Author Question: Seaweed derived materials are found in a large variety of commercial materials including adhesives, ... (Read 109 times)

fbq8i · **on:** Aug 22, 2018

Seaweed derived materials are found in a large variety of commercial materials including adhesives, salad dressing, and ice cream.
Indicate whether the statement is true or false

Question 2

Describe how wind can induce upwelling and downwelling near coastal cities? Give an example for each.

heinisk01 · **Reply #1 on:** Aug 22, 2018

Answer to Question 1

True

Answer to Question 2

Wind blowing parallel can cause either coastal upwelling or coastal downwelling. The friction of wind blowing along the ocean surface causes the water to begin moving, the Coriolis effect deflects currents to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. The resultant Ekman transport moves surface currents either offshore or onshore depending on the direction of surface winds. Coastal upwelling occurs when surface currents move offshore and is replaced by water rising along the shore, whereas coastal downwelling occurs when surface currents move onshore and pushes coastal water downward. If winds are blowing to the north along the west coast of South America, surface currents will be deflected to the left (offshore) and cold, nutrient-rich waters will take its place producing coastal upwelling. On the other hand, if winds are blowing to the north along the west coast of North America, surface currents will be deflected to right (onshore) and will push coastal water downward producing coastal downwelling.