lava
Enable an AI agent to recognise lava, assess its physical state and behaviour, and determine which observations, access decisions or interventions are justified by available evidence.
Bundle → Layer → Finding → Questions Filled
6 bundles · 11 layers · 12 findings · 24 questions
Lava identity and continuity Establishes what counts as the lava under assessment and how its identity persists through branching, crust formation and cooling.
Surface melt identification
Tests whether the candidate material belongs to this lava model.
Lava identification basis
Record the evidence for geological melt provenance and surface emplacement, including unresolved alternatives.
- What observation or sample establishes that this material is surface-emplaced geological melt or its directly tracked cooling product? definition
- Which vent, fissure or earlier lava body supplied it, and how was that connection established? provenance
Body boundaries and lineage
Defines the tracked unit within connected, branching or overlapping lava.
Tracked lava unit
Record whether the model instance represents a parcel, lobe, flow, lake or other bounded body and how it relates to adjacent units.
- Which observable or operational boundary separates this body from its supply, neighbouring lobes and older lava? boundary
- When this body branches, merges or solidifies, which identity and parent-child links should be retained? boundary
Thermal and material condition Captures the temperature and material properties that govern the body's capacity to flow and change state.
Thermal and phase state
Separates measured surface conditions from inferred interior conditions.
Temperature and phase evidence
Record where temperatures and melt, crystal or gas fractions were measured or inferred.
- What temperatures are supported for exposed melt, crust and interior, at what times and with what uncertainties? measurement
- What evidence constrains the proportions of melt, crystals and gas in the material being assessed? measurement
Composition and deformation
Relates sampled composition and material structure to observed or estimated flow resistance.
Rheological assessment
Record a conditional description of deformation behaviour with its compositional and observational basis.
- How representative is the analysed sample of the moving interior rather than only the cooled surface? provenance
- What viscosity or yield behaviour is supported, and under which temperature, crystal-content and deformation conditions? measurement
Supply and emplacement Tracks lava input, transport, accumulation and changes in occupied ground.
Feeding and routing
Identifies how lava enters and moves through the tracked body.
Supply path and rate
Record active or suspected feeding connections, transport paths and changes in input.
- Is this body being replenished through an exposed channel, a concealed passage or another connection, and what supports that assessment? provenance
- What input or discharge rate is supported over the relevant interval, and how much of the transport remains unobserved? measurement
Advance and accumulation
Distinguishes lateral movement from thickening, inflation, ponding and drainage.
Emplacement change
Record changes in footprint, elevation and internal motion as separate observations.
- How have the front position, thickness and surface elevation changed between comparable observations? measurement
- Which terrain features, levees or obstructions currently constrain routing, and where is their continuity uncertain? boundary
- Which changes in supply or containment would require reassessing the expected area of emplacement? action
Crust and solidification Tracks the development of a solid exterior and the changing condition beneath it.
Surface-interior coupling
Assesses what the crust reveals and conceals about the underlying body.
Crust integrity and concealed state
Record crust continuity, openings and deformation together with evidence for underlying melt or cavities.
- Where is the crust intact, fractured, overturning or opening, and how recently was each condition observed? measurement
- What evidence distinguishes solid support from underlying melt, a drained passage or an unresolved interior? measurement
Cooling and model handoff
Defines how cooling is assessed and when a solidified product becomes the primary modelling subject.
Solidification assessment
Record the evidence for progress toward solidification without equating loss of visible glow or motion with completion.
- What observations constrain remaining interior heat and melt rather than only surface cooling? measurement
- Which evidence-based criterion permits a handoff to a volcanic-rock or deposit model while preserving lava provenance? boundary
Contact effects and action Connects lava condition and environmental contact to specific observation and intervention decisions.
Environmental contact
Records interfaces where lava transfers heat, loads surfaces or interacts with water and other materials.
Contact process assessment
Identify observed and possible contact effects while separating lava-body observations from wider hazard predictions.
- Where does lava contact liquid water, ice, wet sediment, combustible material or built assets? boundary
- Which thermal, mechanical, gas-release or fragmentation effects are observed at those contacts, and which remain inferred? measurement
Decision evidence
Determines whether current knowledge supports a particular action involving the lava.
Action-specific evidence sufficiency
Tie each proposed action to current lava conditions, unresolved observations and applicable external operating requirements.
- For the proposed approach, crossing, sampling or intervention, which lava conditions must be established and which remain unknown? action
- Which remote observation or specialist measurement would most directly resolve the uncertainty controlling that decision? action
- What change in lava supply, crust condition or contact behaviour would invalidate the current action assessment? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Kinds and varieties
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Which of these kinds and varieties hold for the sense of lava this model covers, and on what evidence? provenance
Identifiers and schemes
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Which of these identifiers and schemes hold for the sense of lava this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- primary magma, Niedermendig Lava, Tossol, Pele's tears, Lava delta, Limu o Pele
What it is Filled
Molten rock, usually silicate but also including carbonatite compositions, that has erupted onto Earth's surface (or an analogous planetary surface); distinguished from magma by having reached the surface, with cooled extrusive bodies also called lava in extended usage.
In scope
- Identification and boundaries of a lava body, parcel, lobe, channel or lake
- Temperature, composition, gas content, crystallinity and resulting flow behaviour
- Supply, emplacement, movement, inflation and drainage
- Crust formation, cooling and degree of solidification
- Contact effects and evidence needed to constrain observation or intervention
Out of scope
- Subsurface magma reservoirs, ascent conduits and eruption initiation
- The volcano or volcanic plumbing system as a whole
- Detached airborne volcanic fragments and pyroclastic density currents
- Atmospheric transport of volcanic gases and aerosols
- Regional bedrock history and long-term weathering of solidified lava
- Emergency command, evacuation logistics and infrastructure asset management
Why it exists Filled
Enable an AI agent to recognise lava, assess its physical state and behaviour, and determine which observations, access decisions or interventions are justified by available evidence.
