Quotes from the news wire:
The earthquake itself, like most large earthquakes, released energy with a wide range of frequencies, the bigger the earthquake, the greater the level of booming low tones. But big earthquakes also release a lot of high-frequency energy. The high-frequency energy gets damped out quickly as it travels through the earth, so the Haiti earthquake was damaging to Port-au-Prince in part because the fault rupture was so close.
Found on CNN 3 years ago
In the 1906 California earthquake, some people living 100 miles away slept through The Haiti quake, whereas the New Madrid earthquakes( which happened in 1811 and 1812 in present-day Missouri), it actually rang church bells in Charleston, South Carolina. That has to do with how the waves travel through the crust. There's a difference.
Found on CNN 3 years ago
There's three important factors with earthquakes, there's energy that leaves the source, there's amplification by the local geology when it gets to a site, and then there's what happens in between, it's the in between that really matters for East Coast versus West Coast.
Found on CNN 3 years ago
There is something called non-linearity, and it turns out that if you try to shake soft sediments really hard, it's not a bowl of Jell-O as much as it is a sandbox.
Found on CNN 3 years ago
If the sand is water-saturated, as I imagine it is in many places in India, it can start to behave like a liquid. Liquefaction has a couple of consequences for shaking : some of the potentially damaging shaking gets absorbed, which can be a good thing, but if the ground beneath a structure starts behaving like a liquid, the structure no longer has a solid foundation. It's like it's sitting on quicksand. Even a well-built building can just tip over.
Found on CNN 3 years ago
It was kind of more of a Wild West industry back a hundred years ago, and the technology wasn’t as sophisticated, people would just pump oil, and in some cases the ground would subside—fairly dramatically.
Found on FOX News 8 years ago
Several lines of evidence further suggest that most of the significant earthquakes in Oklahoma during the 20th century may also have been induced by oil production activities, deep injection of waste water, now recognized to potentially induce earthquakes, in fact began in the state in the 1930s.
Found on Reuters 9 years ago
Deep injection of waste water, now recognized to potentially induce earthquakes, in fact began in the state in the 1930s.
Found on Reuters 9 years ago
I don't think that there is much doubt that there will eventually be damage to the pier and beam structures. There should be damage to the brick facades should it continue, and, of course, damage to the sheet rock and damage to the house, you are continuously waiting for the other shoe to drop. You're concerned that there is going to be another one.
Found on CNN 9 years ago
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