Natural Disasters64
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Why Haiti Suffered More Than Chile
By Colin Stark About six weeks ago, a large earthquake devastated Haiti and killed over 200,000 people. Saturday, a huge earthquake releasing 500 times more energy, devastated Chile and killed hundreds. So why did the smaller earthquake kill so many more people?
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Researchers Probe Bottom Off Port-au-Prince
Scientists are now sailing off the coast of Haiti to assess the recent earthquake there, and the potential for more. This is the latest update, emailed by chief scientist Cecilia McHugh from the research vessel Endeavor. (Read the full story of the project, involving the Earth Institute and other major institutions.) The first part of the science program focused…
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Earthquake Research Vessel Reaches Haiti Coast
Scientists aboard the U.S. research vessel Endeavor and collaborators ashore have just arrived on the coast of Haiti to start a 20-day survey of that will assess the history and potential continued threat of earthquakes there. (Read the full story of the project, involving the Earth Institute and other major institutions.) Chief scientist Cecilia McHugh of Lamont-Doherty Earth Observatory…
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Risks and Rewards: funding a technical earthquake response
A rapid technical response to the damaging earthquakes in Malawi produces both humanitarian and scientific benefits, and we hoped that both scientific and international assistance agencies would support our effort. Our seismic field effort serves two purposes: (1) to provide badly needed seismic equipment and technical training to the Malawi Geological Survey department (MGSD); and…
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Some Thoughts About Dust, Rio Gallegos
I’ve been to Stewart Island, off the southern tip of New Zealand, but I’m pretty sure this is the furthest south I’ve been. Cool! We’re here in Rio Gallegos. We’ve just rendezvoused with Dr. Jay Quade, a geologist from the University of Arizona, and his wife Barbara. We’ve got two cars, a bunch of boxes…
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Assessing Continuing Quake Risks, by Sea
This week U.S. and Haitian scientists will start a 20-day research cruise off Haiti to address urgent questions about the workings of the great Jan. 12 earthquake, and the possibility of continuing threats. They hope to gather sonar images, sediments and other evidence from the seafloor that might reveal hidden structures, how they have moved,…
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Climate Risks and Haiti
As Haitians struggle to rebuild their country after January’s devastating earthquake, they face added risks, related to climate. Currently, about 1.2 million Haitians are without proper shelter, and an additional 470,000 have been displaced from their homes, according to the U.N. Office for the Coordination of Humanitarian Affairs (latest updates). This leaves them vulnerable to storms and extreme…
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High, Dry and Safe: In Search of the Perfect Site
The ideal spot for a seismic station is dry, quiet and safe from vandals and thieves. Seismometers record slight ground motions, allowing them to hear distant (and not so distant) earthquakes. But cars or even kids playing near a seismic station can produce ground vibrations that overwhelm the subtle sounds of earthquakes. Seismic stations include…
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A Rough Start
The magnitude 6.0 earthquake that struck Malawi on Saturday night, December 19, spurred us into action. We had been closely following the earthquakes there, but this one confirmed the unusual nature of the seismic sequence. It also happened to be the most destructive. Leonard Kalindekafe, director of Malawi’s Geological Survey, asked us to come and…