Distinguishing features Filled
- Establish that the material reached the surface: a melt still confined below ground is magma rather than lava within this scope.
- Establish geological melt provenance: heat, redness or fluidity alone cannot distinguish lava from industrial slag or another molten material.
- Distinguish a coherent surface melt body from detached eruptive fragments or a particle-dominated current; record transitions and ambiguous mixed cases.
- Distinguish ongoing emplacement from a stationary lava deposit using repeat observations of boundaries, supply or deformation rather than appearance alone.
- Distinguish surface crust from complete solidification: a solid-looking exterior does not establish the state of the interior.
What robots and AI may and may not do Filled
Must not
- Guide people toward active lava flows or into closed hazard zones.
- Encourage walking on recently cooled flows whose crust may hide molten rock.
- Contradict or downplay official evacuation orders.
- Fly drones over eruptions where authorities forbid it.
Only with a human decision
- Any decision about evacuation or re-entry to an affected area.
May
- Report lava flow positions and alerts from volcano observatories and civil protection sources.
- Describe lava types and how they cool, from geological sources.
Moral aspects Filled
- Lava destroys homes, farmland and sacred places, displacing whole communities.
- Eruption tourism puts visitors and rescuers at risk.
Who is affected
- Residents near volcanoes
- Visitors and tourists
- Emergency responders
Owners Filled
Steward
Nobody: a natural material; civil protection authorities manage hazard zones.
Master systems
- Volcano observatory monitoring records
Links to other meta-models Filled
parent
- Q42278 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.lava
- Wikidata: Q40157 (https://www.wikidata.org/wiki/Q40157)
Direct properties required Filled
- Source and emplacement context: Linked vent or fissure, eruption episode, parent lava body and receiving surface; unknown permitted
- Composition: Major-element mass percentages with analytical method, sample location and time
- Temperature distribution: Degrees Celsius or kelvin, explicitly distinguishing exposed melt, crust and inferred interior
- Physical phase proportions: Melt, crystal and gas volume fractions with measurement or inference basis
- Effective rheology: Effective viscosity in Pa·s and, where applicable, yield stress in Pa; include temperature and deformation conditions
- Body geometry: Mapped footprint, thickness in m and volume in m³, with timestamp and uncertainty
- Supply and discharge: Volumetric rate in m³/s or mass rate in kg/s, with location, interval and measurement basis
- Motion: Front advance, internal surface velocity and vertical inflation or subsidence in m/s or m per observation interval
- Emplacement form: Channelised flow, sheet, lobe, pond or lake, dome, pillow-form body, mixed or unresolved
- Crust and interior condition: Exposed melt, partial crust, continuous crust with unresolved interior, confirmed molten interior, substantially solidified or unresolved
- Receiving environment: Contact with terrain, liquid water, ice, sediment, vegetation or built assets
- Observation support: Linked observations, samples and estimates with time, spatial coverage, method and uncertainty
Recognition required Filled
- Glowing red to orange molten rock when active, dark grey to black when cooled.
- Ropy smooth surfaces or rough clinkery rubble on cooled flows.
- Steam and fume rising where lava meets water or vegetation.
Capabilities and actions required Filled
- Identify and map a lava body while recording uncertain or concealed boundaries.
- Compare successive observations to detect advance, inflation, drainage, crust disruption or cooling.
- Estimate mobility and possible emplacement changes under explicit supply, terrain and material assumptions.
- Select remote observations or specialist sampling that resolve a specific uncertainty.
- Flag contact effects and affected locations for assessment by hazard and asset models.
- Evaluate whether evidence and external operating rules support a proposed approach, crossing, sampling or engineered intervention.
Hazards and failure modes required Filled
- Burns and destruction of buildings and roads in its path.
- Toxic gases released near vents and where lava enters the sea.
- Collapse of thin crust over still molten lava.
Standards and interfaces not applicable Not applicable
Not applicable
No universal standard or regulation applies to lava itself independently of the location and activity concerned.
Context of use required Filled
- Lava is encountered at erupting volcanic vents and in surface flows, lakes and newly forming volcanic terrain.
- Observations of lava support eruption monitoring, hazard assessment and research into volcanic processes.
- Its cooling and solidification help explain the formation of volcanic rocks and landforms.
Sources Filled
- Lava flows - Volcano Hazards Program - Definition as erupted molten rock, flow types, hazards, and typical temperatures.
- lava (Q39586) - Canonical identifier and aliases.
- Wikidata item Q40157: lava - identity and sense of the item
- Wikipedia: Lava - general description of the item
Open questions
- Does the registry intend lava to include fully solidified lava indefinitely, or should this model hand off to a rock or deposit entry after a defined transition?
- Should non-silicate lava and proposed cryolava share this entry, or do registry boundaries assign them to other material models?
- What identity rules should apply to lava lakes, connected tube-fed lobes and successive flows that merge or overlap?
- Which validated observation methods and uncertainty limits are appropriate for inferring interior melt, concealed transport and crust support in each emplacement setting?
- Which domain-specific sources and operating authorities should govern action criteria for terrestrial, submarine and extraterrestrial lava?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q40157/spec.json