sediment diversions

Tristan Baurick / Nola.com | The Times-Picayune

This week on the Coastal News Roundup, we take a look at barrier islands — what they do, and why the state is creating them artificially. Plus, we explore what less sediment in the Mississippi River could mean for coastal restoration and the return of a Jean Lafitte tradition: pirogue races.

Listening Coast

This week on the Coastal New Roundup: how the state of Louisiana sometimes benefits from coastal erosion. Plus, an update on the fight over sediment diversions in Plaquemines Parish.

Elizabeth Chamberlain / Vanderbilt University

According to new research, the Mississippi River delta will be much smaller in the future — even as the state plans to spend billions trying to rebuild it.

 

The researchers, led by Elizabeth Chamberlain — who is now at Vanderbilt after getting a PhD from Tulane — looked at how the Mississippi River used to build land thousands of years ago, which can illustrate how it might build land in the future. They took samples of sediment up and down Bayou Lafourche — which was the main river channel at the time.

Louisiana State University

LSU unveiled a big, new model of the lower Mississippi River Monday. It will be used to simulate floods and help the state figure out how to use the river to rebuild the coast.

Travis Lux / WWNO

More than 20,000 scientists from around the world came to New Orleans this week for the American Geophysical Union conference. From minerals and volcanoes to oceans, space, and climate change -- they presented all kinds of research.

 

Sara Sneath from Nola.com/The Times-Picayune was there. So was WWNO’s Travis Lux. This week on the Coastal News Roundup, they met up at the conference to talk about the latest in coastal research.