ZOL 303 Lecture Notes - Lecture 15: Global Warming, Paper Cup, Sediment Transport
Document Summary
Coasts shaped by earth movements: faults and folds, ex. San francisco bay: c. land-erosion coasts, result of sea level rise from pleistocene to present, 1. Fjords, puget sound: sea level rise floods fjords and extends coastline, d. subaerial deposition coasts, 1. Glacial deposition coasts: moraines, a mound of till deposited by glacial ice, ex. Wave erosion coasts: coasts shaped primarily by wave erosion, wave erosion cliffs, irregular wave dominated coastline, b. Marine deposition coasts: formed by accumulation of sediments by wave action, beaches, islands, barriers, etc, tend to become straight, c. coasts formed by biological activity, coral reefs, oyster reefs, mangroves, and marshes. Degree of exposure: coasts fully exposed receive higher wave energy, rugged cliffs likely, high energy vs. low energy coasts, frequency of attack by large waves, 2. Tidal range: regions of smaller tidal ranges experience more erosion, wave energy not spread out over a great distance.
