September 23, 2026 — The Gulf of Alaska is particularly vulnerable to the effects of events like marine heatwaves and El Niños, which can devastate its lucrative fisheries. But a new study has found El Niños can offer some benefits to the Gulf of Alaska.
Élise Beaudin is a physical oceanographer at a research facility called Ocean Networks Canada in British Columbia, and a lead author on the study, which was published in the Journal of Physical Oceanography on Sept. 10. Her research focused on what’s called the Alaska subpolar gyre, which is basically a giant counterclockwise swirl of water, thousands of miles wide, that goes around the Gulf of Alaska and into the waters around eastern Russia.
She said she was interested in studying the subpolar gyre for two reasons. The Gulf of Alaska provides critical habitat for Alaska’s fisheries. And she said it’s also interesting because of the way water circulates.
“The center of the subpolar gyre in Alaska, is extremely depleted in nutrients, especially micronutrients,” Beaudin said.
Those nutrients, like iron, silicate, and nitrate, are essential for phytoplankton, which are the base of the food chain that feeds everything else in the ocean. Beaudin said the phytoplankton living in the nutrient-depleted areas survive because of eddies, which are smaller rotating swirls inside of the gyre.