Ch 18: Coastal Hazards

About This Chapter

Watch video lessons and learn about natural hazards and how they affect the coastline. These engaging lessons are just a portion of our online study guide and video collection.

Coastal Hazards - Chapter Summary and Learning Objectives

Although life on the coast may sound idyllic, there are many natural hazards that can cause trouble. In this chapter's lessons, our knowledgeable and experienced instructors will guide you through a look at occurrences such as tsunamis and hurricanes, their effects on the coastal topography and what we can do about it. This chapter is designed to help you understand the following:

  • The formation of a hurricane and its effects
  • Causes and effects of tsunamis
  • Effects of coastal erosion and deposition on the shoreline
  • The use of hard stabilization structures
  • Alternatives to hard stabilization

Videos Objective
What Is a Hurricane? - Definition, Formation and Effects Define and describe the effects of storm surge, high winds and flooding resulting from hurricanes.
The Causes and Effects of a Tsunami Identify the cause of a tsunami and describe the effects on coastal features.
The Effects of Coastal Erosion on Shoreline Features Describe how coastal erosion affects shoreline features including wave-cut cliffs, wave-cut platforms and marine terraces.
The Effects of Deposition on Shoreline Features Describe how deposition affects shoreline features, such as spits, bars, tombolos and barrier islands.
Using Hard Stabilization on Shorelines Describe the use of hard stabilization, such as sea walls, groins and breakwaters to stabilize shoreline.
Alternatives to Hard Stabilization: Beach Nourishment and Relocation Describe acceptable alternatives to hard stabilization, such as beach nourishment and relocation in stabilization of the shoreline.

7 Lessons in Chapter 18: Coastal Hazards
What Is a Hurricane? - Definition and Formation

1. What Is a Hurricane? - Definition and Formation

Hurricanes are powerful storms with sustained winds over 74 miles per hour. They form over warm ocean waters. Learn facts about hurricanes, including how they form, why they rotate and how they get stronger.

Hurricanes: Categories and Effects

2. Hurricanes: Categories and Effects

Hurricanes are strong storms with sustained winds of more than 74 mph. There are 5 categories based on wind speed, with a Category 1 hurricane creating the least damage and a Category 5 creating the most. Learn about hurricanes and their destruction.

The Causes & Effects of a Tsunami

3. The Causes & Effects of a Tsunami

A tsunami is a powerful series of waves that result due to an abrupt disturbance, such as an earthquake. Learn how tsunamis form and grow and discover the devastating effects they can have on people and the environment.

The Effects of Coastal Erosion on Shoreline Features

4. The Effects of Coastal Erosion on Shoreline Features

Shorelines constantly change due to the pounding of waves that erode coastal structures. Learn about shoreline features that are formed through coastal erosion, such as wave-cut cliffs, wave-cut platforms, sea arches and sea stacks.

The Effects of Deposition on Shoreline Features

5. The Effects of Deposition on Shoreline Features

Shorelines constantly change due to the depositing of sand and sediment, which is a process known as deposition. Learn about shoreline features that are created by deposition, such as spits, baymouth bars, tombolos and barrier islands.

Using Hard Stabilization on Shorelines

6. Using Hard Stabilization on Shorelines

Shorelines erode under the force of waves. This changes beaches and can result in property damage. Learn about hard stabilization structures, such as groins, breakwaters and sea walls and how they are used to protect against erosion.

Alternatives to Hard Stabilization: Beach Nourishment & Relocation

7. Alternatives to Hard Stabilization: Beach Nourishment & Relocation

Coastal areas are subject to erosion from waves and wind. Hard stabilization slows erosion but disturbs the aesthetic beauty of the shore and alters the natural ecosystem. Learn here about alternatives, including beach nourishment and relocation.

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