Lab 5.3 – Can wind direction data help us synthesize our observation from Activity 1 and 2?

Estimated time to complete: 45 minutes
Materials needed: None

In the previous two activities, we examined DO and seawater temperature and identified patterns of how they correlate with each other. By this point you probably have formulated some hypotheses as to what is happening to kill the crabs. In this activity we will add a third variable, northward wind direction speed. We will try to synthesize all of our observations to make a comprehensive hypothesis to explain why the crabs died.

Use the graph to answer the following questions. When you hover over a data point, a box will pop us with more information. You can turn zoom and out of areas of the graph using the slider bar. Note that the wind data shows only that part of the wind parallel to shore. Positive values indicate wind blowing to the north, negative values to the south.

[WIDGET 3]

Orientation questions

  1. What data does the x-axis represent? What does the y-axis represent?
  2. Find an example of a day when the winds were blowing to the north at over 10 m/s. What day was it?
  3. Find an example of a day when the winds were blowing to the south at over 8 m/s. What day was it?

Interpretation questions

Assessment questions

Reflection questions

  1. How are different marine organisms affected by these events?
    • Are some more vulnerable than others?
    • Which populations are especially vulnerable to long term population decreases, and which recover more quickly?
  2. In the wake of anoxic events, should humans enact regulations to help marine populations recover?

Real world application

People depend on seafood as part of their diets, especially in coastal communities. These events can have an economic impact on these communities.