Which risk increases when a major oceanic gyre's rotational speed slows down significantly?

💡 Explanation

When gyre rotational speed decreases, the Ekman transport weakens because wind-driven surface currents are less effectively circulated, leading to inefficient upwelling. Therefore, nutrient upwelling disruption increases, rather than increased erosion, debris transport, or increased salinity which depend on different environmental forcing functions.

• Which effect results when trade winds approach the equator in a Walker circulation cell?
• Which outcome results due to intensified physical weathering during pedogenesis?
• Which outcome commonly results when alluvial riverine plains experience incision?
• Which impact follows accelerated oxbow lake formation near pipeline infrastructure when a river alters course?
• Following months of increased stress, which outcome primarily results during stick-slip behavior along fault lines?
• Which mechanism maintains magma convection within Earth's mantle beneath volcanic hotspots?