NATURAL DISASTER: 8.8-magnitude earthquake rocks Chile and the Pacific Rim, tsunami hits Asia-Pacific islands

Chile’s 8.8-magnitude earthquake—which resulted in scores of aftershocks stronger than a magnitude of 5—is among the strongest earthquakes ever recorded.

The strongest earthquake ever recorded occurred in Chile on May 22, 1960, which measured 9.5 on the Richter scale. According to a scientist from the USGS’s National Earthquake Information Center, “The [most recent] Chile quake released 500 times more energy than the quake that hit Haiti.”

Earthquakes are measured on the Richter Scale, which illustrates the amount of energy released during an earthquake:

Most people have heard of the Richter Scale for measuring the ‘size’ or ‘strength’ of an earthquake. This scale is quantitative and based on the amount of energy released by an earthquake.

The inferred energy of a quake is a function of both the amplitude and the duration of a single wave. The seismogram below shows waves with a wide range of amplitude (up to +/- 350) and duration (the first big wave cycle – up, down, back to zero – started just after 8 minutes on the chart and ended nearly 40 seconds later; other waves lasted only seconds).

So when you do all the math, here is what you get.

One unit on the Richter Magnitude Scale corresponds to a tenfold increase or decrease in the amplitude of the wave on the seismogram – 350 in this example would become either 3500 or 35! This change, when summed over all the wavelengths and wave types, translates to a 30 times increase in energy.

So a seismograph (the instrument) that recorded a 1 cm deflection on a seismogram (the tracing) for a magnitude 5 earthquake would show a 100 cm deflection for a magnitude 7 quake that released 30×30 = 900 times as much energy. You do the math for a magnitude 8 quake!

However, the strongest earthquakes aren’t necessarily the deadliest. From Voice of America:

Throughout history, the most powerful earthquakes have not necessarily been the deadliest. The deadliest earthquake of modern times was recorded in 1556 in central China. More than 830,000 people were reported killed in that quake, which had an estimated magnitude of 8.

More information on the massive Chile earthquake is available from the National Earthquake Information Center, and tsunami warnings are available via NOAA’s National Weather Service. To learn about supporting disaster relief in Chile go here. Images from the Chile earthquake can be found at a real-time image search via Twitcaps. The U.S. Department of State has a Chile Task Force, which may be contacted via email at ChileEarthquake@state.gov or by calling 1-888-407-4747. Google has a set up a person finder for the Chile Earthquake at http://chilepersonfinder.appspot.com/.

Infographics:

Image via The New York Times

Image via The Daily Titan

Image via ‘RIA Novosti’ newswire

Videos:

USGS: Chile Earthquake ‘Alarming’

More Resources:

  1. Latest Earthquakes Magnitude 2.5 or Greater in the United States and Adjacent Areas and Magnitude 4.5 or Greater in the Rest of the World – Last 7 days
  2. The 10 Largest Earthquakes of the Last Century

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THEORIES: What came before the Big Bang?

Lots of stuff, according to this theory:

[T]he cosmos we live in was actually created by the cyclical trillion-year collision of two universes (which they define as three-dimensional branes plus time) that were attracted toward each other by the leaking of gravity out of one of the universes.

In their view of the universe the complexities of an inflating universe after a Big Bang are replaced by a universe that was already large. flat, and uniform with dark energy as the effect of the other universe constantly leaking gravity into our own and driving its acceleration. According to this theory, the Big Bang was not the beginning of time but the bridge to a past filled with endlessly repeating cycles of evolution, each accompanied by the creation of new matter and the formation of new galaxies, stars, and planets.

Via The Daily Galaxy

Speaking of the Universe and all, check out this interactive site that attempts to put our Universe into perspective


Photo source for attribution. The author or licensor of this image does not endorse my work or me and their image is protected under an attribution license.

