Magnitude 6.9 Earthquake Off the California Coast|
March 11, 2014 | San Jose Mercury News
A magnitude 6.9 earthquake occurred off the coast of California. Fortunately it was about 50 miles from land, which reduced the impact on coastline communities.
Human Induced Earthquakes Triggering Even Larger Quakes?|
March 9, 2014 | USGS
“Scientists observed that a human-induced magnitude 5.0 earthquake near Prague, Oklahoma in November 2011 may have triggered the larger M5.7 earthquake less than a day later. This research suggests that the M5.7 quake was the largest human-caused earthquake associated with wastewater injection.”
What Your Homeowner’s Insurance Does Not Cover|
March 4, 2014 | Geology.com
Most homeowners insurance policies have exclusions that make them worthless when the home is damaged by common geologic problems such as floods, earthquakes, landslides, mine subsidence, cavern collapse and expansive soils. When a home is damaged the homeowner often is surprised that his “all perils” policy has these exclusions.
Oklahoma Earthquake Time-Lapse Map|
February 23, 2014 | NewsOK.com
This animated map of Oklahoma Earthquakes between 2004 and present shows an increase in size and frequency starting in late 2009.
No Earthquake Deaths in Alaska Since 1964|
February 23, 2014 | Anchorage Daily News
The last deadly earthquake in Alaska occurred in 1964. It killed 131 people in Alaska and 16 more by tsunamis in Oregon and California. In the last 50 years there have been no earthquake deaths in Alaska even though several large earthquakes have occurred. Has that been luck?
Reviewing the New Madrid Earthquakes|
February 4, 2014 | Smithsonian.com
An article on the Smithsonian.com website looks back at the New Madrid, Missouri earthquakes of 1811 and 1812 (the strongest earthquakes in the recorded history of the conterminous 48 states) and looks forward to the possibility that similar events might occur in the future.
Natural Hazards of 2013|
February 2, 2014 | USGS
USGS has a short review of how a variety of natural hazards influenced the United States during calendar year 2013.
New Madrid is not Slowing Down|
January 30, 2014 | USGS
“Earthquake activity in the New Madrid Seismic Zone in the central United States does not seem to be slowing down.
USGS investigates whether current quakes in the region could be aftershocks of large earthquakes that occurred 200 years earlier.” Quoted from the USGS press release.
Protecting Holy Land Sites from Earthquakes|
January 23, 2014 | The Washington Post
The Washington Post has an article that explains how the Holy Land is vulnerable to powerful earthquakes and efforts that might help protect historical structures.
The Largest US Earthquake|
January 21, 2014 | USGS on YouTube
USGS has released a new video that looks back at the Magnitude 9.2 event now known as “The 1964 Great Alaska Earthquake and Tsunami”. This event changed scientific understanding of earthquakes because it was the first major earthquake that was studied from a plate tectonics perspective.
How Hard Will Vancouver Shake?|
January 21, 2014 | The Vancouver Sun
“New research is shaking up the entire notion of what could happen to the Vancouver area during an earthquake, indicating bridges and tall buildings would rattle and sway a whole lot more than previously thought.” Quoted from The Vancouver Sun article.
Ice Quake in Wisconsin?|
January 14, 2014 | Milwaukee Journal Sentinel
Check out this photo of a Wisconsin resident measuring a 100-foot-long “fault” caused by an “ice quake”.
Another article with a video here. Lots of news accounts here.
Northridge Earthquake Web Exhibit|
January 14, 2014 | EarthquakeCountry.org
“The Northridge 20 Virtual Exhibit website presents teachable moments – to learn and reflect, to share and to act. Teeming with content, graphics and video recounting the events of January 1994, this exhibit seeks to empower and motivate us to make ourselves safer in future earthquakes.” Quoted from EarthquakeCountry.org.
