“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
"Flight recorder" of rocks within the Earth’s crust
16.04.2019 | Universität Bern
More than 90% of glacier volume in the Alps could be lost by 2100
09.04.2019 | European Geosciences Union
A stellar flare 10 times more powerful than anything seen on our sun has burst from an ultracool star almost the same size as Jupiter
A localization phenomenon boosts the accuracy of solving quantum many-body problems with quantum computers which are otherwise challenging for conventional computers. This brings such digital quantum simulation within reach on quantum devices available today.
Quantum computers promise to solve certain computational problems exponentially faster than any classical machine. “A particularly promising application is the...
The technology could revolutionize how information travels through data centers and artificial intelligence networks
Engineers at the University of California, Berkeley have built a new photonic switch that can control the direction of light passing through optical fibers...
Physicists observe how electron-hole pairs drift apart at ultrafast speed, but still remain strongly bound.
Modern electronics relies on ultrafast charge motion on ever shorter length scales. Physicists from Regensburg and Gothenburg have now succeeded in resolving a...
Engineers create novel optical devices, including a moth eye-inspired omnidirectional microwave antenna
A team of engineers at Tufts University has developed a series of 3D printed metamaterials with unique microwave or optical properties that go beyond what is...
17.04.2019 | Event News
15.04.2019 | Event News
09.04.2019 | Event News
18.04.2019 | Life Sciences
18.04.2019 | Physics and Astronomy
18.04.2019 | Life Sciences