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How a 'Seismic Cloak' Could Slow Down an Earthquake
Daniel_Stuckey writes "The United States is currently gripped in a bout of earthquake mania, following a series of significant tremors in the West. And any time Yellowstone, LA, or San Francisco shakes, people start to wonder if it's a sign of The Big One to come. Yet even after decades of research, earthquake prediction remains notoriously hard, and not every building in quake-prone areas has an earthquake-resistant design. What if, instead of quaking in our boots, we could stop quakes in their tracks? Theoretically, it's not a crazy idea. Earthquakes propagate in waves, and if noise-canceling headphones have taught us anything, it's that waves can be absorbed, reflected, or canceled out. Today, a paper published in Physical Review Letters suggests how that might be done. It's the result of French research into the use of metamaterials—broadly, materials with properties not found in nature—to modify seismic waves, like a seismic cloaking device."
If you use waves to cancel out the quake I see two problems.
1. The amount of energy needed to cancel it out.
2. The risk that it may actually result in a worse situation somewhere else, possibly trigger an unexpected quake instead.
If builders built buildings the way programmers wrote programs, then the first woodpecker would destroy civilization.