Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

What We Don't Know About Liquefaction Could Hurt Us

21.08.2008
In one corner of a huge civil engineering laboratory on campus, Dr. Ronaldo Luna watches a machine shake silt from the Mississippi River until it liquefies.

“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
Further information:
http://www.mst.edu

Further reports about: Earthquake Liquefaction Luna Mississippi earthquake-prone areas river silts

More articles from Earth Sciences:

nachricht New Study Will Help Find the Best Locations for Thermal Power Stations in Iceland
19.01.2017 | University of Gothenburg

nachricht Water - as the underlying driver of the Earth’s carbon cycle
17.01.2017 | Max-Planck-Institut für Biogeochemie

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Helmholtz International Fellow Award for Sarah Amalia Teichmann

20.01.2017 | Awards Funding

An innovative high-performance material: biofibers made from green lacewing silk

20.01.2017 | Materials Sciences

Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery

20.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>