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April 25, 2017
Strong earthquake widely filmed in Chile
A swarm of magnitude ~5-6 earthquakes offshore Chile on April 23 was punctuated two days later by a much larger M6.9 earthquake yesterday evening. While nobody could have specifically predicted the size and timing of this earthquake, it is a terribly unsurprising event, occurring as it did in the midst of this swarm of heightened seismic activity, and in the highly seismically hazardous region of coastal Chile. As has been pointed out …
August 30, 2014
Earthquake rupture through a U.S. suburb
In the quiet wee hours of a NorCal summer night, the ground lurched beneath the mud of the northern San Francisco Bay and sent seismic waves roaring upward and outward into the world-famous wine valley’s central city, Napa, CA. After they wreaked their havoc in Napa and nearby communities the seismic waves spread farther afield and gently rumbled most of the Bay Area and its exurbs from our weekend slumber. By the time …
January 16, 2014
Two decades since L.A.’s Northridge earthquake
It’s already been twenty years since Los Angeles was last really rocked by an earthquake. The 4:31am Northridge temblor, a magnitude 6.7 that literally threw the city from its sleep, was the iconic natural disaster of the 1990s and the last in a string of quakes, fires, and mudslides to pummel Los Angeles in the early half of the decade. Though violent, destructive, and memorable, the Northridge quake struck merely …
November 19, 2013
The dilemma of earthquake retrofitting
The Los Angeles Times in October went on a bit of a crusade against lagging earthquake preparations in their quake-threatened home town. They have published a series of exposés investigating the lack of public awareness and the governmental inaction regarding building safety in the aging metropolis of L.A. “Concrete Risks” is indeed an illuminating piece, publicizing the fairly alarming prevalence of dangerous, quake-prone construction throughout a city that’s doomed to …
March 23, 2013
Sunday Reading
This is the inaugural post of a weekly series I promised to start that will supplement my more in depth but sporadic blogging about topical seismic events. A couple months ago I joined Twitter to broadcast some of the interesting seismic news snippets I come across daily, including lots of content that didn’t really warrant drawn out posts. As I promised then, I’m now compiling my full week of Tweeted …
