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 mechanism explains how strike-slip faults accommodate tectonic plate movement, but still generate earthquakes?
• Which mechanical result primarily occurs when a fault rupture propagates to the earth's surface along a strike-slip fault?
• Which effect intensifies coastal erosion during an El Niño event on the western coast of South America?
• Which risk increases when increased freshwater runoff disrupts the density gradient within a subtropical gyre?
• Which risk increases within flood control channels constructed atop karst bedrock regions?
• Which outcome occurs when a newly formed barrier island restricts lagoon water exchange?