Sumatra subduction zone

E41168

convergent plate boundary subduction zone

The Sumatra subduction zone is a major convergent plate boundary off the western coast of Sumatra where intense seismic and volcanic activity occurs, including some of the world’s largest recorded earthquakes and tsunamis.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

AI illustration

All labels observed (5)

Label	Occurrences
Sumatra subduction zone canonical	5
Andaman–Sumatra subduction zone	2
Sumatra segment	1
Sumatran subduction zone	1
outer arc of the Sunda subduction zone	1

How this entity was disambiguated

This entity first appeared as the object of triple T318646 — 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: Sumatra subduction zone
Context triple: [Indo-Australian Plate, associatedWith, Sumatra subduction zone]

A. Cascadia Subduction Zone
The Cascadia Subduction Zone is a major convergent plate boundary off the Pacific Northwest coast of North America, capable of generating powerful megathrust earthquakes and tsunamis.
B. Japan Trench
The Japan Trench is a deep oceanic trench off northeastern Japan where the Pacific Plate subducts beneath the Okhotsk Plate, forming part of the Pacific Ring of Fire and generating powerful earthquakes and tsunamis.
C. Philippine Sea Plate
The Philippine Sea Plate is an oceanic tectonic plate in the western Pacific whose complex subduction zones and boundaries contribute significantly to the intense seismic and volcanic activity of the region.
D. Peru–Chile Trench region
The Peru–Chile Trench region is a highly active subduction-zone area off the west coast of South America, known for its deep ocean trench, frequent earthquakes, and major role in Andean mountain building.
E. Mariana volcanic arc
The Mariana volcanic arc is a chain of active and dormant volcanoes in the western Pacific Ocean formed by the subduction of the Pacific Plate beneath the Philippine Sea Plate.
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: Sumatra subduction zone
Target entity description: The Sumatra subduction zone is a major convergent plate boundary off the western coast of Sumatra where intense seismic and volcanic activity occurs, including some of the world’s largest recorded earthquakes and tsunamis.

A. Cascadia Subduction Zone
The Cascadia Subduction Zone is a major convergent plate boundary off the Pacific Northwest coast of North America, capable of generating powerful megathrust earthquakes and tsunamis.
B. Japan Trench
The Japan Trench is a deep oceanic trench off northeastern Japan where the Pacific Plate subducts beneath the Okhotsk Plate, forming part of the Pacific Ring of Fire and generating powerful earthquakes and tsunamis.
C. Philippine Sea Plate
The Philippine Sea Plate is an oceanic tectonic plate in the western Pacific whose complex subduction zones and boundaries contribute significantly to the intense seismic and volcanic activity of the region.
D. Peru–Chile Trench region
The Peru–Chile Trench region is a highly active subduction-zone area off the west coast of South America, known for its deep ocean trench, frequent earthquakes, and major role in Andean mountain building.
E. Mariana volcanic arc
The Mariana volcanic arc is a chain of active and dormant volcanoes in the western Pacific Ocean formed by the subduction of the Pacific Plate beneath the Philippine Sea Plate.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	convergent plate boundary ⓘ subduction zone ⓘ
associatedWith	Barisan Mountains ⓘ Sumatran volcanic arc ⓘ linked to: Sunda Arc Sunda Trench ⓘ
boundedBy	Sunda Trench ⓘ
causes	deformation of overriding plate ⓘ strain accumulation along plate interface ⓘ uplift of Sumatra forearc ⓘ
characterizedBy	arc volcanism ⓘ intense seismic activity ⓘ megathrust faulting ⓘ oblique convergence ⓘ tsunamigenic earthquakes ⓘ
country	Indonesia ⓘ
earthquakeHazardLevel	very high ⓘ
extendsFrom	Andaman Islands region ⓘ linked to: Andaman Islands
extendsTo	south of Sumatra ⓘ
hasSeismicityType	deep-focus earthquakes ⓘ intermediate-depth earthquakes ⓘ interplate earthquakes ⓘ intraslab earthquakes ⓘ shallow-focus earthquakes ⓘ
knownFor	2004 Indian Ocean earthquake ⓘ 2004 Indian Ocean tsunami ⓘ 2005 Nias–Simeulue earthquake ⓘ 2010 Mentawai earthquake and tsunami ⓘ
locatedIn	Indian Ocean ⓘ
locatedOffCoastOf	Indonesia ⓘ Sumatra ⓘ
monitoredBy	Indonesian Agency for Meteorology Climatology and Geophysics ⓘ linked to: National Meteorological and Hydrological Services global seismic networks ⓘ
ocean	Indian Ocean ⓘ
overlies	Eurasian Plate ⓘ Sunda Plate ⓘ
overriddenBy	Eurasian Plate ⓘ Sunda Plate ⓘ
partOf	Sunda arc ⓘ linked to: Sunda Arc Sunda subduction zone ⓘ linked to: Sunda Trench
producedEarthquakeMagnitude	>9.0 ⓘ
producedEarthquakeType	megathrust earthquake ⓘ
riskTo	coastal communities of Sumatra ⓘ countries around the Indian Ocean basin ⓘ
subducts	Indian Plate ⓘ linked to: Indo-Australian Plate Indo-Australian Plate ⓘ
tectonicSetting	convergence of Indo-Australian Plate and Sunda Plate ⓘ oceanic-continental subduction ⓘ
tsunamiHazardLevel	very high ⓘ
volcanicHazardLevel	high ⓘ

How these facts were elicited

Referenced by (10)

Full triples — surface form annotated when it differs from this entity's canonical label.

Indo-Australian Plate → associatedWith → Sumatra subduction zone ⓘ

Indian Ocean Ridge system → terminatesNear → Sumatra subduction zone ⓘ

Sunda Plate → associatedWith → Sumatra subduction zone ⓘ

Sunda Arc → hasPart → Sumatra segment ⓘ