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.
Quarry Blast Triggered Release of Tectonic Strain?|
November 17, 2013 | ABC Local
On November 4 people throughout the Chicago area were frightened by ground motion that was thought to have been a powerful blast at a quarry south of the city. Now, USGS believes that a small blast at the quarry may have triggered an earthquake about seven seconds later.
Earthquake BOOMS in Oklahoma|
November 5, 2013 | KFOR.com
Many residents of Oklahoma are reporting that events in the earthquake swarm occurring there produce large noises that sound like thunder. An Oklahoma Geological Survey staff member addresses the noise in this article.
(Since January 2009, more than 200 magnitude 3.0 or greater earthquakes have rattled Central Oklahoma. See the USGS report here.)
Quarry Blast Frightens Chicago?|
November 5, 2013 | Chicago Tribune
At shortly after noon today, people throughout the Chicago area were frightened because they thought that an earthquake was occurring. A USGS scientist reported that it appeared to be an unusually strong quarry blast south of Chicago. A portion of the USGS “Did you feel it?” map is shown below with more USGS data here. People as far away as Wisconsin and Indiana claimed that they felt the shaking.
Gas Injection Triggering Small Earthquakes?|
November 4, 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 University of Texas at Austin press release.
Hazard: Landslides Triggered by Earthquakes in Seattle|
October 23, 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.
Oklahoma Earthquake Swarm Continues|
October 23, 2013 | USGS
“Since January 2009, more than 200 magnitude 3.0 or greater earthquakes have rattled Central Oklahoma, marking a significant rise in the frequency of these seismic events. [...] The analysis suggests that a contributing factor to the increase in earthquakes triggers may be from activities such as wastewater disposal.” Quoted from the USGS press release.
Higher Risk in the New Madrid Seismic Zone|
October 17, 2013 | USGS
New research provides insight on why the New Madrid Seismic Zone is unique and may continue to pose a higher earthquake risk than adjacent areas in the central United States.
Deep Sea Internet Has Geological Applications|
October 17, 2013 | University at Buffalo
“University at Buffalo researchers are developing a deep-sea Internet. The technological breakthrough could lead to improvements in tsunami detection, offshore oil and natural gas exploration, surveillance, pollution monitoring and other activities.” Quoted from the University at Buffalo press release.
The Government Shutdown and Geology|
October 15, 2013 | American Geophysical Union
The American Geophysical Union has a short article that explains why the “Government Shutdown Affects More Than Jobs“.
M7.1 Earthquake in the Philippines|
October 15, 2013 | CNN
On Tuesday, a magnitude 7.1 earthquake struck the Philippines, killing dozens of people and destroying many buildings.
Earthquake Risk and Concrete Structures in Los Angeles|
October 13, 2013 | LA Times
A Los Angeles Times analysis reports that more than 1000 concrete buildings in the city could be at risk of collapsing from the lateral motions of a future earthquake.
Understanding Deep Earthquakes|
October 10, 2013 | Argonne National Laboratory
“Scientists broke new ground in the study of deep earthquakes, a poorly understood phenomenon that occurs where the oceanic lithosphere, driven by tectonics, plunges under continental plates – examples are off the coasts of the western United States, Russia and Japan.” Quoted from the Argonne National Laboratory press release.
Most Popular News Items for September 2013|
October 6, 2013 | Geology.com
Niagara Falls Without Water (1969)
Volcanoes of the Rio Grande Rift
Dashboard Cam Captures Massive Rock Fall
Huge Crater in Antarctic Ice
Many Types of Sand
What Happened at Mount Paektu in North Korea?
The Dry Hole that Led to $1.5 Trillion in Crude
Fracking Does Not Cause Earthquakes
How Earthquake Early Warning Systems Work|
September 30, 2013 | National Geographic
National Geographic has an article that explains how an earthquake early warning system can work and the benefits that it can bring to an urban area.
Induced Earthquakes in the Central and Eastern States
September 26, 2013 | USGS
“The number of earthquakes has increased dramatically over the past few years within the central and eastern United States. More than 300 earthquakes above a magnitude 3.0 occurred in the three years from 2010-2012, compared with an average rate of 21 events per year observed from 1967-2000. This increase in earthquakes prompts two important questions: Are they natural, or man-made?” Quoted from the USGS press release.
Magnitude 7.7 Earthquake Kills Over 200 in Pakistan
September 25, 2013 | The Weather Channel
At least 200 people were killed by a magnitude 7.7 earthquake in Pakistan’s Baluchistan province.
There is a report that a mud volcano formed an island off the coast in the Arabian Sea at the same time that the earthquake was occurring. The Weather Channel video has comments on this from a USGS scientist.
Natural Hazard Viewer for Arizona|
September 24, 2013 | Arizona Geological Survey
The interactive Natural Hazard Viewer focuses on four hazards common to Arizona — geologic faults and earthquakes, earth fissures, floods and wildfire. Each hazard is described in detail and displayed as a layer on a map. Moreover, the natural hazard information is dynamic; site updates will occur as new or revised hazard data becomes available.
Editor’s Comment: Every state geological survey should have one of these!
Most Threatened Cities and Metro Areas|
September 23, 2013 | Quartz
Quartz has a summary article that illustrates: “The 10 cities most threatened by a damaging natural disaster” and “The metro areas most threatened by a natural disaster” (data from Swiss Re). The most threatened are in Asia with earthquakes and flooding as the major threats.