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News from USA

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Ring of Fire WARNING: When will earthquake strike California - when will BIG ONE hit?
Express   11 February 2019   USA   California  
<p>CALIFORNIA will eventually be struck by a huge earthquake that could have catastrophic effects. But when will the Big One hit?</p>
Polar vortex reportedly causes ‘frost quakes’ in Chicago: What is the geological phenomenon?
Fox News   01 February 2019   USA   Chicago  
<p>Freezing temperatures in Chicago — which at one point Thursday were said to be lower than those in Alaska and Antarctica — have reportedly caused a loud, ground-shaking phenomenon to occur: so-called “frost quakes.”<br>Chicago residents reported hearing ...
Earthquake faults crisscross LA. Is it safe to tunnel here?
Los Angeles Curbed   16 January 2019   USA   Los Angeles  
The underground portion of the soon-to-open Crenshaw/LAX Line is located in a liquefaction zone, where engineers must contend with damp, sandy soil that can destabilize in an earthquake. By Liz Kuball
<p>In December, tech billionaire Elon Musk and his tunneling startup, The Boring Company, unveiled a mile-long tunnel beneath Hawthorne&mdash;a prototype of an undergroundtransportation system called &ldquo;Loop.&rdquo;<br />Musk has repeatedly suggested that ...
An old bridge goes out with a bang
The Washington Post   15 January 2019   USA   New York  
Mike Segar/Reuters
<p>A big chunk of an old New York bridge went down in history Tuesday as explosives demolished the eastern part of the Tappan Zee Bridge.<br />The bridge has been replaced by the Governor Mario M. Cuomo Bridge, which carries Interstate 87 traffic over the ...
New Seattle tunnel designed to ride out catastrophic 9.0 quake, DOT says
KOMONEWS.com   08 January 2019   USA   Seattle  
<p>SEATTLE &ndash; The new Highway 99 tunnel opening in early February has been constructed to withstand a powerful once-in-2,500-years earthquake of roughly 9.0 magnitude off the Washington coast, state Department of Transportation officials said Monday.<br ...
Filed under: Construction News
America's first public earthquake-warning app unveiled in Los Angeles
The Guardian   04 January 2019   USA   California  
Photograph: Richard Vogel/AP
<p>Los Angeles has unveiled the US&rsquo;s first publicly available earthquake early-warning app, a development seismologists hope will move cities across the west coast to invest in wide-scale alert technology.<br /><br />ShakeAlertLA uses mobile app technology ...
Monument Valley a geological gift that keeps giving
The Post and Courier   29 December 2018   USA   Arizona-Utah  
A geometric jumble of rock in lowering sunlight
<p>Like one’s first sight of the sea, a sky-piercing peak or soaring redwood forest, this iconic red-sand desert region straddling the Arizona-Utah border is indelible, a marvel to behold. Famed for the towering sandstone buttes of Monument Valley Navajo Tribal ...
A First Glimpse Of Hanford’s Tunnel 2 As Work Continues To Prevent Another Hazardous Collapse
Jefferson Public Radio   20 December 2018   USA   Washington  
Hanford workers pump grout into a port on Tunnel 2. The tunnel is being sealed up so to lessen the risk of collapse that could endanger workers and the public. CREDIT: ANNA KING/N3
<p>In the middle of Washington&rsquo;s desert, there&rsquo;s a tunnel that stretches a third of a mile underground.</p> <p>It&rsquo;s full of railcars with chemical and radioactive waste. Now, contractors at the Hanford cleanup site are racing to fill the ...
Filed under: Construction News
The troubled history of the Tappan Zee’s replacement
CITY & STATE NEW YORK   17 December 2018   USA   New York  
An aerial view of the Gov. Mario M. Cuomo Bridge during the opening of the eastbound span. | Kevin Coughlin/Office of the Governor
<p>Last week, NBC New York reported that dozens of bolts fell apart during the construction of the Governor Mario M. Cuomo Bridge, a key infrastructure project of Gov. Andrew Cuomo. Some workers also alleged that there had been a cover-up about the bolts. ...
Filed under: Construction News
Eldridge Moores: He Looked at a Jumble of Rocks and 'Saw' the Sierra Being Born
KQED   17 December 2018   USA   California  
Eldridge Moores in one of the road cuts where rocks reveal the origins of the Sierra Nevada. (Craig Miller/KQED)
<p>The new year will mark a half-century since a "seismic" shift in geology unfolded.</p><p>Eldridge Moores was a key thinker in that shift. He died in late October, but the longtime UC Davis professor and field researcher left a permanent mark on geology ...