EARTHSC 2GG3 Lecture Notes - Lecture 13: Coastal Erosion, Continental Shelf, Frequency
11 Sep 2018
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Document Summary
Introduction to coastal hazards: terrestrial and oceanic processes converge to produce landscapes that can change rapidly, many coasts are influenced by plate tectonics, the east coast of north america and the canadian arctic are located on passive. Waves: wave height: distance between the trough and the crest of a wave, wavelength: distance between successive wave crests, wave period: time in seconds for successive waves to pass a reference pt. Isostatic causes: the weight of ice or water on the crust changes, change in thickness of lithosphere, glacio-isostatic uplift: caused by unloading of glacial ice, hydro-isostatic uplift: caused by unloading of continental shelves due to eustatic sea-level lowering. Cliff erosion: sea cliffs and lakeshore bluffs can be eroded by waves and landslides, causes the shoreline to move landward, most erosion occurs during storms, bluff erosion on the great lakes is most severe during high water levels.
