Ocean Circulation Concepts 16.1

Front

What are density currents?

Back

Density currents are ocean currents that are driven by differences in water density, which is affected by temperature and salinity.

Front

Which oceanic region is most affected by density currents?

Back

Polar regions are most affected by density currents due to the formation of cold, dense water.

Front

What is upwelling?

Back

Upwelling is the process where deep, cold, nutrient-rich water rises to the surface, often enhancing marine productivity.

Front

How does upwelling affect marine life in coastal regions?

Back

Upwelling brings nutrient-rich water to the surface, supporting abundant marine life.

Front

What factors can disrupt upwelling in coastal areas?

Back

Changes in wind patterns can disrupt upwelling by altering the movement of surface water.

Front

What are the effects of decreased upwelling on a coastal ecosystem?

Back

Decreased upwelling leads to lower nutrient availability and reduced fish populations.

Front

What is thermohaline circulation?

Back

Thermohaline circulation is the large-scale movement of water driven by differences in temperature and salinity, affecting global climate.

Front

How do density currents contribute to thermohaline circulation?

Back

Density currents move cold, dense water from the poles to the equator, playing a crucial role in thermohaline circulation.

Front

What is the significance of nutrient availability in marine ecosystems?

Back

Nutrient availability is critical for supporting marine life, as it influences primary productivity and food webs.

Front

What role do wind patterns play in ocean circulation?

Back

Wind patterns drive surface currents and can influence upwelling and downwelling processes.