{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.plain","code":"thing-q160091","url":"https://ver.cy/models/thing/q160091/","name":"plain","alternateNames":["fajã","achada","palus","fluctus","depositional plain","plain in Korea","plains of Italy","piedmont","lacuna","Plains of Japan","planitia","till plain"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.PLC"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A broad area of relatively flat land with little relief, formed by deposition, erosion or lava flows, such as floodplains, coastal plains and plateaus; on other planets similar features are named palus or planitia.","purpose":"Let an agent handle plains by type, formation, land use, hazards and planetary analogues.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Flat or gently sloping","Large extent","Often fertile","Floodplains flood by nature"],"structure":{"bundles":[{"id":"type","name":"Type","description":"Which plain.","layers":[{"id":"kind","name":"Kind","description":"Floodplain, coastal.","findings":[{"id":"kind-finding","name":"Kind","description":"Plain type.","questions":[{"text":"What kind of plain is it?","kind":"definition"},{"text":"How did it form?","kind":"provenance"}]}]},{"id":"extent","name":"Extent","description":"Size.","findings":[{"id":"extent-finding","name":"Extent","description":"Extent.","questions":[{"text":"How large is it?","kind":"measurement"},{"text":"What is its elevation range?","kind":"measurement"}]}]}]},{"id":"use","name":"Use","description":"Land use.","layers":[{"id":"farming","name":"Farming","description":"Agriculture.","findings":[{"id":"farming-finding","name":"Farming","description":"Agriculture.","questions":[{"text":"How is the plain farmed?","kind":"definition"},{"text":"What soils does it have?","kind":"definition"}]}]},{"id":"settlement","name":"Settlement","description":"Towns and transport.","findings":[{"id":"settlement-finding","name":"Settlement","description":"Settlement.","questions":[{"text":"Which settlements and routes use it?","kind":"definition"},{"text":"How has use changed?","kind":"provenance"}]}]}]},{"id":"hazards","name":"Hazards","description":"Flood and wind.","layers":[{"id":"flood","name":"Flood","description":"Floodplain risk.","findings":[{"id":"flood-finding","name":"Flood","description":"Flood risk.","questions":[{"text":"Is this land in a flood zone?","kind":"boundary"},{"text":"Which authority maps it?","kind":"provenance"}]}]},{"id":"erosion","name":"Erosion","description":"Wind and soil.","findings":[{"id":"erosion-finding","name":"Erosion","description":"Soil erosion.","questions":[{"text":"Is wind erosion a risk?","kind":"boundary"},{"text":"How is it controlled?","kind":"action"}]}]}]},{"id":"planetary","name":"Planetary","description":"Other worlds.","layers":[{"id":"names","name":"Names","description":"Palus, planitia.","findings":[{"id":"names-finding","name":"Names","description":"Planetary names.","questions":[{"text":"Is a planetary plain meant?","kind":"boundary"},{"text":"Which IAU name applies?","kind":"provenance"}]}]},{"id":"formation","name":"Formation","description":"Lava and impacts.","findings":[{"id":"formation-finding","name":"Formation","description":"Planetary formation.","questions":[{"text":"How did the planetary plain form?","kind":"provenance"},{"text":"From which mission data?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe a plain's landforms, soils and land use from surveys and maps.","Report flood risk on floodplains from official flood maps."],"mustNot":["Describe a floodplain as safe for building when official maps show flood risk.","Present one formation process as certain where geologists disagree.","Encourage drainage or clearance of protected wetland or grassland on a plain.","Treat a plain as empty land, ignoring the people and species that live there."],"requiresHuman":["Land use or development decisions on floodplains."]},"ethics":{"considerations":["Plains feed many people and hold grasslands and wetlands that are easily lost.","Building on floodplains moves risk onto residents and downstream communities."],"affectedParties":["People living and farming on the plain","Grassland and wetland species","Downstream communities"]},"owners":{"steward":"Nobody owns a landform; land parcels on it have their own owners and the public holds it in common.","roles":[],"masterSystems":["Geological surveys","Flood risk maps","Land registries"]},"relations":[{"target":"Q107425","type":"parent","note":"registry parent class"},{"target":"Q271669","type":"parent","note":"registry parent class"},{"target":"landform and landscape","type":"related","note":"category"},{"target":"deposition","type":"related","note":"process"},{"target":"hill and mountain","type":"related","note":"relief"},{"target":"agriculture","type":"related","note":"land use"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.plain","Wikidata: Q160091 (https://www.wikidata.org/wiki/Q160091)"]},"properties":{"applicability":"required","items":["Surface area:  km2 - Measure the mapped extent using a stated boundary and geographic coordinate system.","Surface slope:  degrees - Measure terrain inclination using surveyed elevations or an elevation model at a stated spatial resolution.","Local relief:  m - Calculate the difference between highest and lowest elevations within a stated assessment area."]},"recognition":{"applicability":"required","items":["Low relief over large areas","Types such as floodplain or coastal plain","Planetary terms such as palus","Wide, flat or gently rolling land, often farmed or grassy."]},"capabilities":{"applicability":"required","items":["map and classify plains","assess flood risk on floodplains","manage farmland","study planetary plains"]},"hazards":{"applicability":"required","items":["Flooding on floodplains","Soil erosion from wind","Building in flood zones"]},"interfaces":{"applicability":"required","items":["Flood risk planning rules","IAU planetary nomenclature"]},"context":{"applicability":"required","items":["Agriculture, settlement, transport and grazing.","floodplains and alluvial plains","coastal plains","glacial outwash plains","lava plains","planetary plains"]}},"sources":[{"title":"Wikidata item Q160091: plain","url":"https://www.wikidata.org/wiki/Q160091","note":"identity and sense of the item"},{"title":"Wikipedia: Plain","url":"https://en.wikipedia.org/wiki/Plain","note":"general description of the item"}],"openQuestions":["Should plain types be separate entries?","How should planetary plains be linked?","How should flood zones be linked?"],"resources":{"spec":"/models/things/publications/thing-q160091/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q160091/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T07:58:53Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:26+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}