Which outcome is directly caused by coastal upwelling events along continental margins?

💡 Explanation

When upwelling occurs, nutrient-rich deep water rises to the surface through wind-driven mechanisms, increasing nutrient availability that supports intense phytoplankton growth. Therefore increased productivity results, rather than deoxygenation, canyon formation or erosion which require different environmental conditions or mechanisms.

• Which mechanism causes deep-water oxygen depletion in poorly mixed fjords with high organic matter input?
• Which outcome occurs when strong temperature gradient appears in the upper troposphere during winter?
• Which deformation threat arises from saturated permafrost thaw?
• Which atmospheric phenomenon results when the subtropical jet stream weakens poleward of Hadley cells during summer?
• Which outcome is most accelerated by increased sediment load into an alluvial fan system?
• Which mechanism causes differential erosion rates along the walls of a fjord during glacial retreat?