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EVOLUTION: “[A] significant proportion of the American people think that the ‘The Flintstones’ is a documentary”

According to a University of Texas/Texas Tribune Poll, “Nearly a third of Texans believe humans and dinosaurs roamed the earth at the same time, and more than half disagree with the theory that humans developed from earlier species of animals.” Furthermore, political affiliation is an important factor that illustrates whether or not—and how—an individual believes in evolution. From The Texas Tribune:

Democrats (28 percent) are less likely than Republicans (47 percent) to think that humans have always existed in their present form and more likely (21 percent to 7 percent) to think humans have developed over millions of years without God’s guidance. About the same percentages of Democrats and Republicans (40 and 36 percent, respectively) believe that evolution took place over time with God’s guidance. Democrat Bill White‘s voters were the most likely to believe in evolution without a divine hand (33 percent); on the Republican side, by comparison, only 6 percent of Rick Perry‘s supporters were in that category.

Has life on earth always existed in its present form? Republicans are more likely to agree (29 percent) than Democrats (16 percent). They’re less likely to believe that life evolved over time with no guidance from God (8 percent to 24 percent). Democrats are slightly less inclined to believe in evolution with a “guiding hand from God” (50 percent to 55 percent).

Republicans are less likely to believe that humans developed from earlier species of animals; 26 percent agree, while 60 percent disagree. Among Democrats in the survey, 46 percent agree that humans evolved from earlier species; 42 percent disagree. Perry’s voters were most hostile to this premise — 67 percent disagree.

About the same numbers of Democrats and Republicans — 43 percent — disagree with the idea that dinosaurs and humans lived on the planet at the same time. Republicans were slightly more likely to agree with the idea (31 percent to 27 percent). Perry had more voters in each group on the GOP side, but Kay Bailey Hutchison had the largest share of voters who believe in that coexistence.

Prindle says the results recall a line from comedian Lewis Black. “He did a standup routine a few years back in which he said that a significant proportion of the American people think that the ‘The Flintstones’ is a documentary,” Prindle says. “Turns out he was right. Thirty percent of Texans agree that humans and dinosaurs lived on the earth at the same time.”

More from The Guardian:

No matter how often they come up, the figures for creationism in the USA still boggle the mind. The latest poll noticed by the National Centre for Science Education, shows that among registered voters in Texas, 51% disagree that humans have evolved from earlier species of animal. Among Republicans, the figure rises to 60%. Low hanging fruit indeed.

The nearest comparable poll is a Gallup one, from 2008. This shows actually higher rates of creationism in the USA as a whole than in Texas, where the religious right is particularly powerful. But it is possible that the prominence of a “Don’t know” question in the Texas poll explains the discrepancy. I suspect myself that all these questions ought also to have a “Don’t care” axis and this suspicion is only confirmed by close study of the Gallup poll.

Two things jump out from that. The first is that creationists are less of a political force than their opponents. This at least was true in 2007, when Gallup asked whether a political candidate would attract more or less votes if they announced that they did not believe in evolution. The differences here between registered voters and all adults were trivial. I both case, more than half didn’t care; at least it would make no difference to their voting intentions (and in a follow-up question, 70% thought a candidate’s views on evolution quite irrelevant). But among those who did care, creationists were outnumbered two to one by evolutionists: 15% of the voters would be more likely to vote for a candidate who espoused creationism, and 29% less likely.

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WEIRD AND FASCINATING CREATURES: Fascinating images of a “flying” lizard from Indonesia

Biophilia_curiosus, on reddit, took these extraordinary images of a “flying” lizard that was discovered in the Lambusango Forest Reserve, which is located in Buton, Indonesia. TreeHugger, most appropriately, describes these little lizards as resembling Avatar’s Turoks. These images highlight the importance of preserving biodiversity by preserving the natural landscapes or environments that these little creatures call home. Indeed, some of the most fascinating creatures can fit in the palm of a human hand.

POLITICS: According to a poll by Fox News, the Tea Party Movement consists of a fruitless mix of racism & conspiracy theories

The results of this poll are ironic, even if the Fox News poll is an Internet poll. I’d add ignorant to the mix of racism and conspiracy theories though.

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