Mapping the Hollywood Fault|
January 9, 2014 | Los Angeles Times
The California Geological Survey has released new maps that show the Hollywood Fault trending under sites where major developments are planned. Read the article here and see the maps here.
Related: Google Map of the San Andreas Fault
What Causes Earthquake Lights?|
January 7, 2014 | Nature.com
“A new catalogue of earthquake lights — mysterious glows sometimes reported before or during seismic shaking — finds that they happen most often in geological rift environments, where the ground is pulling apart.” Quoted from the Nature article.
Hear Earthquakes Triggered by the Bingham Canyon Mine Landslide|
January 7, 2014 | The University of Utah
“Last year’s gigantic landslide at a Utah copper mine probably was the biggest nonvolcanic slide in North America’s modern history, and included two rock avalanches that happened 90 minutes apart and surprisingly triggered 16 small earthquakes.” Quoted from The University of Utah press release.
The story is accompanied by a sound file that allows you to hear the second rock avalanche followed by three earthquakes.
Successfully Forecasting the Size and Location of an Earthquake?|
January 1, 2014 | Georgia Tech
“Scientists using GPS to study changes in the Earth’s shape accurately forecasted the size and location of the magnitude 7.6 Nicoya earthquake that occurred in 2012 in Costa Rica.” Quoted from the Georgia Tech press release.
Dissipation of Energy by Deep Earthquakes|
December 29, 2013 | NBC News
“An investigation of the most powerful earthquake ever recorded deep within the Earth suggests deep quakes may be better at dissipating pent-up energy than similar quakes near the surface.” Quoted from the NBC News story.
Seattle Buildings at Risk of Landslides|
December 22, 2013 | University of Washington
“The next big earthquake on the Seattle fault could trigger destructive landslides in the city, potentially affecting a much larger area than previously thought, and in areas outside those currently considered to be landslide prone.” Quoted from the University of Washington press release.
NASA Hazard Warning Systems|
December 12, 2013 | NASA
“Scientists at NASA’s Jet Propulsion Laboratory, Pasadena, Calif., and Scripps Institution of Oceanography at UC San Diego have enhanced existing GPS technologies to develop new systems for California and elsewhere to warn of hazards from earthquakes, tsunamis and extreme weather events.” Quoted from the NASA press release.
Failure of the Midcontinent Rift|
December 10, 2013 | Nature.com
Researchers are working to determine the cause of The Midcontinent Rift that began to tear what is now North America apart about one billion years ago and then failed.
Can CO2 Injection Trigger Earthquakes?|
December 8, 2013 | The University of Texas at Austin
“A new study correlates a series of small earthquakes near Snyder, Texas between 2006 and 2011 with the underground injection of large volumes of gas, primarily carbon dioxide (CO2) — a finding that is relevant to the process of capturing and storing CO2 underground.” Quoted from the Jackson School of Geosciences press release.
The Largest Recorded Fault Slip|
December 8, 2013 | National Geographic
The 2011 earthquake that produced the tsunami that devastated parts of Japan was the largest slip ever recorded and occurred on a fault that was lubricated with clay.
Zoom in on the San Andreas Fault|
December 5, 2013 | Geology.com
After being down for a couple of days for a software update, our interactive San Andreas Fault map is back in action. You can use it to follow the approximate trace of the fault from the Salton Sea in Southern California to near Shelter Cove, north of San Francisco. For more information about the San Andreas Fault visit SanAndreasFault.org, a website by Dr. David Lynch, who provided data used to make the interactive map.
M7.8 Earthquake in the Scotia Sea
November 17, 2013 | USGS
“The November 17, 2013 earthquake in the Scotia Sea, to the northwest of the South Orkney Islands, occurred as the result of either left-lateral strike slip faulting on an east-west oriented plane, or right-lateral faulting on a north-south plane. [...] The November 17 earthquake is the latest in a series of moderate-to-large earthquakes to strike the same region over the past several days.” Quoted from the USGS earthquake summary. No tsunami advisories were issued.