<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="14" name="coastal processes" parent="4" scope="oceanographic and geologic processes that cause changes to the shoreline and coastal zone."/><bt><term thcode="61" code="4" name="natural agents of coastal change" parent="3" scope="natural phenomena that cause changes in coastal processes, landscapes, and ecosystems."/><term thcode="61" code="3" name="agents of coastal change" parent="2" scope="natural phenomena and human activities that cause changes in coastal processes, landscapes, and ecosystems."/><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="18" name="coastal landsliding" parent="14" scope="used for both subaerial and submarine landsliding in the coastal zone."/><term thcode="61" code="15" name="currents" parent="14" scope="used for all ocean currents in the nearshore environment, including longshore, tidal, and rip currents."/><term thcode="61" code="19" name="river discharge" parent="14" scope="interpreted broadly to include the discharge of water, sediment, debris, and contaminants."/><term thcode="61" code="20" name="seiches" parent="14" scope="standing waves (&quot;sloshing&quot;) in an enclosed or partially enclosed body of water such as a lake, harbor, or bay; may be caused by strong winds or seismic disturbances."/><term thcode="61" code="21" name="storm surge" parent="14" scope="abnormal rise in sea level accompanying low-pressure weather systems such as tropical cyclones."/><term thcode="61" code="22" name="storms" parent="14" scope="low-pressure weather systems including tropical cyclones (hurricanes and typhoons) and extratropical cyclones (winter storms)."/><term thcode="61" code="26" name="tides" parent="14" scope="the cyclic rise and fall of sea level due to gravitational forces and the rotation of the Earth."/><term thcode="61" code="27" name="tsunamis" parent="14" scope="waves produced by submarine earthquakes or landslides, known informally as &quot;tidal waves&quot; (although unrelated to the tides)."/><term thcode="61" code="28" name="waves" parent="14" scope="used for waves acting as agents of erosion and sediment transport in coastal and nearshore environments."/><term thcode="61" code="29" name="wind" parent="14" scope="used for damaging winds that accompany winter storms and tropical cyclones."/></nt></descriptor>