EVSC 1010 Lecture Notes - Lecture 20: Rocky Shore, Isostasy, Littoral Zone
6 Aug 2016
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Document Summary
Transference of energy winds above surface of water onto water. Circular motion of water vertical circulation: extends to half of wavelength wave base. Mixing of surface waters in the thermocline. Waves approach shoreline more and more shallow: reach water depths that is more than half of the wavelength. Depth 1/7 of wavelength: wave breaks erosion deposition at the seafloor. Because coastlines aren"t perfectly straight and waves don"t approach shoreline perpendicularly: waves appear as bent refraction. Erosional landforms: associated with rocky shore lines. Rocky shore lines active tectonic boundaries such as the. Ex) maine british isles/scandinavia passive coastal margins. Isostasy continental ice sheets are melted and now the ground is rebounding to its equilibrium following the end of the last glacial period: notch where erosion occurs. Bays areas of greater erosion: waves break at headlands but water waves carry sediments to the bay creates a beach.
