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Oceanography: Chapter 10

Terms in this set (34)

coast
extends from shore to inland
coastline
boundary btwn shore and coast (sands end)
beach (location)
from breakers to coastline
shore
area from low tide line to coastline
foreshore
area btwn high and low tide
backshore
area above high tide shoreline to coastline
nearshore
area from low tide line to breakers
offshore
area beyond breaker zone
beach
wave-worked sediments; deposit of shore area
wave-cut bench
flat, wave eroded surface
recreational beach
area above shoreline
berm
dry, gently sloping region at the foot of cliffs
beach face
wet, sloping, from berm to shoreline
longshore bars
sand bars paralleling the coast
longshore trough
a dip separating the bar from beach
swash
top layer of water rushing up the beach face
backwash
water draining back to sea
longshore current
zig zag movement of water along the coastline
longshore drift
movement of sediment due to current
headlands
jut out of continent (Peninsula)
wave cut cliff
waves cause steep collapsed coastline
sea cave
wave carved opening at base of cliff
sea arches
openings in headlands
sea stack
crumbled sea arches
marine terrace
gentle slope into the sea
spit "spine"
linear ridge of sediment that extends in the direction of longshore drift
bay barrier
spit extends and connects to mainland
tombolo
sand ridge connecting island to mainland
barrier islands
long offshore deposits of sand that parallel coast
delta
triangle shaped river deposit
groins
built perpendicular to coasts; built to trap/stop moving sand
jetties
similar to groin; near harbors; usually made of roc, cement, and/or rip-rap
breakwater
parallel to shoreline; blocked to construct harbors. Made from metal, rock and cement.
seawall
a wall to protect coastlines
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