{"thcode":2,"term":{"code":1799,"name":"coastal processes","parent":101,"scope":"Processes unique to coastal areas including longshore transport, beach erosion, storm surge, shoreline change, delta formation, barrier island migration, beach stabilization by vegetation"},"uf":[{"name":"beach erosion","usewith":{"code":353,"name":"erosion","parent":451,"scope":"The process whereby materials of the earth's crust are loosened, dissolved, or worn away and simultaneously moved from one place to another."}},{"name":"coastal erosion","usewith":{"code":353,"name":"erosion","parent":451,"scope":"The process whereby materials of the earth's crust are loosened, dissolved, or worn away and simultaneously moved from one place to another."}},{"name":"coastal hazards","usewith":{"code":531,"name":"hazards","parent":1174,"scope":"Potential dangers from both natural processes (e.g., earthquakes, floods, and climate change) and human impacts on the environment."}},{"name":"shoreline change","usewith":false},{"name":"shoreline erosion","usewith":{"code":353,"name":"erosion","parent":451,"scope":"The process whereby materials of the earth's crust are loosened, dissolved, or worn away and simultaneously moved from one place to another."}},{"name":"shoreline retreat","usewith":{"code":353,"name":"erosion","parent":451,"scope":"The process whereby materials of the earth's crust are loosened, dissolved, or worn away and simultaneously moved from one place to another."}}],"bt":[{"code":101,"name":"biological and physical processes","parent":1174,"scope":"All continuing activities, functions, and phenomena associated with organisms and non-living matter."},{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[{"code":2069,"name":"barrier island migration","parent":1799,"scope":"The slow, landward movement of barrier islands in response to sea level rise and repeated storm washover."},{"code":2070,"name":"coastal emergence","parent":1799,"scope":"Relative uplift of the coast accompanied by seaward displacement of the shoreline."},{"code":2071,"name":"coastal submergence","parent":1799,"scope":"Relative subsidence of the coast accompanied by landward displacement of the shoreline."},{"code":1801,"name":"longshore currents","parent":1799,"scope":"Movement of water parallel to the coast due to waves striking the shoreline at an angle"},{"code":2072,"name":"shoreline accretion","parent":1799,"scope":"Seaward migration of the shoreline resulting from the addition of earth materials."},{"code":2068,"name":"tidal currents","parent":1799,"scope":"Currents caused by tidal changes in water level from one body of water to another."}],"rt":[{"code":2073,"name":"mitigation of coastal hazards","parent":689,"scope":"Actions taken to reduce risk of physical disruption in coastal environments."},{"code":1730,"name":"storm surge","parent":398,"scope":"Coastal high water level caused by wind from storms."}]}