{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.sediment-transport","code":"thing-q7445303","url":"https://ver.cy/models/thing/q7445303/","name":"sediment transport","alternateNames":["coastal sediment transport","sandfall","sediment gravity flow"],"kind":"thing","status":"published","version":"0.2.0-wave.4","language":"en","classifiers":{"family":"Thing Registry","category":"Activities and processes","entryKind":"thing","plane":"ACT","domain":["ACT.PRC"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The movement of solid particles by water, wind, ice or gravity, from river bedload and suspended load and coastal sediment transport along shores by waves and currents to sediment gravity flows such as turbidity currents and debris flows and underwater sandfalls where sand cascades down submarine slopes; sediment transport shapes rivers, coasts and seabeds and is central to engineering of harbours, dams and beaches.","purpose":"Let an agent explain sediment transport and its modes, relay physics, measurement and modelling from geomorphology and engineering sources, describe coastal transport and gravity flows, and distinguish sediment transport from erosion, deposition and sediment as material.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Fluid and gravity driven","Bedload and suspension","Coastal and submarine","Engineering relevance"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What sediment transport is.","layers":[{"id":"definition","name":"Definition","description":"Definition and modes.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is sediment transport, and how do bedload, suspension, coastal transport and gravity flows differ from erosion and deposition?","kind":"definition"},{"text":"Is the question about physics, a setting, engineering or a specific process?","kind":"boundary"}]}]},{"id":"physics","name":"Physics","description":"Physics.","findings":[{"id":"physics-finding","name":"Physics","description":"Physics.","questions":[{"text":"What governs the threshold of motion, settling and transport capacity?","kind":"definition"},{"text":"Which entry fits Shields parameter?","kind":"action"}]}]}]},{"id":"settings","name":"Settings","description":"Settings.","layers":[{"id":"rivers","name":"Rivers","description":"Rivers and wind.","findings":[{"id":"rivers-finding","name":"Rivers","description":"Rivers.","questions":[{"text":"How do rivers and wind move sediment, and how are rates measured?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"coasts","name":"Coasts","description":"Coasts and seabed.","findings":[{"id":"coasts-finding","name":"Coasts","description":"Coasts.","questions":[{"text":"How do waves and currents drive longshore transport, and how do turbidity currents and sandfalls move sediment offshore?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"engineering","name":"Engineering","description":"Engineering.","layers":[{"id":"management","name":"Management","description":"Management.","findings":[{"id":"management-finding","name":"Management","description":"Management.","questions":[{"text":"How are sediment budgets, beach nourishment and dredging used in coastal and river management?","kind":"provenance"},{"text":"Which entry fits coastal management?","kind":"action"}]}]},{"id":"modelling","name":"Modelling","description":"Modelling.","findings":[{"id":"modelling-finding","name":"Modelling","description":"Modelling.","questions":[{"text":"How is sediment transport modelled numerically?","kind":"provenance"},{"text":"Which entry fits hydrodynamic modelling?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"Records and history.","layers":[{"id":"records","name":"Records","description":"Geological record.","findings":[{"id":"records-finding","name":"Records","description":"Records.","questions":[{"text":"How do transport processes leave signatures in sedimentary rocks?","kind":"provenance"},{"text":"Which entry fits sedimentary structure?","kind":"action"}]}]},{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How did Bagnold, Shields and others found sediment transport science?","kind":"provenance"},{"text":"Which entry fits the history of geomorphology?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Model and report sediment transport for a river, coast or seabed from survey data.","Flag siltation, scour or erosion trends to the authority responsible."],"mustNot":["Present model results for a coast or harbour as certain where the data is thin.","Recommend works that shift erosion onto a neighbouring shore without saying so.","Approve dredging or beach nourishment without the required permits and assessments.","Ignore risks to seabed cables and pipelines from gravity flows in a route assessment."],"requiresHuman":["Approving coastal works, dredging or nourishment schemes.","Issuing erosion or landslide risk warnings to residents."]},"ethics":{"considerations":["Coastal erosion takes homes and land, and works that protect one shore often harm the next.","Debris flows and turbidity currents kill people and cut communications."],"affectedParties":["Coastal residents","Port and cable operators","Downstream communities"]},"owners":{"steward":"Nobody owns the process; coastal and river authorities answer for works and monitoring.","roles":[],"masterSystems":["Hydrographic survey records","Coastal monitoring programmes"]},"relations":[{"target":"Q10928429","type":"parent","note":"registry parent class"},{"target":"Q4284762","type":"parent","note":"registry parent class"},{"target":"geological process","type":"related","note":"in registry terms"},{"target":"material flow","type":"related","note":"in registry terms"},{"target":"sediment","type":"related","note":"from source to sink"},{"target":"erosion","type":"related","note":"which detaches material"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.sediment-transport","Wikidata: Q7445303 (https://www.wikidata.org/wiki/Q7445303)"]},"properties":{"applicability":"not-applicable","items":["Shields parameter: threshold of motion note","longshore transport rates: up to about 1 million cubic metres per year note - on energetic coasts","turbidity current speeds: up to about 20 m per second"]},"recognition":{"applicability":"optional","items":["Movement of sediment by fluids and gravity","Bedload, suspended load, coastal sediment transport, sediment gravity flow, sandfall","Erosion detaches; deposition settles; sediment is the material","Not a visible object; moving sand, silt and gravel."]},"capabilities":{"applicability":"required","items":["explain modes and physics","relay measurement and modelling","describe coastal and gravity flows","distinguish related processes"]},"hazards":{"applicability":"required","items":["Coastal erosion and harbour siltation","Turbidity current damage to cables","Confusing transport with erosion or deposition"]},"interfaces":{"applicability":"required","items":["Coastal and river engineering guidelines","Dredging and beach nourishment regulations"]},"context":{"applicability":"required","items":["Not applicable; a geological process.","fluvial bedload and suspended load transport","aeolian transport","glacial transport","coastal and longshore sediment transport","sediment gravity flows such as turbidity currents and debris flows","submarine sandfalls and canyons"]}},"sources":[{"title":"Wikidata item Q7445303: sediment transport","url":"https://www.wikidata.org/wiki/Q7445303","note":"identity and sense of the item"},{"title":"Wikipedia: Sediment transport","url":"https://en.wikipedia.org/wiki/Sediment_transport","note":"general description of the item"}],"openQuestions":["Should coastal sediment transport and turbidity current be separate primary entries?","How should geomorphology and engineering sources be linked?","The registry entry has merged aliases naming modes and a submarine feature; should they be split off?"],"resources":{"spec":"/models/things/publications/thing-q7445303/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q7445303/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T14:42:14Z","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":"not-applicable","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 2026-10-06T19:52:01+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane ACT: no invented physical properties."},"score":1.0}}