“This is what would happen during a major earthquake along the Mississippi River,” says Luna, an associate professor of civil, architectural and environmental engineering at Missouri University of Science and Technology.
Researchers don’t fully understand the liquefaction process for silts (they have a better understanding of how it works with sands), but Luna is confident, based on his tests, that a 6.5 magnitude earthquake or bigger would cause solid surfaces along the banks of the Mississippi River to turn, momentarily, into liquid.
This would be very bad. For instance, liquefaction of river silts would cause bridges to fail in St. Louis during a big earthquake.
Last spring, Luna presented a paper, “Liquefaction Behavior of Mississippi River Silts,” at the Geotechnical Earthquake Engineering and Soil Dynamics Conference in Sacramento, Calif. The conference is only held once every 10 years.
“We are providing data points to what is already known about liquefaction in other areas,” Luna says.
Researchers and scientists have had plenty of chances to study what happens during and immediately after a major earthquake in well-shook places like California. But the last really big quakes in the Midwest occurred in 1812.
We do know that, due to differences in geography, major quakes in the Midwest are felt over a greater area than similar-sized quakes in California.
According to Luna, river silts in the New Madrid region are similar to those in earthquake-prone areas of China and India.
Last May, a devastating 7.9 earthquake caused extensive damage throughout the Sichuan province in the interior of China.
Lance Feyh | Newswise Science News
Gas hydrate research: Advanced knowledge and new technologies
23.03.2018 | Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum GFZ
New technologies and computing power to help strengthen population data
22.03.2018 | University of Southampton
Satellites in near-Earth orbit are at risk due to the steady increase in space debris. But their mission in the areas of telecommunications, navigation or weather forecasts is essential for society. Fraunhofer FHR therefore develops radar-based systems which allow the detection, tracking and cataloging of even the smallest particles of debris. Satellite operators who have access to our data are in a better position to plan evasive maneuvers and prevent destructive collisions. From April, 25-29 2018, Fraunhofer FHR and its partners will exhibit the complementary radar systems TIRA and GESTRA as well as the latest radar techniques for space observation across three stands at the ILA Berlin.
The "traffic situation" in space is very tense: the Earth is currently being orbited not only by countless satellites but also by a large volume of space...
An international team of researchers has discovered a new anti-cancer protein. The protein, called LHPP, prevents the uncontrolled proliferation of cancer cells in the liver. The researchers led by Prof. Michael N. Hall from the Biozentrum, University of Basel, report in “Nature” that LHPP can also serve as a biomarker for the diagnosis and prognosis of liver cancer.
The incidence of liver cancer, also known as hepatocellular carcinoma, is steadily increasing. In the last twenty years, the number of cases has almost doubled...
In just a few weeks from now, the Chinese space station Tiangong-1 will re-enter the Earth's atmosphere where it will to a large extent burn up. It is possible that some debris will reach the Earth's surface. Tiangong-1 is orbiting the Earth uncontrolled at a speed of approx. 29,000 km/h.Currently the prognosis relating to the time of impact currently lies within a window of several days. The scientists at Fraunhofer FHR have already been monitoring Tiangong-1 for a number of weeks with their TIRA system, one of the most powerful space observation radars in the world, with a view to supporting the German Space Situational Awareness Center and the ESA with their re-entry forecasts.
Following the loss of radio contact with Tiangong-1 in 2016 and due to the low orbital height, it is now inevitable that the Chinese space station will...
Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, provider of research and development services for OLED lighting solutions, announces the founding of the “OLED Licht Forum” and presents latest OLED design and lighting solutions during light+building, from March 18th – 23rd, 2018 in Frankfurt a.M./Germany, at booth no. F91 in Hall 4.0.
They are united in their passion for OLED (organic light emitting diodes) lighting with all of its unique facets and application possibilities. Thus experts in...
A new scenario seeking to explain how Mars' putative oceans came and went over the last 4 billion years implies that the oceans formed several hundred million...
23.03.2018 | Event News
19.03.2018 | Event News
16.03.2018 | Event News
23.03.2018 | Materials Sciences
23.03.2018 | Agricultural and Forestry Science
23.03.2018 | Physics and Astronomy