valley
Let an agent handle valleys by name, type, formation, hazards and use.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent handle valleys by name, type, formation, hazards and use.
A low area of land between hills or mountains, typically with a river or stream flowing through it, formed by river or glacial erosion; types include V-shaped, U-shaped, rift and dry valleys, and valleys on other planets.
What it is for: Settlement, transport routes, agriculture and water supply.
It can be map and name valleys; understand their formation; plan for flood and landslide hazards; hike and explore.
Distinguishing features
Elongated depression between higher ground
Often river-formed
Glacial valleys are U-shaped
Found on other planets as chasmata
What it looks like
Elongated lowland between slopes, often with a river.
Physical character
length: hundreds of metres to thousands of km - small valleys to great rift valleys
How it is recognised
V- or U-shaped cross-sections
Valley floors with rivers
Wind and water gaps are notches through ridges
Related models
is a kind of - category
is formed by - process
contains - feature
is contrasted with - relief
In practice
Families and kinds
V-shaped river valleys
U-shaped glacial valleys
rift valleys
dry valleys
hanging valleys
planetary chasmata and rilles
Identifiers
gazetteer id national feature ids named valleys
Standards and regulation
National mapping and naming authorities
Flood risk planning rules
Failure modes and hazards
Flash floods
Landslides and avalanches
Cold-air pooling and pollution
Also called
+16
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.valley
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Identity Which valley.
Names and location.
Name
Gazetteer.
Name
Name and location.
- Which valley, and where? provenance
- Which river flows through it? definition
Type
Shape and origin.
Type
Valley type.
- What type of valley is it? definition
- How did it form? provenance
Hazards Floods and slopes.
Valleys concentrate hazards.
Floods
Flood risk.
Floods
Flood risk.
- What is the flood risk on the valley floor? boundary
- Are warnings in force? provenance
Slopes
Landslides.
Slopes
Slope hazards.
- Are there landslide or avalanche risks? boundary
- Where is hazard mapping? provenance
Use People.
Valleys host people.
Settlement
Towns and farms.
Settlement
Settlement.
- How is the valley used for settlement and farming? definition
- How has that changed? provenance
Routes
Transport.
Routes
Transport routes.
- Which roads or railways use the valley? definition
- Are there passes or gaps? definition
Science Formation.
Geology explains valleys.
Formation
Processes.
Formation
Formation.
- Which processes shaped it, and over what time? provenance
- Which studies explain it? provenance
Planetary
Other worlds.
Planetary
Planetary valleys.
- Is a valley on another planet meant? boundary
- Which entry fits? action
What the second pass must settle
- Should valley types be separate entries?
- How should planetary features be linked?
- How should named valleys be instances?