Reference no: EM133934567
Assignment:
Coastal Topography
Chapter Twenty explores the familiar interface of the oceans (and to a lesser degree, lakes) with the continents. The topics revolve around the basic movements of ocean water and how each through the processes of erosion, transport and deposition creates the distinctive landforms of coastal areas. The physics of oscillation, convection, and gravity upon water are investigated to explain these movements and why this is the most dynamic of physical geographic landscapes that are studied in this course. The major topics are
- physics and impacts of waves
- tides
- coastal erosion
- currents and transport
- coastal deposition
- coastal landforms.Coastal Deposition and Transport
The lakeshore of Illinois is almost totally engineered and far removed from its original natural form. Even the one section set aside from development (established as Illinois Beach State Park in Zion) is subject to human manipulation to maintain its beaches. Please answer the questions below.
1. Explain wave refraction and how it affects the shape of a coastline.
2. Explain the process of littoral or beach drifting.
3. What is a groin? What is a jetty? Indicate how does the construction of each encourage beach growth?
4. Why do beaches naturally grow and recede and generally change shape over the course of a year?
5. Illinois Beach State Park has a water feature called Dead River, which is the only Illinois river that flows into Lake Michigan. From a geomorphological and littoral perspective, why would it get a name like that?