Panama Canal expansion could impact Missouri ports

MODOT officials say the widened canal will open more freight shipment opportunities to Missouri.

Franklin School construction proceeds as planned

The $10 million project is being constructed next to the old school. It will open for the 2012 school year.

Dino's Pizza damaged by fire

The Cape Girardeau Fire Department estimates $250,000 in damages, but the building is not a total loss.

Mississippi River Basin nitrate pollution remains high

Nitrates flowing from the Mississippi River into the Gulf of Mexico contribute to the formation of areas known as dead zones.

Showing posts with label geology. Show all posts
Showing posts with label geology. Show all posts

Friday, May 13, 2011

Cairo won't crumble from sand boils, geologist says

CARBONDALE, IL (KRCU) - A professor at Southern Illinois University Carbondale says that Cairo, Illinois is not at risk of being overtaken by sand boils.

Dr. Nicholas Pinter is a professor in the Department of Geology at Southern Illinois University Carbondale. He’s an expert on flood hydrology and floodplain management. He says that the land beneath Cairo is not in danger of crumbling apart. The town’s real peril subsided when river levels dropped on the Ohio and Mississippi Rivers.

“They were and should have been worried when the waters were up. This was a major threat to the integrity of those very levees. And it’s a threat that increased as the water levels got higher. Now as the crests have passed, thank goodness here, the immediate threat from those features has subsided,” Pinter said.

Pinter says that the Birds Point floodway had the desired effect of reducing river levels at Cairo and 40 miles upstream. He believes that the Army Corps of Engineers could have opened the floodway earlier, which may have prevented flooding in the southern Illinois community of Olive Branch.

Moving forward, Pinter wants to see less intensive use of the floodway.

“Keep construction, infrastructure, and population out of that floodplain. Agricultural use of that land is absolutely appropriate. And that has been one of the major developments. That land has gone from partially used to very, very intensively used since the designing of the original system,” Pinter said.

Dr. Pinter believes that the levee should be reconstructed. He would like to see more land set aside for floodplains in order to mitigate future flood events.

Jacob McCleland, KRCU

Thursday, February 10, 2011

New Madrid Seismic Zone may have passed its energy on to other faults


Mian Liu on the site of May 2008 Wenchuan earthquake in Sichuan.
A new study suggests that the New Madrid Seismic Zone may not be as active as previously thought.

The study looked at 2,000 years of documented earthquakes in Northern China. Northern China is similar to the Midwest because it sits far from a plate boundary, yet still experiences frequent earthquakes.

It turns out that none of the Northern Chinese fault lines produced more than one earthquake during the 2,000 year period. According to one of the study’s co-authors, Mian Liu, a University of Missouri geosciences professor, the energy seems to move from one fault zone to another to another.

"The faults communicated with each other. Rather than looking at only one fault zone such as the New Madrid Fault Zone just because it produced an earthquake in the past, because if there is anything that we can learn from the Chinese data it’s that the large earthquakes in mid-continent migrate," Mian Liu said.

Following an earthquake, the study suggests that a mid-continental fault zone may pass through an extended period of inactivity. Meanwhile, another fault zone, perhaps 600 or 700 miles away, builds up the energy that produces the next big quake.

The study was published in the journal Lithosphere.


Jacob McCleland, KRCU
Photo courtesy of the University of Missouri