Scientists Stumped by Oregon Quakes

No damage reported; 6.9 tremor felt as far away as Phoenix, LA

(NEWSER) - A series of four earthquakes hit within an hour today under Mexico’s Gulf of California, BNO News reports. The second of the tremors, which at 9 miles deep were relatively shallow and thus more dangerous, registered a 6.9 on the Richter scale. No damage was immediately reported, and though one agency warned early about possible tsunami threats, that warning was soon canceled. More»

(NEWSER) - There’s nothing like a 7.8 magnitude earthquake to bring two countries together—literally. The temblor that hit New Zealand last week has shoved its southern island about 12 inches closer to Australia, TVNZ reports. That might not sound like much, but considering that New Zealand typically moves about a third of an inch per year, it’s a huge overnight shift, geologists say. More»

And hit to San Andreas or Cascadia faults could be even 'scarier'

(NEWSER) - Is what happened in Japan set to repeat itself in California? Author Simon Winchester thinks so. In an article for Newsweek that’s turning some heads , Winchester notes that though scientists aren’t sure why, major earthquakes have a tendency to happen in clusters, with a quake on one side of a plate followed by one on the other some weeks or months later. “It is as though the earth becomes like a great brass bell,” he writes. Strike it in one place, and the vibrations carry. More»

Quakes widen fissure at rarely-seen speed: scientists

(NEWSER) - Africa is gradually breaking apart—and in the past several months, the process has accelerated. Now, amid earthquakes and volcanic eruptions, it’s happening exceptionally quickly, reports Der Spiegel . Water is threatening to flood a fracture between Ethiopia and Mozambique, scientists say; while it will be millions of years before that happens, the northern portion of the Great Rift Valley faces a much more immediate risk. More»

Moving masses of rock by several meters affects rotation

(NEWSER) - The magnitude 8.8 earthquake that hit Chile may have actually shifted the Earth's axis, shortening the length of a day, a NASA scientist says. Moving hundreds of kilometers of rock changes the earth's distribution of mass, and, in turn, changes the planet's rate of rotation. In this case, the axis likely shifted by about 3 inches, shortening the day by about 1.26 microseconds. More»