The last major earthquake in Los Angeles was the 6.7-magnitude Northridge quake, which killed close to 60 people in 1994. But it was not close to the catastrophe that seismologists predict if there is a major shift on the San Andreas fault, and the fact that it has not produced a major quake in recent years has fed a sense of complacency. Seismologists now say a 7.5-magnitude event on the Puente Hills would be "the quake from hell" because it runs right under downtown Los Angeles and have estimated that would kill up to 18,000 people, make several million homeless, and cause up to $250 billion in damage. "We want to keep the city up and running after the earthquake happens," says Lucy Jones aka "The Earthquake Lady," a seismologist with the United States Geological Survey and something of a celebrity in a city that is very aware of the potential danger of its location. "If everything in this report is enacted, I believe that L.A. will not just survive the next earthquake, but will be able to recover quickly."
He also thinks the technology underpinning games matters less than ever. Romero says high poly counts and new shaders are a distraction from what's important: good game design. "Look at Minecraft – it's unbelievable that it was made by one person, right? And it shows there's plenty of room for something that will innovate and change the whole industry. If some brilliant designers take the lessons of Minecraft, take the idea of creation and playing with an environment, and try to work out what the next version of that is, and then if other people start refining that, it'll take Minecraft to an area where it will become a real genre, the creation game genre."
For those in California, did you feel the quake? (And from how far away?) Update: 08/24 13:15 GMT by T : Also in earthquake news: an even stronger quake (magnitude 6.4) on Saturday struck central Chile, shaking Santiago -- nearly 70 miles from the epicenter -- for more than half a minute, but with "no immediate reports of fatalities or serious damage."
When igneous rocks form in the presence of water, they contain peroxy bonds with OH groups. Under great temperature and pressure, these bonds break down creating electron-holes pairs. The electrons become trapped at the site of the broken bonds but the holes are free to move through the crystal structure. The natural diffusion of these holes through the rock creates p and n regions just like those in doped semiconductors. And the boundary between these regions behaves like the p-n junction in a diode, allowing current to flow in one direction but not the other. At least not until the potential difference reaches a certain value when the boundary breaks down allowing a sudden increase in current. It is this sudden increase that generates a magnetic field. And the sheer scale of this process over a volume of hundreds of cubic meters ensures that these magnetic pulses have an extremely low frequency that can be detected on the surface. The new theory points to the possibility of predicting imminent earthquakes by triangulating the position of rocks under pressure by searching for the magnetic pulses they produce (although significantly more work needs to be done to characterize the process before then)."
Three reactors melted down at the Fukushima Daiichi nuclear power plant following the quake and tsunami, but the exact cause of the accident is still unknown. How massive amounts of radioactive materials from the reactors were dispersed is also unclear. Today was also the day when hundreds of former residents announced that they were suing TEPCO, the plant operator, and the government for additional compensation." Although the nuclear accident was dwarfed by the other devastation, the effects of the meltdown will be felt for much longer. The Bulletin of Atomic Scientists published an article today on the reactors that didn't meltdown, and the NRC chair has some comments on the progress at Fukishima.