Marsili Seamount
E141173
Marsili Seamount is a large, active submarine volcano in the southern Tyrrhenian Sea and one of the most prominent volcanic structures in the Mediterranean.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Marsili Seamount canonical | 1 |
| Marsili seamount | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1128635 — 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: Marsili Seamount Context triple: [Tyrrhenian Sea, hasSeamount, Marsili Seamount]
-
A.
Suiko Seamount
Suiko Seamount is an underwater volcanic mountain in the northwestern Pacific Ocean that forms part of the long, age-progressive Hawaiian–Emperor seamount chain.
-
B.
Yuryaku Seamount
Yuryaku Seamount is an underwater volcanic mountain that forms part of the long, age-progressive Hawaiian–Emperor seamount chain in the North Pacific Ocean.
-
C.
Meiji Seamount
Meiji Seamount is a large, ancient underwater volcano located at the northern end of the Hawaiian–Emperor seamount chain in the North Pacific Ocean.
-
D.
Emperor Seamounts
The Emperor Seamounts are a long, mostly submerged volcanic mountain range in the northern Pacific Ocean that forms the older, more northerly segment of the Hawaiian–Emperor seamount chain.
-
E.
Detroit Seamount
Detroit Seamount is a large, ancient underwater volcano in the North Pacific Ocean that forms part of the long volcanic trail created as the Pacific Plate moved over the Hawaiian hotspot.
- 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: Marsili Seamount Target entity description: Marsili Seamount is a large, active submarine volcano in the southern Tyrrhenian Sea and one of the most prominent volcanic structures in the Mediterranean.
-
A.
Suiko Seamount
Suiko Seamount is an underwater volcanic mountain in the northwestern Pacific Ocean that forms part of the long, age-progressive Hawaiian–Emperor seamount chain.
-
B.
Yuryaku Seamount
Yuryaku Seamount is an underwater volcanic mountain that forms part of the long, age-progressive Hawaiian–Emperor seamount chain in the North Pacific Ocean.
-
C.
Meiji Seamount
Meiji Seamount is a large, ancient underwater volcano located at the northern end of the Hawaiian–Emperor seamount chain in the North Pacific Ocean.
-
D.
Emperor Seamounts
The Emperor Seamounts are a long, mostly submerged volcanic mountain range in the northern Pacific Ocean that forms the older, more northerly segment of the Hawaiian–Emperor seamount chain.
-
E.
Detroit Seamount
Detroit Seamount is a large, ancient underwater volcano in the North Pacific Ocean that forms part of the long volcanic trail created as the Pacific Plate moved over the Hawaiian hotspot.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
active volcano
ⓘ
seamount ⓘ submarine volcano ⓘ |
| country | Italy ⓘ |
| countryExclusiveEconomicZone | Italy ⓘ |
| discoverer | Luigi Ferdinando Marsili ⓘ |
| discoveryMethod | bathymetric survey ⓘ |
| elevationAboveSeafloor | about 3000 metres ⓘ |
| eruptionStatus | active ⓘ |
| geologicalAge | Quaternary ⓘ |
| geothermalActivity | hydrothermal circulation ⓘ |
| hasFeature |
elongated central ridge
ⓘ
flank fissures ⓘ hydrothermal fields ⓘ hydrothermal vents ⓘ lava flows ⓘ sulphide mineralization ⓘ |
| hazard |
potential flank collapse
ⓘ
submarine eruptions ⓘ tsunami generation risk ⓘ |
| lastEruption | Holocene (submarine activity inferred) ⓘ |
| length | about 70 kilometres ⓘ |
| locatedIn |
Mediterranean Sea
ⓘ
Tyrrhenian Sea ⓘ Tyrrhenian Sea ⓘ
surface form:
southern Tyrrhenian Sea
|
| maximumElevation | about 500 metres below sea level ⓘ |
| monitoring |
bathymetric surveys
ⓘ
geophysical surveys ⓘ seismic monitoring ⓘ |
| mountainType | submarine volcano ⓘ |
| namedAfter | Luigi Ferdinando Marsili ⓘ |
| nearbyCity |
Calabria
ⓘ
Sicily ⓘ |
| orientation | northwest–southeast ⓘ |
| overlies | thinned continental crust ⓘ |
| partOf |
Aeolian Arc
ⓘ
surface form:
Aeolian volcanic arc
Tyrrhenian back-arc basin system ⓘ
surface form:
Southern Tyrrhenian back-arc basin
|
| relativeImportance | one of the most prominent volcanic structures in the Mediterranean ⓘ |
| relativeSize | one of the largest submarine volcanoes in Europe ⓘ |
| rockType |
basalt
ⓘ
basaltic andesite ⓘ |
| seaFloorProvince | Tyrrhenian back-arc basin ⓘ |
| studiedBy |
Istituto Nazionale di Geofisica e Vulcanologia
ⓘ
surface form:
Italian National Institute of Geophysics and Volcanology
|
| subductionOf | Ionian plate ⓘ |
| summitDepth | approximately 450–500 metres below sea level ⓘ |
| tectonicSetting |
back-arc basin
ⓘ
subduction-related volcanism ⓘ |
| volcanicArcOrBelt | Aeolian Arc ⓘ |
| width | about 30 kilometres ⓘ |
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: Marsili Seamount Description of subject: Marsili Seamount is a large, active submarine volcano in the southern Tyrrhenian Sea and one of the most prominent volcanic structures in the Mediterranean.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Marsili seamount