List two examples of hard stabilization and describe what each is intended to do. How does each affect the distribution of sand on a beach?
What will be an ideal response?
Groins are intended to maintain or widen beaches that are losing sand. However, the current erodes sand from the beach on the downstream side of the groin. Breakwaters are designed to protect boats from the force of large breaking waves. However, the reduced wave activity along the shore behind the structure can allow sand to accumulate, and the boat anchorage will eventually fill with sand while the downstream beach erodes and retreats.
You might also like to view...
Which PRECIP regime from Figure 17.3 is this? Which diagram should you use to evaluate this climate?
____________ include many different photosynthetic and chemosynthetic species that are responsible for contributing
to primary production. They drift or swim weakly, going where the ocean goes; whereas, ____________ can actively swim. Fill in the blank(s) with the appropriate word(s).
Which of the following is true of chiral drugs that are administered as single enantiomers?
A) They all have the R configuration. B) They all have the S configuration. C) Their enantiomers are always highly toxic. D) None of the above is correct.
Which of the following is correct regarding a wave in the open ocean?
A) Such waves are called waves of oscillation. B) Water particles move in an almost circular path. C) Waves do not exist in the open ocean — only near the coast. D) None of these