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Hydrology Vocabulary
Term | Definition |
---|---|
Erosion | The wearing away of land by wind or water |
Deposition | The buildup of a substance |
Sediment | Particles derived from rocks or biological materials due to erosion and weathering |
Sedimentation | The accumulation of sediments |
Tributary | A river or stream flowing into a larger body of water |
Meander | A winding bend or curve in a river |
Drainage Basin | The area of land that drains water, sediment, and dissolved materials to a common outlet |
Alluvial Fan | A deposit of sediment that's cone-shaped and is built up by streams or flowing water |
Delta | Thenearly flat and low tract of land at or near the mouth of a river due to accumulation of sediment |
Water Table | The level of groundwater |
Ocean Current | The way that a part of the ocean moves |
Upwelling | The process when water rises from a deep to a shallower depth, stirring the water and mixing the nutrients |
Coriolis Effect | A force that's a result of earth's rotation which deflects objects to the right in the northern hemisphere and to the left in the southern hemisphere |
Shoreline | The line along which a large body of water meets the land |
Sea Level | The long-term average position of the sea surface |
Barrier Island | A long and sandy island that runs parallel to a coastline and serves to protect the shore from erosion |
Continental Shelf | The area of seabed around a large landmass where the sea is relatively shallow compared with the open ocean |
Continental Slope | The incline or decline between the outer edge of the continental shelf and the deep ocean floor |
Saturated | Holding as much water or moisture as can be absorbed |
Infiltration | The penetration of water through the ground surface into sub-surface soil |
NC River Basins | North Carolina's land area drained by a river and its tributaries |
Water Treatment Systems | The industrial-scale processes that makes water more acceptable for an end-use |
Water Cycle | The process in which water circulates throughout Earth over and over again |
Continental Rise | The transitional area of the continental margin between the continental slope and abyssal plain |
Abyssal Plain | The broad, flat area of seafloor at the deepest part of an ocean basin |
Seamount | Conical mountain rising 1000 m or more above the sea floor |
Contamination | Introduction into water, air, and soil of microorganisms, chemicals, toxic substances, wastes, or wastewater in a concentration that makes the medium unfit for its next intended use |
Porosity | The ratio of the volume of the voids of a soil or rock mass that can be drained by gravity to the total volume of the mass |
Permeability | The rate at which liquids pass through soil or other materials in a specified direction |
River Basin | The land area drained by a river and its tributaries |
Wetland | Land consisting of marshes or swamps |
Runoff | The draining away of water from the surface of an area of land |
Water Pollution | The presence in water of harmful or objectionable material in sufficient quantity to measurably degrade water quality; Contamination of water |
Surface Water | All water naturally open to the atmosphere |
Groundwater | The supply of fresh water under the Earth's surface that forms a natural reservoir |