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Barrier Island Terms

Terms

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Primary Dune
Foredune
Submergent Coast
Land that has been drowned by sea level rise, heavy sediment on top of bedrock
Mississippi
North American delta
Island Migration
Movement of barrier islands
Tidal Zone
Area of beach between high and low tide
Salinity
Measure of salt in water
Brackish
Mix of salt and freshwater
Longshore Current
Hits Beach at an angle, moving sand parallel to coast
Spartina
Cord grass in salt marsh
Salt Marsh
80% of all seafood taken in N.C. spends time here; Nursery and Feeding Ground
Adaptation
Changing accordingly to your surroundings
Sediment
Sand, soil or organic matter
Eutrophication
Causes loss of oxygen in waters
Flow
Low to high tide
Ebb
High to low tide
Tide
Caused by moon's gravitational pul
Ghost Crab
Crab in sand dune-Nocturnal, Burrows in Sand, Scavenger, Has Gills
Secondary Coast
Shaped by wave erosion or marine life and formed by processes ocurring at sea
Current
Partially cause by ocean convection; This might help but it might confuse you (if it confuses you ignore it, if it helps use it)-The "Pull" of the tides- I hope that helps
Emergent Coast
Land that has been lifted, typically rocky shorelines
Erosion
Removal of land by action of ise, wind, or water
Freshwater Lense
Freshwater resting on top of salt water under Barrier Islands
Ebb
High to low tide
Overwash
Washes over the barrier island depositing sediment directly to the sound side of the island
Glacial Meltwater
Carried sediment to form first barrier islands
Delta
Sediment deposit at the mouth of a river
Snowy Egred
Bird Living in Salt Marsh; Doesn't have a curved bill
Inlet
Allows sea water to enter the sound
Cape
Land mass that "juts" into the ocean
Primary Coast
Rough, irregular and formed by processes occuring on land
Maritime Forest
Oldest and most stable barrier island zone
Atlantic Ribbed Mussel
Uses byssal threads to root themselves into mud; Opens shells at hightide to get nutrients and close them at lowtide
White Ibis
Has curved bill to hunt in mud
Detritus
Dead, rotting organic matter
Salt Pruning
Shapes and slpoes plants; salt stops/kills growth
Marsh Peat
Evidence of island migration
Barrier Island
Formed about 18,000 years ago at the end of last Ice Age; Formed by waves, currents, tides, wind, sea level change, storms

Deck Info

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