occurring under the San Andreas Fault near Parkfield, in Central California, about 10 hours after a magnitude 6.0 earthquake struck Napa. Somehow, that quake triggered tiny

May 09, 2015

north_anatolian_fault_zone

Magnitude of quake scales with maturity of fault, suggests new study by German scientist

The oldest sections of transform faults, such as the North Anatolian Fault Zone (NAFZ) and the San Andreas Fault, produce the largest earthquakes, putting important limits on the potential seismic hazard for less mature parts of fault zones, according to a new study to

April 30, 2014

Earthquake_interaction_on_the_scale_of_a_fault_to_the_planet_f2

Earthquake interaction on the scale of a fault to the planet

Ross Stein (PhD, 1980, Geology), Geophysicist at the USGS gave this interesting presentation a couple of days ago at the Stanford University. He explains the fundamentals of earthquake science and takes listeners to one of its frontiers.His research focuses on

April 25, 2014

2earthquake_release_su_f

Stanford scientists use 'virtual earthquakes' to forecast Los Angeles quake risk

Stanford scientists have developed a new "virtual earthquake" technique and used it to confirm a prediction that Los Angeles would experience stronger-than- expected ground motion if a major quake occurred along the southern San Andreas Fault. They are

January 24, 2014

SaltonSea.A2003294.1820.250m

Faults beneath the Salton Sea ruptured during Colorado River floods

Study finds that faults beneath the Salton Sea ruptured during Colorado River floods and may have triggered large earthquakes on the southern San Andreas Fault.Like a steaming kettle with the top on, pressure is building beneath the surface of California that could

June 30, 2011