XIV. Shorelines

1. basics
   1. wavelength
   2. wave base
2. types of waves
   1. swells
   2. breakers; surf

1. erosional
1. coastal straightening (fig. 20-4, 20-5)
   
2. wave-cut cliffs, wave-cut platform (fig. 20-7, 20-26)
3. sea cave/sea arc/sea stack (fig 20-6, 20-1)
   
2. depositional beaches (fig. 13.11)
   1. motion of water and sediment  (fig. 20-12)
      
      • longshore current
      • beach drift
   2. sand bars parallel to shore (fig 20-16)
      
   • spits (fig 20-17)
     
   • baymouth bars
   • barrier islands (fig. 20-20)
     
   3. tombolo (fig 20-16, 20-18)
   4. human effects (fig. 20-22)
      • groin 
      • breakwater
3. carbonate beaches
   1. local source of sand
   2. coral reefs (fig 20-29)
      
   3. atolls (fig 20-31)