Haiti earthquake: fault visible from Space
source: http://abcnews.go.com/Technology/HaitiEarthquake/haiti-earthquake-fault-line-visible-space-s...
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- ras_menelik
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PHOTO A magnitude 7.0 earthquake occurred on January 12, 2010, at Port-au-Prince, Haiti, with major impact to the region and its citizens. This perspective view of the pre-quake topography of the area clearly shows the fault that is apparently responsible for the earthquake as a prominent linear landform immediately adjacent to the city. Collapse
(NASA)
http://abcnews.go.com/Technology/HaitiEarthquake/haiti-earthquake-fault-line-vis...
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- groups:
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JaneBond007
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"Many land are inside the fault line and epicenter for the earthquake..we must also understand that even inside the core of the earth has a problem due to the cycle of the mantle and the second core in making holes to offer some lava to lessened the warmth inside the core."-Donabell C. De Apera
- 2 years ago
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JaneBond007
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thewarnerla
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i don't buy that as a satellite image. but it does detail what your are advocating
- 2 years ago
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thewarnerla
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MoonLoon
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Good Post, RAS.
- 2 years ago
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MoonLoon
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royulery
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ethicalvegan; there is no simple way to explain plate tectonics and the carribe is the most jumbled example to work with. there are so many layers of knowledge needed to get the big picture it is really best to take a city college geology course. the time spent is worthwhile and the information mind boggling and then there's the field trips, co-ed week long field trips.
that being said, i'll try to give a thumbnail sketch. the hard surface of the earth floats in large plates on top of a semi molten layer. there are two types of plates, one made of basalt is heavy and makes up the ocean basins, the other is made of granite and is lighter causing it to float higher above the oceans. the plates are in motion like giant bumper cars and collide constantly, some are dragged under and are remelted. the plates around the world are fairly evenly spaced and sized except in the gulf of mexico where it gets messy. the plate boundries are like an escher print with apparent movement in more than one direction. my reference to the dinosaur killer landing close by causing the disruption seems logical but i have done no research in this area. im sure there are others who have addressed this, the chicxulub asteroid left a layer of iridium dust around the world after all. - 2 years ago
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royulery
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royulery
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this is an area of very confusing geology. plate boundaries there can have more than one direction relative to other plates. i guess the scrambled nature of the area may be due to the nearby chicxulub event punching a hole in the crust.
- 2 years ago
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royulery
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EthicalVegan
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royulery:
Do you mean the one in Yucatan?
I know very little about this so -- and this is only if you have time -- would you mind explaining a bit further, and is fairly simple terms, please? I love learning new things.
Thanks!
- 2 years ago
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EthicalVegan
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EthicalVegan
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I really appreciate your find of this article. The above enhanced photo at first confused me, but then I realized that I'm looking from West to East (not south to north, the way most map-readers do it).
That fault line is frighteningly obvious. Kind of like the one now being talked about in Kentucky, and very much like the San Andreas fault line here in the entire state of California.
Were the residents of Haiti in a financial position to re-build, surely they'd want to retrofit, as we did both in San Francisco and again in Los Angeles (after our two big earthquakes which, in retrospect, weren't even THAT bad, after all, when compared to the horrors of Haiti's earthquake and aftershocks).
For instance, when I finally had to replace my water heater, the new one had to be earthquake-protected. Huge straps and bolts, emergency shut-offs, etc., and an inspection to ensure it was done up to our latest earthquake standards. Then again, I live in a part of the country where -- although there are hundreds of thousands of poor people, as with anywhere else -- there are also enough super rich people, and super rich government officials to see to it that we are being retrofitted.
In fact, personally, I'm now ALMOST at the point where I don't quiver every time I drive over the high part of the 14/5 interchange where the freeways BROKE and crashed far below, taking along with them a motorcycle cop who blindly drove into the void.
Where could THAT kind of money come for these poor people? And would their government even bloody CARE?
People will need to be relocated -- although, particularly those with a religious bent -- will want to remain close to where they think their loved ones' bodies are. And where WOULD they go?! Who's going to provide for them? For their shelter? For their food and water? For their medical needs? Who's going to have the money to build them new hospitals? And again, since so many are religious, who's going to provide for the rebuilding of the churches and other houses of worship they feel a need to have? And how will those people even GET to these new places?
We folks in the "greater" Los Angeles area couldn't move. We couldn't AFFORD to. Yes, some immediately moved out, and I mean by the first week, while our earth was still rattling substantially. But I sure as hell couldn't afford to pack up and move.
Ah, enough. I'm just appreciative of this article, and so thank you for submitting it.
Those poor, poor INNOCENT people......................
- 2 years ago
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EthicalVegan
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2helenahandbasket
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There is a similar fault line that goes through western Ky. There was a massive earthquake there in the 1800s and it's predicted there will be another before too many years. There's not one single thing anyone can do to stop it. Bad shit happens all the time. It's called LIFE, and there's no guarantee we'll always be safe from Mother Nature.
- 2 years ago
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2helenahandbasket
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bailey78
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Just why should I send them money? I know folks right around this area that need help. The goverment does nothing for them because they live here in the land of plenty. To bad the Goverment thinks more of others than the people that live here.
