Hokkaido region (southern part)

E424927

geographical region tectonically active region

The southern part of Japan’s Hokkaido region is a geologically active area characterized by volcanic ranges, frequent earthquakes, and complex tectonic structures associated with the Northeastern Japan Arc.

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All labels observed (3)

Label	Occurrences
Hokkaido region (southern part) canonical	1
Southern Hokkaido	1
北海道南部	1

How this entity was disambiguated

This entity first appeared as the object of triple T4244720 — 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: Hokkaido region (southern part)
Context triple: [Northeastern Japan Arc, extendsFrom, Hokkaido region (southern part)]

A. Hokuriku region
The Hokuriku region is a coastal area in northwestern Honshu, Japan, known for its heavy snowfall, Sea of Japan shoreline, and historic castle and hot spring towns.
B. Geita Region
Geita Region is an administrative region in northwestern Tanzania, known for its significant gold mining activities and proximity to Lake Victoria.
C. Tajima region
The Tajima region is a northern area of Hyōgo Prefecture in Japan, known for its rural landscapes, hot springs, and the origin of the famed Tajima-gyu cattle used for Kobe beef.
D. Kōshinetsu region
The Kōshinetsu region is an inland area of central Honshu in Japan, typically referring to the combined prefectures of Nagano, Niigata, and Yamanashi.
E. Kyushu
Kyushu is the southwesternmost of Japan’s main islands, known for its active volcanoes, hot springs, and historic cities such as Fukuoka and Nagasaki.
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: Hokkaido region (southern part)
Target entity description: The southern part of Japan’s Hokkaido region is a geologically active area characterized by volcanic ranges, frequent earthquakes, and complex tectonic structures associated with the Northeastern Japan Arc.

A. Hokuriku region
The Hokuriku region is a coastal area in northwestern Honshu, Japan, known for its heavy snowfall, Sea of Japan shoreline, and historic castle and hot spring towns.
B. Geita Region
Geita Region is an administrative region in northwestern Tanzania, known for its significant gold mining activities and proximity to Lake Victoria.
C. Tajima region
The Tajima region is a northern area of Hyōgo Prefecture in Japan, known for its rural landscapes, hot springs, and the origin of the famed Tajima-gyu cattle used for Kobe beef.
D. Kōshinetsu region
The Kōshinetsu region is an inland area of central Honshu in Japan, typically referring to the combined prefectures of Nagano, Niigata, and Yamanashi.
E. Kyushu
Kyushu is the southwesternmost of Japan’s main islands, known for its active volcanoes, hot springs, and historic cities such as Fukuoka and Nagasaki.
F. None of above. chosen

Statements (66)

Predicate	Object
instanceOf	geographical region ⓘ tectonically active region ⓘ
containsBay	Uchiura Bay (Funka Bay) ⓘ linked to: Uchiura Bay
containsCaldera	Shikotsu Caldera ⓘ linked to: Shikotsu caldera Toya Caldera ⓘ linked to: Toya caldera
containsCity	Date ⓘ Hakodate ⓘ Kutchan ⓘ Muroran ⓘ Noboribetsu ⓘ Otaru ⓘ Sapporo ⓘ Tomakomai ⓘ linked to: Tomakomai, Hokkaido
containsPeninsula	Oshima Peninsula ⓘ
containsVolcanicRange	Komagatake volcano area ⓘ Niseko volcanic group ⓘ linked to: Niseko Volcanic Group Oshima Peninsula volcanic zone ⓘ linked to: Noboribetsu volcanic area Shikotsu–Tarumae volcanic complex ⓘ linked to: Nansei-Shikotsu volcanic group Tokachi–Daisetsu volcanic front (southern sector) ⓘ linked to: Tokachi Volcanic Group Usu–Showa-Shinzan volcanic area ⓘ
containsVolcano	Mount Komagatake (Oshima-Komagatake) ⓘ Mount Tarumae ⓘ Mount Usu ⓘ Mount Yotei (southern-central transition) ⓘ Niseko Annupuri ⓘ linked to: Niseko Annupuri International Ski Area Showa-Shinzan lava dome ⓘ linked to: Showa-shinzan lava dome
country	Japan ⓘ
geologicalAgeDominant	Quaternary ⓘ
hasEconomicActivity	agriculture on volcanic soils ⓘ tourism related to hot springs and volcanoes ⓘ
hasGeologicalCharacteristic	Quaternary volcanic ranges ⓘ active faults ⓘ active volcanism ⓘ complex tectonic structures ⓘ crustal deformation ⓘ frequent earthquakes ⓘ
hasLandform	caldera lakes ⓘ coastal plains adjacent to volcanic ranges ⓘ volcanic plateaus ⓘ
locatedIn	Hokkaido ⓘ Northern Japan ⓘ
monitoredBy	Hokkaido University (earth science institutes) ⓘ linked to: Department of Earth and Planetary Sciences, Hokkaido University Japan Meteorological Agency ⓘ
nearTectonicBoundary	Ishikari-Teichi-Toen fault zone ⓘ Japan Trench ⓘ Kuril Trench ⓘ
overlies	Cenozoic sedimentary basins ⓘ
partOf	Hokkaido region ⓘ linked to: Hokkaido Northeastern Japan Arc ⓘ
researchField	seismology ⓘ tectonics ⓘ volcanology ⓘ
seismicActivity	frequent shallow crustal earthquakes ⓘ interplate earthquakes along subduction interface ⓘ
seismicHazard	strong ground shaking potential ⓘ tsunami potential from offshore earthquakes ⓘ
subductionBeneath	North American Plate (Okhotsk microplate interpretation) ⓘ linked to: North American Plate Okhotsk Plate ⓘ
subductionOf	Pacific Plate ⓘ
tectonicSetting	island arc ⓘ subduction zone margin ⓘ
volcanicArc	Kuril Arc (transition zone) ⓘ Northeastern Japan Arc ⓘ
volcanicHazard	ash fall ⓘ lahars ⓘ pyroclastic flows ⓘ

How these facts were elicited

Referenced by (3)

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

Northeastern Japan Arc → extendsFrom → Hokkaido region (southern part) ⓘ

Hakodate Main Line → regionServed → Southern Hokkaido ⓘ

linked to: Hokkaido region (southern part)

道央自動車道 → regionServed → 北海道南部 ⓘ