<descriptor thcode="61"><thesaurus thcode="61" name="Marine Realms Information Bank (MRIB) keywords" scope="Theme keywords from the former Marine Realms Information Bank, focusing on characteristics of coasts and oceans, processes acting on them, and human concerns about them." creator="U.S. Geological Survey" rights="Public domain" date="2016-09-07" codetype="number" prefix="mrib" tblname="mrib" nonpref="mribnp" relterm="mribrt" root_code="1" contact="aallwardt"><category><term thcode="25" code="27" name="types" parent="26" scope="Terms are types of things rather than named instances"/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/><term thcode="25" code="13" name="transitive" parent="12" scope="Narrower terms have an &quot;is a&quot; relationship with their broader terms, and generally can be described as part-of, type-of, or instance-of the broader term."/><term thcode="25" code="5" name="theme" parent="2" scope="Terms indicate domains of human concern, such as scientific discipline, societal problems, or characteristics of earth, space, oceans, and living things."/><term thcode="25" code="21" name="disciplines" parent="2" scope="Broad categories of human inquiry or activity, such as scientific disciplines."/><term thcode="25" code="20" name="methods" parent="2" scope="Actions taken to obtain or analyze information"/><term thcode="25" code="27" name="types" parent="26" scope="Terms are types of things rather than named instances"/><term thcode="25" code="16" name="hierarchical" parent="11" scope="Substantive broader-narrower relationships exist among the terms."/><term thcode="25" code="13" name="transitive" parent="12" scope="Narrower terms have an &quot;is a&quot; relationship with their broader terms, and generally can be described as part-of, type-of, or instance-of the broader term."/><term thcode="25" code="5" name="theme" parent="2" scope="Terms indicate domains of human concern, such as scientific discipline, societal problems, or characteristics of earth, space, oceans, and living things."/><term thcode="25" code="21" name="disciplines" parent="2" scope="Broad categories of human inquiry or activity, such as scientific disciplines."/><term thcode="25" code="20" name="methods" parent="2" scope="Actions taken to obtain or analyze information"/></category><altlabel><altlabel>MRIB keywords</altlabel><altlabel>MRIB keywords</altlabel><altlabel>Marine Realms Information Bank keywords</altlabel><altlabel>Marine Realms Information Bank keywords</altlabel></altlabel></thesaurus><term thcode="61" code="57" name="effects of coastal change" parent="2" scope="changes in coastal processes, landscapes, and ecosystems."/><bt><term thcode="61" code="2" name="coastal change hazards topics" parent="1"/><term thcode="61" code="1" name="Marine Realms Information Bank (MRIB) keyword categories"/></bt><nt><term thcode="61" code="58" name="barrier island migration" parent="57" scope="the slow, landward movement of barrier islands in response to sea level rise and repeated storm washover."/><term thcode="61" code="59" name="coastal emergence" parent="57" scope="exposure of the coast caused by a fall in relative sea level."/><term thcode="61" code="66" name="coastal saltwater intrusion" parent="57" scope="landward movement of the saltwater-freshwater interface in a coastal aquifer."/><term thcode="61" code="72" name="coastal submergence" parent="57" scope="inundation of the coast caused by a rise in relative sea level."/><term thcode="61" code="60" name="flooding" parent="57" scope="inundation of coastal areas by waves, tsunamis, extreme tides, or river discharge."/><term thcode="61" code="61" name="habitat alteration" parent="57" scope="includes changes to marine, terrestrial, and freshwater habitats in the coastal zone."/><term thcode="61" code="67" name="shoaling" parent="57" scope="the shallowing of coastal sea floor."/><term thcode="61" code="68" name="shoreline accretion" parent="57" scope="seaward migration of the shoreline resulting from the addition of earth materials."/><term thcode="61" code="69" name="shoreline erosion" parent="57" scope="landward migration of the shoreline resulting from the removal of earth materials."/></nt></descriptor>