Shorelines and Shoreline Processes

Also known as flood tide

Also known as ebb tide

control how much of the shore is effected by wave action

tidal waves are caused by ocean tides, tsunamis are caused by seismic waves

erodes and transports sediment

Also known as crest

Also known as trough

Difference between crest and trough

wind velocity, wind duration, and the fetch

the wave base

wave base = L/2

deep water, intermediate, and shallow water waves

When reached by nearshore waves, wave velocity and wave energy decrease, while wave height increases

waves that approach parallel to the shoreline and get bent by friction

Movement of sediment parallel to shore when waves approach the shoreline at an angle

baymouth bar/spit

beach face, berm, dunes and lagoon

wave erosion produces sea coasts

A gently sloping surface

wave cut and wave built

Ridges of sand that parallel mainland & exist seperate from mainland thanks to lagoon.

Changing wave conditions

The berm changes in width seasonally

short walls built perpendicular to shore to restrict sediment transport.

Structures built off shore & built parallel to shore. Gets less deposition then groins.

rock walls designed to protect the inlands

Consists of steep rocks or soluble rock. (wave cut cliffs, sea stacks, arches, headlands)

Coastal straightening

seastacks and arches

the melting of glaciers

building structures too close to water, ocean dumping, overfishing

Emergent Coast & Submergent Coast (VA Beach)

Marine terrace

Estuary