Posts Tagged: ‘earthquakes’

Earthquakes are terrifying reminders that some of Earth’s processes remain beyond human control. So why do some people think scientists can actually create these disasters? Learn more about earthquake conspiracy theories in this podcast.

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I was reading a BBC article about the Desarmes family, who either consider themselves extremely lucky or incredibly unfortunate, considering they lived in Port Au Prince in January when the 7.0 magnitude earthquake hit Haiti. So they left their home to go stay with another member of the family — who lives in Santiago, Chile. They arrived just in time to survive the 8.8 magnitude quake that crushed Chile on February 27.

Having spectacularly failed statistics in college and passing only after negotiating my release with the professor, I can’t even begin to calculate the odds of being in two places where major earthquakes took place six weeks apart. (If you know how to, let me know; I’m very curious how one would come up with that probability). Despite adopting Disraeli’s lies, damn lies and statistics philosophy as a defense mechanism, I must admit there are some pretty cool stories of people inadvertently carving out a place for themselves in the narrow margins that make up the hinterlands of probability.

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You Asked: How is an earthquake measured on the Richter scale? — Shivaram, Hyderabad, India Marshall Brain Answers: An earthquake causes the earth to move. You can see the movement in a typical earthquake if you watch this video: Note how the poster, cabinets and the computer monitors are moving when the earthquake hits. The [...]

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Haiti is in everyone’s thoughts right now, first because of the tragic level of death and destruction that has occurred this week, and second because of the knowledge that natural disasters can strike anywhere at any time, and we are all vulnerable. Here are some facts about Haiti to help you get a better perspective… [...]

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MIT Scientist Explains OLEDs by Electrocuting a Pickle – “How do Sony’s and LG’s OLED TVs work? MIT professor Vladimir Bulovic explains using a glowing pickle and an accent to die for…” European-Mediterranean Seismological Centre – Click on “Worldwide Earthquakes” tab to see recent quakes with magnitudes greater than 4.0. Looks like there were about [...]

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Greetings, earthlings. Dr. Clark and I hope that everyone has had a great week so far and that our American brothers and sisters are looking forward to a great holiday weekend. As for the rest of the world — enjoy working tomorrow, suckers!

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What makes the earth quake? Join Josh and Chuck as they explore the science and history of earthquakes in this podcast from HowStuffWorks.com.

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With new geothermal projects ramping up out West, some people are beginning to question the logic of breaking up the hard rock beneath Earth’s crust — especially when it’s already bordering on fragile ground or in some cases, even fault lines.

Geothermal power is usually created by tapping steam beds just beneath the surface, often near geysers or fumaroles. But increasingly, energy companies are looking to go deeper — a much as 2.5 miles below the surface of the Earth. According to the New York Times, seismologists say this can be risky.

When you create enhanced geothermal power, you’re purposefully breaking up rocks, or creating mini-earthquakes. The injection and extraction of water to make steam causes the already delicate rock to contract and fracture. Since this fracturing is necessary for the process (it allows the water to mill through the cracks, steep and transform into steam), geothermal sites are usually located in areas where the rock is weaker.

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I thought that nothing got the Swiss riled up. Not wars. Not secret bank accounts. Not vast quantities of fine chocolate. But apparently an old-fashioned earthquake will do the trick. Specifically, one with a magnitude of 3.4 and its accompanying sonic boom that scared the pants off Basel, Switzerland back in early 2007.

You see the Swiss were building an enhanced geothermal energy system and several minor earthquakes occurred, as is common when you’re working on developing this kind of energy.

Artificial or enhanced geothermal energy works along the same premise as natural geothermal energy. All geothermal power originates when cracked hot rock heats water into steam. With natural geothermal energy, the Earth provides the cracked rock and steam to power a generator. With artificial geothermal energy, we have to coax the rock to crack with some water, setting the stage for some earthquakes to occur. And that’s what happened to the Swiss.

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