Eurasian Plate at the Nankai Trough
E542011
The Eurasian Plate at the Nankai Trough is a major tectonic plate margin off southwestern Japan where intense subduction-driven seismic and volcanic activity occurs.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Eurasian Plate at the Nankai Trough canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5695557 — 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: Eurasian Plate at the Nankai Trough Context triple: [Shikoku Basin, subductingUnder, Eurasian Plate at the Nankai Trough]
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A.
Pacific Plate fracture zone system
The Pacific Plate fracture zone system is a network of major undersea tectonic fractures and transform faults that segment and shape the Pacific Plate across the ocean floor.
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B.
Ryukyu subduction zone
The Ryukyu subduction zone is a tectonic plate boundary south of Japan where an oceanic plate descends beneath the Okinawa Plate, generating frequent earthquakes, volcanism, and the Ryukyu island arc.
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C.
Pacific Plate boundary system
The Pacific Plate boundary system is the extensive network of tectonic plate margins encircling the Pacific Ocean, characterized by subduction zones, transform faults, and spreading centers that generate intense seismic and volcanic activity.
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D.
Pacific–North American plate boundary system
The Pacific–North American plate boundary system is a major tectonic boundary zone where the Pacific Plate and North American Plate interact through a complex network of faults and plate motions along western North America.
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E.
Sunda subduction system
The Sunda subduction system is a major convergent plate boundary in Southeast Asia where the Indo-Australian Plate is being subducted beneath the Eurasian/Sunda Plate, generating intense seismic and volcanic activity along Indonesia’s island arcs.
- 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: Eurasian Plate at the Nankai Trough Target entity description: The Eurasian Plate at the Nankai Trough is a major tectonic plate margin off southwestern Japan where intense subduction-driven seismic and volcanic activity occurs.
-
A.
Pacific Plate fracture zone system
The Pacific Plate fracture zone system is a network of major undersea tectonic fractures and transform faults that segment and shape the Pacific Plate across the ocean floor.
-
B.
Ryukyu subduction zone
The Ryukyu subduction zone is a tectonic plate boundary south of Japan where an oceanic plate descends beneath the Okinawa Plate, generating frequent earthquakes, volcanism, and the Ryukyu island arc.
-
C.
Pacific Plate boundary system
The Pacific Plate boundary system is the extensive network of tectonic plate margins encircling the Pacific Ocean, characterized by subduction zones, transform faults, and spreading centers that generate intense seismic and volcanic activity.
-
D.
Pacific–North American plate boundary system
The Pacific–North American plate boundary system is a major tectonic boundary zone where the Pacific Plate and North American Plate interact through a complex network of faults and plate motions along western North America.
-
E.
Sunda subduction system
The Sunda subduction system is a major convergent plate boundary in Southeast Asia where the Indo-Australian Plate is being subducted beneath the Eurasian/Sunda Plate, generating intense seismic and volcanic activity along Indonesia’s island arcs.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
plate margin
ⓘ
subduction zone ⓘ tectonic plate boundary ⓘ |
| adjacentTo | Philippine Sea Plate ⓘ |
| associatedWith |
Japanese island arc system
ⓘ
Nankai Trough ⓘ Nankai accretionary prism ⓘ Southwest Japan forearc ⓘ |
| causes |
large interplate earthquakes
ⓘ
tsunamis affecting southwestern Japan ⓘ |
| drivenBy | subduction of the Philippine Sea Plate beneath the Eurasian Plate ⓘ |
| formsBoundaryType | oceanic-continental convergent margin ⓘ |
| hasActivity |
intense seismic activity
ⓘ
megathrust earthquakes ⓘ tsunamigenic earthquakes ⓘ volcanic activity ⓘ |
| hasHazard |
great earthquake potential
ⓘ
strong ground shaking in southwest Japan ⓘ tsunami hazard ⓘ |
| hasProcess |
accretionary prism formation
ⓘ
megathrust faulting ⓘ seismic coupling ⓘ subduction ⓘ |
| locatedIn | southwestern Japan ⓘ |
| locatedOffCoastOf |
Honshu
ⓘ
Kyushu ⓘ Shikoku ⓘ |
| monitoredBy |
Japanese seismic networks
ⓘ
ocean-bottom seismometers ⓘ |
| near |
Kii Peninsula
ⓘ
Shikoku Basin ⓘ |
| overrides | Philippine Sea Plate ⓘ |
| partOf | Eurasian Plate ⓘ |
| relatedEvent |
1854 Ansei-Nankai earthquake
ⓘ
1854 Ansei-Tokai earthquake ⓘ 1944 Tonankai earthquake ⓘ 1946 Nankai earthquake ⓘ Nankai megathrust earthquakes ⓘ
linked to:
Nankai megathrust
|
| relevantTo |
Japanese disaster mitigation planning
ⓘ
plate tectonics research ⓘ subduction zone seismology ⓘ |
| studiedBy |
Integrated Ocean Drilling Program
ⓘ
International Ocean Discovery Program ⓘ Japan Agency for Marine-Earth Science and Technology ⓘ |
| subductsWithRespectTo | Philippine Sea Plate ⓘ |
| tectonicSetting | convergent plate boundary ⓘ |
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: Eurasian Plate at the Nankai Trough Description of subject: The Eurasian Plate at the Nankai Trough is a major tectonic plate margin off southwestern Japan where intense subduction-driven seismic and volcanic activity occurs.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.