1953 Ionian earthquake

E487854

earthquake natural disaster

The 1953 Ionian earthquake was a devastating series of quakes that struck Greece’s Ionian Islands, causing widespread destruction, especially on Kefalonia and Zakynthos, and leading to significant loss of life and mass evacuation.

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All labels observed (3)

Label	Occurrences
1953 Ionian earthquake canonical	2
1953 Cephalonia earthquake	1
1953 Kefalonia earthquake	1

How this entity was disambiguated

This entity first appeared as the object of triple T5032648 — 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: 1953 Ionian earthquake
Context triple: [Argostoli, sufferedEvent, 1953 Ionian earthquake]

A. 1908 Messina earthquake
The 1908 Messina earthquake was a devastating seismic event in southern Italy that, along with the resulting tsunami, destroyed much of Messina and Reggio Calabria and caused one of the highest death tolls of any European earthquake in modern history.
B. 526 Antioch earthquake
The 526 Antioch earthquake was a devastating seismic disaster that struck the city of Antioch (in modern-day Turkey/Syria), killing hundreds of thousands of people and causing widespread destruction.
C. 1963 Skopje earthquake
The 1963 Skopje earthquake was a devastating seismic event that struck the capital of present-day North Macedonia, causing widespread destruction and loss of life and prompting a major international reconstruction effort.
D. 1927 Crimean earthquake
The 1927 Crimean earthquake was a powerful seismic event in the Black Sea region that caused significant damage across Crimea and nearby areas.
E. 1755 Lisbon earthquake
The 1755 Lisbon earthquake was a devastating seismic event that struck Portugal’s capital on All Saints’ Day, triggering massive fires and a tsunami, and profoundly influencing European philosophy, science, and urban planning.
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: 1953 Ionian earthquake
Target entity description: The 1953 Ionian earthquake was a devastating series of quakes that struck Greece’s Ionian Islands, causing widespread destruction, especially on Kefalonia and Zakynthos, and leading to significant loss of life and mass evacuation.

A. 1908 Messina earthquake
The 1908 Messina earthquake was a devastating seismic event in southern Italy that, along with the resulting tsunami, destroyed much of Messina and Reggio Calabria and caused one of the highest death tolls of any European earthquake in modern history.
B. 526 Antioch earthquake
The 526 Antioch earthquake was a devastating seismic disaster that struck the city of Antioch (in modern-day Turkey/Syria), killing hundreds of thousands of people and causing widespread destruction.
C. 1963 Skopje earthquake
The 1963 Skopje earthquake was a devastating seismic event that struck the capital of present-day North Macedonia, causing widespread destruction and loss of life and prompting a major international reconstruction effort.
D. 1927 Crimean earthquake
The 1927 Crimean earthquake was a powerful seismic event in the Black Sea region that caused significant damage across Crimea and nearby areas.
E. 1755 Lisbon earthquake
The 1755 Lisbon earthquake was a devastating seismic event that struck Portugal’s capital on All Saints’ Day, triggering massive fires and a tsunami, and profoundly influencing European philosophy, science, and urban planning.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	earthquake ⓘ natural disaster ⓘ
affectedRegion	Ithaca ⓘ Kefalonia ⓘ Lefkada ⓘ Zakynthos ⓘ western Greece ⓘ linked to: Western Greece
aftershocks	yes ⓘ
alsoKnownAs	1953 Cephalonia earthquake ⓘ linked to: 1953 Ionian earthquake 1953 Kefalonia earthquake ⓘ linked to: 1953 Ionian earthquake
buildingsDamagedOrDestroyedPercentage	about 90% of buildings on Kefalonia and Zakynthos ⓘ
buildingsDestroyed	approximately 27000 ⓘ
casualties	455 deaths ⓘ
cause	subduction of the African Plate beneath the Eurasian Plate ⓘ
consequence	large-scale reconstruction of the Ionian Islands ⓘ mass evacuation of island populations ⓘ significant emigration from the Ionian Islands ⓘ
country	Greece ⓘ
depth	18 km ⓘ
endDate	1953-08-12 ⓘ
homelessPeople	100000+ ⓘ
injuries	2000+ ⓘ
intensityScale	Mercalli intensity scale ⓘ linked to: Mercalli
languageOfName	Greek ⓘ
location	Cephalonia ⓘ linked to: Kefalonia Ionian Islands ⓘ Ithaca ⓘ Kefalonia ⓘ Zakynthos ⓘ
magnitude	7.2 Mw ⓘ
mainShockDate	1953-08-12 ⓘ
mainShockTime	09:24:41 ⓘ
maximumIntensity	X (Extreme) ⓘ
notable	one of the most destructive earthquakes in modern Greek history ⓘ
notableCityDamage	Argostoli ⓘ Lixouri ⓘ Zakynthos town ⓘ linked to: Zakynthos (city)
numberOfMainShocks	3 ⓘ
response	British military assistance ⓘ U.S. military assistance ⓘ international humanitarian aid ⓘ
seismicZone	Hellenic Arc ⓘ
startDate	1953-08-09 ⓘ
timeZone	UTC ⓘ
tsunami	yes ⓘ
tsunamiHeight	up to 0.5–1 m in some coastal areas ⓘ
type	crustal earthquake ⓘ thrust earthquake ⓘ

How these facts were elicited

Referenced by (4)

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

Argostoli → sufferedEvent → 1953 Ionian earthquake ⓘ

Zakynthos (city) → wasRebuiltAfter → 1953 Ionian earthquake ⓘ

1953 Ionian earthquake → alsoKnownAs → 1953 Kefalonia earthquake ⓘ

linked to: 1953 Ionian earthquake

1953 Ionian earthquake → alsoKnownAs → 1953 Cephalonia earthquake ⓘ