June 17, 2016 — A team of scientists and teachers last month deployed a small fleet of devices off Lucy Vincent Beach in the hope of tracking their journey to Narragansett Bay. Most of the 10 devices, known as ocean drifters, sailed past Noman’s Land and across Rhode Island Sound, confirming a link between Narragansett Bay and the waters south of the Vineyard.
Chris Kincaid, a professor of oceanography at the University of Rhode Island, and his colleagues have been trying to understand circulation within Narragansett Bay, which lies about 25 miles west of Vineyard Sound. Among other things, they hope to reveal the origin of the currents, along with the critical nutrients they carry.
“We know that there is a lot of nitrogen in the bottom water of Rhode Island Sound,” Mr. Kincaid told the Gazette this week. But he said those nutrients are mostly trapped at the bottom by changes in the water density. “To get marine growth, you need nitrogen to be where the sunlight is, near the surface,” he said. “Our hypothesis is that there’s a lot of material that fuels the ecosystem that comes in this coastal current from the area of Martha’s Vineyard.”
The study has a number of applications, including the tracking of oil spills and floating garbage. But the ultimate goal is fisheries management. The study has received funding from Rhode Island Sea Grant, a partnership that includes URI and the National Oceanic and Atmospheric Administration, which regulates offshore fisheries.