- 2 years ago
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bailey78
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BigJoeSixPack
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bailey78:
No handouts buddy!
- 2 years ago
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BigJoeSixPack
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maisry
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bailey78:
Karma? Humanitarianism? What-goes-around-comes-around? Empathy?
- 2 years ago
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maisry
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JanforGore
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Wow, will it even be possible for people to live here now? Where would the population be evacuated to if it had to be done and could it be done?
- 2 years ago
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JanforGore
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JonRaymond
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JanforGore:
No worries. The occuping U.S. forces will simply bulldoze the place for their brand spanking new military bases. Any Haitians in the way will get plowed under. Problem solved. The U.S. military - a solution for everything.
- 2 years ago
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JonRaymond
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UrbanGypsy
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JanforGore:
Good question Jan, unfortunately some people cannot address questions seriously without letting everyone in on their extreme paranoia and cynicism. I'm referring to Jon.
Luckily, the rest of the country is still intact for the most part. I imagine it will be easier to relocate people in more stable parts of the country in the north and away from the Port-au-Prince area.
- 2 years ago
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UrbanGypsy
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2helenahandbasket
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JanforGore:
@Jon....... I guess the US should just come on out of Haiti and leave those folks alone. We're only a bunch of opportunists, just there to take over their country. I'm certain the folks there would rather NOT have our help, our food, water, our digging out of their dead, our protection from their own violent gangs.... You're right. We DO need to just come on home and let THEM handle their own problems.
People like you make me sick, Jon, for enjoying the benefits of living in America yet trashing her with every breath. We're STILL the greatest country in the world, and I'd like to remind you that you have the freedom to move to any other country you like. And you can thank a soldier for that.
- 2 years ago
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2helenahandbasket
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jmsrmy
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[Rhetorical] How does a developing country prepare for this type of event when the structures are prior built, even with a 2 year warning? If evacuation is the answer, there were no sufficient warnings as with with tropical cyclones. Restructuring and reinforcing the buildings may have helped but the finances would have taken serious global investments and convincing [see above comment from ras_menelik]: "The earthquake in Northridge, Calif., on Jan. 17, 1994, did an estimated $20 billion in damage -- in 1994 dollars. It would be closer to $29 billion when inflation is factored in.]...
- 2 years ago
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jmsrmy
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ras_menelik
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It is not as if the earthquake in Haiti was a surprise to the world's seismologists.
They had known for decades about the fault line that caused it, and some geologists, including Eric Calais of Purdue University and Paul Mann of the University of Texas, had warned as recently as 2008 that when the fault gave way, the result could be a quake of up to 7.2 magnitude.
"Such studies should be considered high priority in Jamaica, Haiti and the Dominican Republic, given the seismic hazards posed by the fault," they wrote at the time.
The Enriquillo-Plantain Garden fault, as it is known to geologists, appears as an almost straight cut in the earth in radar images from the space shuttle Endeavour, recorded 10 years ago on the STS-99 mission in February 2000.
See the arrows in the false-color image of Haiti above (NASA has a large version posted HERE).
You are looking eastward in this picture. The Plantain Garden fault shows as a straight, sharp cut in the mountains. Elevations in this computer-generated image are exaggerated by a factor of two.
The U.S. Geological Survey says the fault probably caused a major earthquake in Jamaica in 1907, and written descriptions suggest it caused powerful quakes in 1860, 1770, 1761, 1751, 1684, 1673, and 1618.
Tension Built Underground
But in recent decades the two sides of the fault line had been locked in place as they ground against each other and stresses built up in the ground.
"This fault was locked in a way that it didn't produce a lot of small quakes," said Art Lerner-Lam of the Lamont-Doherty Earth Observatory of Columbia University in Palisades, N.Y.
Without those small quakes as a reminder of the greater threat, people in the area put up cheap buildings, made from cinderblock and tin.
U.S. scientists say they understand: Haiti was so poor it could barely deal with day-to-day concerns, much less the long-term threat of an earthquake.
Seismologists emphasize that they are still very far from predicting earthquakes, since the ground beneath our feet is by nature chaotic. But last week's earthquake in Haiti had a reported magnitude of 7.0, so the warning by Mann, Calais and their colleagues of a 7.2 quake was not far off.
Earthquake in Haiti: The View from Above
How to assess the damage? Many of the numbers so far are estimates from the Haitian government, or what is left of it. A California-based firm, EQECAT, which provides damage estimates for insurance companies, plugged the Haitian earthquake into a computer model.
"In light of the considerable humanitarian aid needed for recovery, in addition to the cost of reconstruction, EQECAT's updated estimate of economic damage is in the low-single-digit billions of dollars," the firm said.
By U.S. standards, that's cheap. The earthquake in Northridge, Calif., on Jan. 17, 1994, did an estimated $20 billion in damage -- in 1994 dollars. It would be closer to $29 billion when inflation is factored in.
But the difference is in the death toll. Haitian officials say more than 200,000 people have died, compared to 72 after Northridge.
Since Haiti has enough trouble burying its dead, to say nothing of counting them, we may never know the final numbers.
http://photojournal.jpl.nasa.gov/jpeg/PIA12494.jpg - 2 years ago
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ras_menelik
