Doomsday Glacier
E649210
Doomsday Glacier is the ominous nickname for Antarctica’s Thwaites Glacier, a massive and rapidly melting ice sheet whose potential collapse could significantly raise global sea levels.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Doomsday Glacier canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7195696 — 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: Doomsday Glacier Context triple: [Thwaites Glacier, hasNickname, Doomsday Glacier]
-
A.
Overlord Glacier
Overlord Glacier is a prominent mountain glacier in British Columbia, Canada, known for its dramatic icefields and proximity to the Whistler-Blackcomb ski area.
-
B.
Hellroaring Glacier
Hellroaring Glacier is a prominent alpine glacier on the slopes of Mount Adams in Washington State, known for its rugged crevasses and contribution to the mountain’s glacial landscape.
-
C.
North Guardian Glacier
North Guardian Glacier is a mountain glacier on the slopes of Glacier Peak in Washington’s North Cascades, contributing to the volcano’s glacial system and regional hydrology.
-
D.
Scimitar Glacier
Scimitar Glacier is a prominent mountain glacier on the slopes of Glacier Peak in Washington’s North Cascades.
-
E.
Dragoman Glacier
Dragoman Glacier is a glacier located on Smith Island in the South Shetland Islands of Antarctica, known for draining the island’s interior ice cap toward the surrounding coastal waters.
- 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: Doomsday Glacier Target entity description: Doomsday Glacier is the ominous nickname for Antarctica’s Thwaites Glacier, a massive and rapidly melting ice sheet whose potential collapse could significantly raise global sea levels.
-
A.
Overlord Glacier
Overlord Glacier is a prominent mountain glacier in British Columbia, Canada, known for its dramatic icefields and proximity to the Whistler-Blackcomb ski area.
-
B.
Hellroaring Glacier
Hellroaring Glacier is a prominent alpine glacier on the slopes of Mount Adams in Washington State, known for its rugged crevasses and contribution to the mountain’s glacial landscape.
-
C.
North Guardian Glacier
North Guardian Glacier is a mountain glacier on the slopes of Glacier Peak in Washington’s North Cascades, contributing to the volcano’s glacial system and regional hydrology.
-
D.
Scimitar Glacier
Scimitar Glacier is a prominent mountain glacier on the slopes of Glacier Peak in Washington’s North Cascades.
-
E.
Dragoman Glacier
Dragoman Glacier is a glacier located on Smith Island in the South Shetland Islands of Antarctica, known for draining the island’s interior ice cap toward the surrounding coastal waters.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
glacier
ⓘ
nickname ⓘ scientific research program ⓘ |
| bedTopography | retrograde slope ⓘ |
| buttresses | parts of West Antarctic Ice Sheet ⓘ |
| climateChangeIndicator | yes ⓘ |
| collapseCouldDestabilize | West Antarctic Ice Sheet ⓘ |
| contributionToGlobalSeaLevelRise | significant ⓘ |
| country | Antarctica ⓘ |
| emptiesInto | Amundsen Sea ⓘ |
| focusesOn | Thwaites Glacier ⓘ |
| groundingLine | retreating ⓘ |
| hasApproximateArea |
~192000 square kilometers
ⓘ
~74000 square miles ⓘ |
| hasApproximateLength | ~400 kilometers ⓘ |
| hasApproximateWidth |
120 kilometers
ⓘ
75 miles ⓘ |
| hasIceShelf | Thwaites Eastern Ice Shelf ⓘ |
| hasNickname | Doomsday Glacier ⓘ |
| iceFlowSpeed | increasing ⓘ |
| iceShelfStatus |
fracturing
ⓘ
thinning ⓘ |
| isLosingMass | yes ⓘ |
| isOneOf |
fastest-changing glaciers in Antarctica
ⓘ
largest glaciers in Antarctica ⓘ |
| locatedIn | West Antarctica ⓘ |
| locatedOn | Antarctic Ice Sheet ⓘ |
| massLossDriver |
atmospheric warming
ⓘ
ocean warming ⓘ |
| massLossProcess |
basal melting
ⓘ
calving of icebergs ⓘ |
| monitoredBy |
airborne surveys
ⓘ
oceanographic measurements ⓘ satellite observations ⓘ seismology ⓘ |
| namedAfter | Fredrik Thwaites ⓘ |
| partOf |
Amundsen Sea Embayment
ⓘ
linked to:
Amundsen Sea
|
| potentialLongTermSeaLevelContribution |
over 10 feet including linked basins
ⓘ
over 3 meters including linked basins ⓘ |
| refersTo | Thwaites Glacier ⓘ |
| relevanceTo |
climate policy and adaptation planning
ⓘ
global coastal communities ⓘ |
| riskCategory | high-impact ice-sheet instability ⓘ |
| seaLevelRiskTimeScale | centuries ⓘ |
| stability | potentially unstable ⓘ |
| studiedBy | International Thwaites Glacier Collaboration ⓘ |
| threatensToRaiseSeaLevelBy |
over 0.5 meters if it collapses completely
ⓘ
over 2 feet if it collapses completely ⓘ |
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: Doomsday Glacier Description of subject: Doomsday Glacier is the ominous nickname for Antarctica’s Thwaites Glacier, a massive and rapidly melting ice sheet whose potential collapse could significantly raise global sea levels.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Doomsday Glacier