Geology #22

Geology #22
April 28th, 2016

For optional 22, it wanted me describe the four main types of coastal zones.  They are rocky, sandy, coral, and wetland.

Rocky Coastal Zone: Rocky coasts are continuously cut back by the sea and are characterized by erosion features. They have a slow rate of morphological change, and experience the main erosion processes of: mechanical wave erosion, abrasion and hydraulic action; weathering - physical, salt, chemical and water-layer leveling; bio-erosion - biochemical and biophysical; and mass movements by rock falls and toppling, slides and flows.
weblink:  http://www.marbef.org/wiki/coastal_zone_characteristics

Sandy Coastal Zone: Sand is a very common marine sediment and is transported along the shoreline by littoral transport. Sand transport (littoral transport or littoral drift) is driven by the breaking waves and the long shore currents in the wave breaking zone. The appearance of a natural sandy beach is determined by hydrographic conditions and geology. Any interference will cause a reaction in the form of a shoreline response. Therefore, understanding of physical processes is important and the development of suitable solutions required, supported by numerical modelling if needed.
weblink: http://www.marbef.org/wiki/coastal_zone_characteristics

Coral Coastal Zone/Coral Reef: https://en.wikipedia.org/wiki/Coral_reef

Wetland Coastal Zone: https://www.epa.gov/wetlands/coastal-wetlands

What are the features of waves like: crest, wavelength, trough, wave height/amplitude.

Wave Crest/Wave Trough: http://www.everythingmaths.co.za/science/grade-10/08-transverse-waves/08-transverse-waves-03.cnxmlplus & http://www.physicsclassroom.com/class/waves/Lesson-2/The-Anatomy-of-a-Wave

Wave Wavelength: http://www.physicsclassroom.com/class/waves/Lesson-2/The-Anatomy-of-a-Wave

Wave Height/Amplitude: http://www.physicsclassroom.com/class/waves/Lesson-2/The-Anatomy-of-a-Wave

What causes waves?
weblink: http://oceanservice.noaa.gov/facts/wavesinocean.html

What causes tides?
weblink: http://oceanservice.noaa.gov/education/kits/tides/tides02_cause.html

What is coastal erosion and how can we protect our coasts from becoming severely eroded away?
weblink: https://en.wikipedia.org/wiki/Coastal_erosion & http://www.coastalwiki.org/wiki/Protection_against_coastal_erosion