Here, we describe a recent massive landslide in Utah that was successfully forecast and thus resulted in no fatalities or injuries. For the period of 2004–2011, more than 32,000 landslide-related fatalities have been documented, not including those landslides caused by earthquakes (Petley, 2012). Landslides are among the most destructive geological forces in nature, causing billions of dollars in damage annually (see ). Hence, it appears that in this case the common geological sequence of events was inverted: Instead of a large earthquake triggering landslides, it was a landslide that triggered several small earthquakes. Seismograms for these events have impulsive arrivals characteristic of tectonic earthquakes. Interestingly, in the six days following the landslide, 16 additional seismic events were detected and located in the mine area. This magnitude discrepancy, and in particular the relative enhancement of long-period energy, is characteristic of landslide seismic sources. Local magnitudes (M L) for the two slides, which are based on the amplitudes of short-period waves, were estimated at 2.5 and 2.4, while magnitudes based on the duration of seismic energy (md) were much larger (>3.5). Seismograms show a complex mixture of short- and long-period energy that is visible throughout the network (6–400 km). The Bingham Canyon mine is located within a dense regional network of seismometers and infrasound sensors, making the 10 April landslide one of the best recorded in history. Because of extensive geotechnical surveillance, mine operators were aware of the instability and had previously evacuated the area. Fortunately, there were no fatalities or injuries. In total, ~65 million cubic meters of material was deposited, making the cumulative event likely the largest non-volcanic landslide to have occurred in North America in modern times. The northeastern wall of the 970-m-deep pit collapsed in two distinct episodes that were each sudden, lasting ~90 seconds, but separated in time by ~1.5 hours. It passed the state House and Senate with unanimous votes of approval.ĭeclaring porn a public health hazard has no practical impact, as the Salt Lake Tribune notes - the resolution doesn't ban porn or earmark any money to combat it.īut supporters are declaring the bill a symbolic victory.On the evening of 10 April 2013 (MDT) a massive landslide occurred at the Bingham Canyon copper mine near Salt Lake City, Utah, USA. The resolution has been working its way through the Utah Legislature since late January. "We realize this is a bold assertion not everyone will agree on, but it's the full-fledged truth," Herbert, a Republican, tweeted Tuesday. The nonbinding resolution calls for research, education and policy changes "to address the pornography epidemic that is harming the citizens of Utah and the nation." Gary Herbert signed a resolution stating that pornography is a "public health hazard" that harms both individuals and society. On Tuesday, the state of Utah officially declared a new public health crisis: pornography. by conservative religious groups as porn becomes more accessible on smartphones and tablets. Todd Weiler, appearing on the Utah Senate floor in Salt Lake City in February, introduced a resolution to declare pornography a public health crisis, echoing an argument being made around the U.S.
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