Indian Ocean subtropical gyre
E47578
The Indian Ocean subtropical gyre is a large, clockwise-rotating system of ocean currents in the southern Indian Ocean that plays a key role in heat transport, climate regulation, and marine ecosystems.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Indian Ocean subtropical gyre canonical | 2 |
| Southwest Indian Ocean gyre | 1 |
| Southwest Indian Ocean subtropical gyre | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T371910 — 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: Indian Ocean subtropical gyre Context triple: [Indian Ocean, hasMajorGyre, Indian Ocean subtropical gyre]
-
A.
South Atlantic subtropical gyre
The South Atlantic subtropical gyre is a large, clockwise-rotating system of ocean currents in the South Atlantic Ocean that plays a key role in global heat transport and climate regulation.
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B.
South Pacific Gyre
The South Pacific Gyre is a vast, slow-moving system of ocean currents in the southern Pacific known for its extremely low biological productivity and accumulation of floating debris.
-
C.
North Pacific Gyre
The North Pacific Gyre is a large system of rotating ocean currents in the northern Pacific, known for its role in global circulation and for concentrating floating marine debris such as the Great Pacific Garbage Patch.
-
D.
Philippine Sea gyre
The Philippine Sea gyre is a large, circular system of ocean currents and associated water circulation located in the Philippine Sea in the western North Pacific.
-
E.
Sargasso Sea
The Sargasso Sea is a region of the North Atlantic Ocean characterized by its clear, warm waters and large floating mats of Sargassum seaweed, bounded by ocean currents rather than land.
- 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: Indian Ocean subtropical gyre Target entity description: The Indian Ocean subtropical gyre is a large, clockwise-rotating system of ocean currents in the southern Indian Ocean that plays a key role in heat transport, climate regulation, and marine ecosystems.
-
A.
South Atlantic subtropical gyre
The South Atlantic subtropical gyre is a large, clockwise-rotating system of ocean currents in the South Atlantic Ocean that plays a key role in global heat transport and climate regulation.
-
B.
South Pacific Gyre
The South Pacific Gyre is a vast, slow-moving system of ocean currents in the southern Pacific known for its extremely low biological productivity and accumulation of floating debris.
-
C.
North Pacific Gyre
The North Pacific Gyre is a large system of rotating ocean currents in the northern Pacific, known for its role in global circulation and for concentrating floating marine debris such as the Great Pacific Garbage Patch.
-
D.
Philippine Sea gyre
The Philippine Sea gyre is a large, circular system of ocean currents and associated water circulation located in the Philippine Sea in the western North Pacific.
-
E.
Sargasso Sea
The Sargasso Sea is a region of the North Atlantic Ocean characterized by its clear, warm waters and large floating mats of Sargassum seaweed, bounded by ocean currents rather than land.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
oceanic gyre
ⓘ
physical oceanographic feature ⓘ subtropical gyre ⓘ |
| affects |
Indian Ocean heat content
ⓘ
monsoon-related sea surface temperature patterns ⓘ |
| associatedWith |
Ekman transport
ⓘ
downwelling in subtropical convergence zones ⓘ subtropical high-pressure systems ⓘ |
| basin | Indian Ocean ⓘ |
| boundedBy |
Agulhas Current
ⓘ
Antarctic Circumpolar Current ⓘ South Equatorial Current ⓘ West Australian Current ⓘ |
| drivenBy |
Coriolis effect
ⓘ
trade winds ⓘ westerlies ⓘ |
| easternBoundaryCurrent | West Australian Current ⓘ |
| feature |
central oligotrophic region
ⓘ
cool eastern boundary current ⓘ warm western boundary current ⓘ |
| hemisphere | Southern Hemisphere ⓘ |
| influences |
Southern Hemisphere climate
ⓘ
marine ecosystems in the southern Indian Ocean ⓘ sea surface temperature patterns in the Indian Ocean ⓘ |
| latitudeBand | subtropical ⓘ |
| northernBoundaryCurrent | South Equatorial Current ⓘ |
| partOf |
global ocean circulation
ⓘ
wind-driven circulation ⓘ |
| primaryFunction |
carbon uptake
ⓘ
climate regulation ⓘ heat transport ⓘ nutrient transport ⓘ |
| relatedTo |
North Atlantic subtropical gyre
ⓘ
North Pacific subtropical gyre ⓘ
linked to:
North Pacific Gyre
South Atlantic subtropical gyre ⓘ South Pacific subtropical gyre ⓘ |
| roleInBiogeochemistry |
contributes to ocean carbon sink in subtropical regions
ⓘ
controls distribution of nutrients in the southern Indian Ocean ⓘ influences biological productivity patterns ⓘ |
| rotationDirection | clockwise ⓘ |
| southernBoundaryCurrent | Antarctic Circumpolar Current ⓘ |
| studiedIn |
climate science
ⓘ
marine biogeochemistry ⓘ physical oceanography ⓘ |
| timescale | multi-year to decadal variability ⓘ |
| westernBoundaryCurrent | Agulhas Current ⓘ |
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: Indian Ocean subtropical gyre Description of subject: The Indian Ocean subtropical gyre is a large, clockwise-rotating system of ocean currents in the southern Indian Ocean that plays a key role in heat transport, climate regulation, and marine ecosystems.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Indian Ocean subtropical gyre
linked to: Indian Ocean subtropical gyre