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5 December 2013 11:26 am ,
Vol. 342 ,
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
Since arriving on the island of Guam in the 1940s, the brown tree snake ( Boiga irregularis ) has extirpated native...
An animal rights group known as the Nonhuman Rights Project filed lawsuits in three New York courts this week in an...
Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
Thousands of scientists in the Russian Academy of Sciences (RAS) are about to lose their jobs as a result of the...
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
- 5 December 2013 11:26 am , Vol. 342 , #6163
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ScienceShot: Lasers Shine New Light on Quakes
9 February 2012 2:02 pm
Lasers fired from low-flying planes could help researchers identify previously unknown fault zones after a quake, a new study shows. Soon after the magnitude-7.2 temblor that struck northern Baja California, Mexico, on 4 April 2010, scientists used aircraft-mounted laser altimeters, which are typically used to map terrain at high-resolution, to scan the swath of landscape including the numerous fault zones believed to have generated the quake. Then, they compared that high-resolution view of the terrain with data fortuitously collected during similar scans when the region was mapped in 2006. Differences between the two sets of data reveal fault zone slippage that occurred during the quake, the researchers report online today in Science. Besides showing ground movements (a portion of the Borrego fault runs diagonally from lower left to upper right, with yellow tones depicting vertical motion of up to 1 meter and blue tones revealing subsidence of as much as 4 meters in the image shown; ground-level image shown in inset), data collected at the southern end of the quake's 120-kilometer-long rupture zone revealed a previously unknown set of faults that had been masked by the thick sediments of the Colorado River Delta. Repeated scans of quake-prone areas could therefore help scientists better assess a region's seismic hazard, the researchers contend.
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