Izu–Tobu volcanic group
E888643
The Izu–Tobu volcanic group is a cluster of active and dormant volcanoes on Japan’s Izu Peninsula, known for frequent seismic activity, geothermal features, and complex tectonic interactions along the Pacific margin.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Izu–Tobu volcanic group canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10838697 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Izu–Tobu volcanic group Context triple: [Fuji Volcanic Zone, contains, Izu–Tobu volcanic group]
-
A.
Tokachi Volcanic Group
Tokachi Volcanic Group is an active volcanic mountain cluster in central Hokkaido, Japan, known for its frequent eruptions, geothermal activity, and alpine landscapes.
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B.
Shikaribetsu Volcanic Group
Shikaribetsu Volcanic Group is a cluster of volcanic mountains in central Hokkaido, Japan, known for its rugged terrain and proximity to Lake Shikaribetsu within Daisetsuzan National Park.
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C.
Daisetsuzan Volcanic Group
The Daisetsuzan Volcanic Group is a large cluster of active and dormant volcanic peaks in central Hokkaido, Japan, known for its rugged alpine landscapes and extensive hiking opportunities.
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D.
Norikura Volcanic Zone
The Norikura Volcanic Zone is a major segment of Japan’s volcanic arc system in central Honshu, characterized by numerous stratovolcanoes and geothermal activity.
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E.
Mount Iwaki volcanic field
Mount Iwaki volcanic field is a volcanic area in northern Honshu, Japan, centered on the prominent stratovolcano Mount Iwaki and associated vents within the Northeastern Japan Arc.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Izu–Tobu volcanic group Target entity description: The Izu–Tobu volcanic group is a cluster of active and dormant volcanoes on Japan’s Izu Peninsula, known for frequent seismic activity, geothermal features, and complex tectonic interactions along the Pacific margin.
-
A.
Tokachi Volcanic Group
Tokachi Volcanic Group is an active volcanic mountain cluster in central Hokkaido, Japan, known for its frequent eruptions, geothermal activity, and alpine landscapes.
-
B.
Shikaribetsu Volcanic Group
Shikaribetsu Volcanic Group is a cluster of volcanic mountains in central Hokkaido, Japan, known for its rugged terrain and proximity to Lake Shikaribetsu within Daisetsuzan National Park.
-
C.
Daisetsuzan Volcanic Group
The Daisetsuzan Volcanic Group is a large cluster of active and dormant volcanic peaks in central Hokkaido, Japan, known for its rugged alpine landscapes and extensive hiking opportunities.
-
D.
Norikura Volcanic Zone
The Norikura Volcanic Zone is a major segment of Japan’s volcanic arc system in central Honshu, characterized by numerous stratovolcanoes and geothermal activity.
-
E.
Mount Iwaki volcanic field
Mount Iwaki volcanic field is a volcanic area in northern Honshu, Japan, centered on the prominent stratovolcano Mount Iwaki and associated vents within the Northeastern Japan Arc.
- F. None of above. chosen
Statements (54)
| Predicate | Object |
|---|---|
| instanceOf |
volcanic field
ⓘ
volcanic group ⓘ |
| activityStatus | active ⓘ |
| associatedPlate |
Eurasian Plate
NERFINISHED
ⓘ
Pacific Plate NERFINISHED ⓘ Philippine Sea Plate NERFINISHED ⓘ |
| contains |
Hachimanyama cones
NERFINISHED
ⓘ
Higashi-Izu monogenetic cones NERFINISHED ⓘ Irazu-yama area NERFINISHED ⓘ Kawagodaira lava dome NERFINISHED ⓘ Omuroyama NERFINISHED ⓘ Usami geothermal area NERFINISHED ⓘ |
| country | Japan ⓘ |
| eruptionStyle |
Strombolian eruptions
ⓘ
effusive eruptions ⓘ phreatomagmatic eruptions ⓘ |
| hasDormantVolcanoes | true ⓘ |
| hasFeature |
active faults
ⓘ
cinder cones ⓘ fumaroles ⓘ geothermal fields ⓘ ground deformation ⓘ hot springs ⓘ hydrothermal alteration zones ⓘ lava domes ⓘ maars ⓘ pyroclastic cones ⓘ seismic swarms ⓘ tuff rings ⓘ |
| hazardType |
earthquakes
ⓘ
land deformation ⓘ landslides ⓘ volcanic eruptions ⓘ |
| knownFor |
complex tectonic interactions along the Pacific margin
ⓘ
frequent seismic activity ⓘ geothermal features ⓘ |
| locatedIn |
Izu Peninsula
NERFINISHED
ⓘ
Shizuoka Prefecture NERFINISHED ⓘ |
| locatedOn |
Honshu
ⓘ
Pacific coast of Japan ⓘ |
| monitoredBy |
Geological Survey of Japan
NERFINISHED
ⓘ
Japan Meteorological Agency NERFINISHED ⓘ |
| near |
Atami City
NERFINISHED
ⓘ
Ito City NERFINISHED ⓘ Kawana area ⓘ |
| partOf |
Izu Peninsula tectonic region
NERFINISHED
ⓘ
Izu–Bonin–Mariana arc NERFINISHED ⓘ |
| rockType |
andesite
ⓘ
basalt ⓘ dacite ⓘ |
| tectonicSetting |
convergent plate boundary
ⓘ
subduction zone ⓘ |
| volcanoType |
monogenetic volcanic field
ⓘ
subduction-related volcanoes ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Izu–Tobu volcanic group Description of subject: The Izu–Tobu volcanic group is a cluster of active and dormant volcanoes on Japan’s Izu Peninsula, known for frequent seismic activity, geothermal features, and complex tectonic interactions along the Pacific margin.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.