- StudyBlue
- North Carolina
- University of North Carolina-Wilmington
- Environmental Studies
- Environmental Studies 195l
- Shew
- Beach Profiles and Definitions for Coast Issues
Beach Profiles and Definitions for Coast Issues
Environmental Studies 195l with Shew at University of North Carolina-Wilmington
About this deck
By: Alexandra Booker
Created: 2011-04-26
Size: 28 flashcards
Views: 17
Created: 2011-04-26
Size: 28 flashcards
Views: 17
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy
Kathy
Sign up (free) to study this.
Barrier Island
long, narrow, sandy accumulation site separated from the mainland by water
Barrier Spit
sand deposited by longshore transport at one end of an island (recurved)
Bathymetry
topography of the seafloor
Beach
the zone of sediment transport and accumulation of unconsolidated material; extends from the Mean High Water to a 29' water depth=the zone of sand movement
Beach Profile
intersection of the ground surface with a vertical plane; shape of beach
Ebb-Tidal Delta
deposit of sand seaward of tidal inlet, formed from sand carried seaward
Erosion
wearing away of land by natural forces (waves, wind, flowing water, etc)
Erosion Rate
rate at which the ocean side of the barrier island or beach is moving landward; the average value is 3' in NC but min. for considering setback is 2'
Estuary
semi-enclosed body of water where river water mixes with ocean water
Eustatic Sea Level
worldwide changes in sea level (glaciers, melting, etc); last cent. the sea level rose 8-10"
Flood-Tidal Delta
deposit of sand landward of tidal inlet formed when sand is carried into the inlet
Groin
low, narrow, hardened, jetty-like feature perpendicular to the shoreline that is designed to trap sand and is not located at the inlet; NOT allowed in NC except for the grandfathered ones
Inlet
short, narrow waterway between islands; important for exchange of water, sediment, and nutrients
Intertidal Zone
land area alternately inundated and uncovered by tides (MeanLow to MeanHighWater)
Jetty
structure at an inlet, almost perpendicular to shore, to protect inlet for navigation purposes; navigation structure solely designed to control channel shoaling, position, and alignment.
Longshore Transport
movement of sediment along the shoreline due to waves and currents generated by wind; dominantly from N to S on the E coast; varies depending on wind directions and storms
Morphology
shape of an island or land feature
ex. Masonboro "protrudes" at the inlets due to the activity of the ebb tide deltas and is concave landward in the middle of the island
Renourishment
process of replenishing a beach with sand, usually from dredging and pumping sand into the beach
Overwash or Washover fan
material that is transported from the beach across the island during storms; sand/shells are deposited on the back said of the island leading to the island migrating landward-this is termed island ROLLOVER; the overwash is fan shaped
Relative Sea Level
local changes in sea level as a result of local subsidence, delta building or movement, tectonic movements, and/or isostatic adjustment with glacier advance or retreat
Rollover
movement of the beach/barrier island landward by overwash; natural process that occurs with seal level rise, subsiding coasts, and with storms
Sandbags
allowed for the "temporary" protection of the beachfront prop in NC
Seawall
coast parallel hard structure connected to shoreline to protect shore from waves; banned in NC except for those grandfathered in or for the protection of significant structures (FORT FISHER)
Set-back
distance required for structures to be "set-back" or to be placed landward of the primary dune line; 30x the erosion rate for all structures less than 5,000 sq ft, 5,000 to 10,000 is 60x ER; in ALL cases, the min erosion rate is considered to be 2 ft/yr
Terminal Groin
relatively new term for a low-slung structure at the ends of islands to catch sand; a protection device for selected ares; there are 2 IN NC (FORT MACON AND PEA ISLAND); shore protection structure which can provide some navigation benefits.
Tidal Range
difference in height between consecutive high and low tides; tidal range in SE NC is 3.8' with the spring tide having a 4.5' range
CAMA
coastal area management act
CRC
coastal resources commissions; makes sure they enforce CAMA's acts
About this deck
By: Alexandra Booker
Created: 2011-04-26
Size: 28 flashcards
Views: 17
Created: 2011-04-26
Size: 28 flashcards
Views: 17
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have been getting MUCH better grades on all my tests for school. Flash cards, notes, and quizzes are great on here. Thanks!”
Kathy
Kathy