“The Great Lakes lack the predictable regularity of tides; a combination of factors including winds, temperature and current depth influence currents. Combined, these factors cause a complex, spiraling water flow, producing a type of interior (rather than surface) waves called inertial waves.The researchers hypothesize that the inertial waves are the primary mechanism governing the movement and dispersion of particles. ‘You can get currents as strong as a half-meter per second in the middle of Lake Michigan,’ Cary Troy of Purdue’s School of Civil Engineering said prior to the study. ‘The effect is strongest in the middle of each of the Great Lakes, so that’s why we are doing the research there.’‘The goal is to do dye-release experiments and to track the dye patch over time to see where it diffuses and where it moves and to relate that to the information we have about the lake currents and waves,’ Troy said. ‘One obvious application is for something like an oil spill or any sort of contaminant spill in the Great Lakes. If you have a spill, you need to predict where it’s going to go and how quickly it’s going to dissipate.'”
Recent News
- New aquaponics curriculum brings STEM and sustainable agriculture to the classroom
- Illinois-Indiana Sea Grant welcomes new coastal engineering and community resilience specialist
- Meet our Grad Student Scholars: Xiaoli Xing
- IISG accepting applications for 2025 Graduate Scholars
- Illinois-Indiana Sea Grant communications coordinator joins the team
IISG Instagram
Meet IISG grad student scholar, Xiaoli Xiong! Xiaoli is a Ph.D. student in the School of Construction Management Technology at Purdue University and a recipient of the Ross Fellowship. He works under the guidance of Chengcheng Tao in the Sustainable Infrastructure and Manufacturing Lab. Xiaoli’s research focuses on the sustainable manufacturing of cement and concrete materials. Xiaoli’s IISG project investigates the feasibility of incorporating dredged sediments from Lake Michigan into cement mortar, aiming to use waste materials to develop more environmentally friendly cementitious products.
Read more about Xiaola’s work at the link in bio.

Valentine’s Day is almost here, and we’ve got you covered! Share our valentine with the one who makes your heart buoyant! 💌
And catch up on all the latest IISG news at the link in bio.

Join us in welcoming IISG’s new coastal engineering and community resilience specialist, Sarah Peterson! Sarah’s chief responsibility will be to develop a coastal resilience program along the southern Lake Michigan shoreline.
Read more about Sarah and her work at the link in bio.

Attention educators! Only 2 days left to apply!
Got summer plans? The Shipboard Science Workshop takes place each year on one of the Great Lakes, and 2025 is Lake Michigan’s turn! Take advantage of this opportunity to work alongside scientists and fellow-educators aboard the EPA R/V Lake Guardian to engage in real-world research and data collection, enhance your skills, and create innovative lessons.
5-12th grade formal and informal educators from all Great Lakes states are invited to apply for this FREE shipboard workshop sponsored by the EPA Great Lakes National Program Office and facilitated by Great Lakes Sea Grant Network educators
Workshop dates: July 7-13, 2025
Application deadline: Feb. 10.
Learn more at the link in bio.
