Navigation Links
New international satellite observations help assess future earthquake risk in Haiti
Date:2/9/2010

Virginia Key, Florida--Scientists at the University of Miami have analyzed images based on Synthetic Aperture Radar (SAR) observations taken before and just after Haiti's earthquake, on January 12. The images reveal surprising new details.

The images were obtained using data from Japan's ALOS satellite and made available to the scientific community through the efforts of the European Space Agency (ESA) and GEO, the Group of Earth Observation, an umbrella consortium of countries that promotes the exchange of satellite data to efficiently observe our planet.

According to the new data, the earthquake rupture did not reach the surface--unusual for an earthquake this size. More importantly, the images confirm that only the western half of the fault segment that last ruptured in 1751 actually ruptured in the current earthquake.

"We're still waiting for the other shoe to drop," said Tim Dixon, professor of geology and geophysics at the University of Miami Rosenstiel School of Marine & Atmospheric Science.

The images reveal other startling facts, "Given the plate tectonic setting scientists expected mainly sideways motion, yet there was a large amount of vertical motion during the earthquake," said Falk Amelung, professor of geology and geophysics at RSMAS. "This explains how such a relatively small rupture was able to generate such a large earthquake."

The data shows the earthquake occurred on or near the Enriquillo Fault, where most scientists suspected but until now did not have enough evidence to prove it. "This is a relief, because it shows that our current ideas about the tectonics of the area are correct," Amelung added.

Dixon is looking at every bit of evidence to try to understand the possibility of another major quake hitting Port au Prince in the near future. "There's a reasonable probability of another large quake, similar to the January 12 event, striking Port au Prince within the next 20 to 30 years," Dixon said. "I'd like to see them relocate critical infrastructure such as government buildings, schools and hospitals, farther north out of the danger zone."

In 1986, at the dawn of the GPS age, scientists from the National Aeronautics Space Administration (NASA) Jet Propulsion Lab, including Dixon began, a set of geodetic measurements on the island of Hispaniola. A decade later, those measurements would reveal that the Enriquillo fault in southern Haiti was a significant earthquake hazard. "In a very real sense, those early measurements set the stage for our current understanding of this dangerous fault zone. Scientists have been studying this fault and others on the island, ever since," Dixon said.

Shimon Wdowinski and Guoqing Lin, professors of geology and geophysics at RSMAS; Fernando Greene, graduate student at RSMAS and Sang-Hoon Hong, post-doctoral research scientist at RSMAS and at Florida International University also contributed to the analysis of the new images.

The work of the Rosenstiel School in active tectonics is supported by NASA, the National Science Foundation (NSF) and the National Earthquake Hazard Reduction Program (NEHRP). Other institutions involved in the analysis of the images included JAXA (the Japanese Space Exploration Agency) and NASA's Jet Propulsion Lab.


'/>"/>
Contact: Barbra Gonzalez
barbgo@rsmas.miami.edu
305-421-4704
University of Miami Rosenstiel School of Marine & Atmospheric Science
Source:Eurekalert  

Related biology news :

1. Duke and the International Serious Adverse Event Consortium to partner on research
2. Duke and the Internationalserious Adverse Event Consortium to partner on research
3. K-State plant pathology professor awarded international professorship for Latin America
4. International Biometric Society co-publishes journal with Springer
5. 1st International Rip Current Symposium
6. Oceans day at International Climate Change Conference
7. Germany starts its part in the International Cancer Genome Project
8. 2009 winner of the Manpei Suzuki international prize for diabetes research announced
9. International expedition investigates climate change, alternative fuels in Arctic
10. NTU ramps up international research -- inks deals with 4 leading Turkish universities
11. AACR, NCI and EORTC to host Molecular Targets and Cancer Therapeutics International Conference
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New international satellite observations help assess future earthquake risk in Haiti
(Date:4/11/2017)... BROOKLYN, N.Y. , April 11, 2017 /PRNewswire-USNewswire/ ... identical fingerprints, but researchers at the New York ... University College of Engineering have found that partial ... fingerprint-based security systems used in mobile phones and ... previously thought. The vulnerability lies in ...
(Date:4/5/2017)... , April 4, 2017 KEY FINDINGS ... anticipated to expand at a CAGR of 25.76% during ... diseases is the primary factor for the growth of ... report: https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The global ... product, technology, application, and geography. The stem cell market ...
(Date:3/30/2017)... Trends, opportunities and forecast in this market ... (fingerprint, AFIS, iris recognition, facial recognition, hand geometry, vein ... use industry (government and law enforcement, commercial and retail, ... others), and by region ( North America ... Pacific , and the Rest of the World) ...
Breaking Biology News(10 mins):
(Date:7/20/2017)... (PRWEB) , ... July 20, 2017 , ... ... solution to make clinical trial sites and study participants truly unified. TrialKit, a ... compliant (FDA 21 CFR Part 11) research studies entirely on mobile devices. With ...
(Date:7/18/2017)... ... July 18, 2017 , ... G-CON today announced that it ... for its Patent Applications 14/858,857 and 13/669,785 both entitled Modular, Self-Contained, Mobile Clean ... expand the protection of G-CON’s R&D investments and validate the G-CON platform as ...
(Date:7/17/2017)... ... ... Whitehouse Laboratories is excited to announce that it has ... ISO 80369 standard test procedures. The ISO 80369 series of eight test standards ... this recent expansion, Whitehouse Labs becomes one of the only facilities in the ...
(Date:7/17/2017)... ... July 17, 2017 , ... ... a wide range of overlapping clinical features. The advancement of targeted next-generation sequencing ... of NDD research and testing. , However, designing a custom panel for ...
Breaking Biology Technology: