1990 Luzon earthquake

E821347

earthquake

The 1990 Luzon earthquake was a powerful magnitude 7.7 quake that struck northern Luzon in the Philippines, causing widespread destruction and thousands of deaths.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (3)

Label	Occurrences
1990 Luzon earthquake canonical	3
1990 Baguio earthquake	1
1990 Northern Luzon earthquake	1

How this entity was disambiguated

This entity first appeared as the object of triple T9795967 — 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: 1990 Luzon earthquake
Context triple: [Philippine Fault System, notableEarthquake, 1990 Luzon earthquake]

A. 1967 Mudurnu Valley earthquake
The 1967 Mudurnu Valley earthquake was a major and destructive seismic event in northwestern Turkey that ruptured a segment of the North Anatolian Fault, causing significant damage and casualties.
B. 2005 Nias–Simeulue earthquake
The 2005 Nias–Simeulue earthquake was a powerful magnitude 8.6 megathrust earthquake off the coast of northern Sumatra that caused widespread destruction and significant casualties in Indonesia.
C. 1946 Nankai earthquake
The 1946 Nankai earthquake was a powerful megathrust earthquake off the coast of southwestern Japan that generated a destructive tsunami and caused widespread damage and casualties in the Nankai region.
D. 1707 Hoei earthquake
The 1707 Hoei earthquake was a massive megathrust earthquake off southwestern Japan that triggered widespread destruction and a large tsunami, and is one of the most powerful earthquakes in Japanese history.
E. 1944 Tonankai earthquake
The 1944 Tonankai earthquake was a powerful undersea megathrust earthquake off the coast of Japan that generated a destructive tsunami and caused extensive damage and loss of life in the Tōkai and Kii Peninsula regions during World War II.
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: 1990 Luzon earthquake
Target entity description: The 1990 Luzon earthquake was a powerful magnitude 7.7 quake that struck northern Luzon in the Philippines, causing widespread destruction and thousands of deaths.

A. 1967 Mudurnu Valley earthquake
The 1967 Mudurnu Valley earthquake was a major and destructive seismic event in northwestern Turkey that ruptured a segment of the North Anatolian Fault, causing significant damage and casualties.
B. 2005 Nias–Simeulue earthquake
The 2005 Nias–Simeulue earthquake was a powerful magnitude 8.6 megathrust earthquake off the coast of northern Sumatra that caused widespread destruction and significant casualties in Indonesia.
C. 1946 Nankai earthquake
The 1946 Nankai earthquake was a powerful megathrust earthquake off the coast of southwestern Japan that generated a destructive tsunami and caused widespread damage and casualties in the Nankai region.
D. 1707 Hoei earthquake
The 1707 Hoei earthquake was a massive megathrust earthquake off southwestern Japan that triggered widespread destruction and a large tsunami, and is one of the most powerful earthquakes in Japanese history.
E. 1944 Tonankai earthquake
The 1944 Tonankai earthquake was a powerful undersea megathrust earthquake off the coast of Japan that generated a destructive tsunami and caused extensive damage and loss of life in the Tōkai and Kii Peninsula regions during World War II.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	earthquake ⓘ
affectedRegion	Cagayan Valley ⓘ Central Luzon ⓘ Cordillera Administrative Region ⓘ Ilocos Region ⓘ Metro Manila ⓘ
aftershocks	thousands of aftershocks ⓘ
alsoKnownAs	1990 Baguio earthquake ⓘ linked to: 1990 Luzon earthquake 1990 Northern Luzon earthquake ⓘ linked to: 1990 Luzon earthquake
casualties	about 1600 deaths ⓘ
continent	Asia ⓘ
country	Philippines ⓘ
damageCost	over US$300 million ⓘ
date	1990-07-16 ⓘ
day	16 ⓘ
depth	25 km ⓘ
displacedPeople	hundreds of thousands displaced ⓘ
epicenter	Rizal, Nueva Ecija ⓘ
faultSystem	Philippine Fault System ⓘ
governmentResponse	large-scale rescue and relief operations ⓘ
impact	disruption of transportation and communication ⓘ severe damage to infrastructure and buildings ⓘ widespread destruction in northern Luzon ⓘ
injuries	more than 3000 people injured ⓘ
intensityScale	Modified Mercalli intensity scale ⓘ
localTime	16:26 PST ⓘ
location	Luzon ⓘ northern Luzon ⓘ
longTermEffect	increased public awareness of earthquake preparedness ⓘ revisions to Philippine building codes ⓘ
magnitude	7.7 ⓘ
magnitudeScale	moment magnitude scale ⓘ
maximumIntensity	IX (Violent) ⓘ
month	July ⓘ
notableCityAffected	Baguio ⓘ Cabanatuan ⓘ linked to: Cabanatuan City Dagupan ⓘ
notableStructureCollapsed	Christian College of the Philippines building in Cabanatuan ⓘ Hyatt Terraces Plaza Hotel in Baguio ⓘ
partOf	history of earthquakes in the Philippines ⓘ
plateInteraction	Philippine Sea Plate–Eurasian Plate ⓘ linked to: Philippine Sea Plate
tectonicSetting	convergent plate boundary ⓘ
timeZone	Philippine Standard Time ⓘ
triggeredEvent	building collapses ⓘ ground ruptures ⓘ landslides ⓘ liquefaction ⓘ
type	strike-slip earthquake ⓘ
year	1990 ⓘ

How these facts were elicited

Referenced by (5)

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

Philippine Fault System → notableEarthquake → 1990 Luzon earthquake ⓘ

Digdig Fault segment → generated → 1990 Luzon earthquake ⓘ

Digdig Fault segment → associatedWith → 1990 Luzon earthquake ⓘ

1990 Luzon earthquake → alsoKnownAs → 1990 Baguio earthquake ⓘ

linked to: 1990 Luzon earthquake

1990 Luzon earthquake → alsoKnownAs → 1990 Northern Luzon earthquake ⓘ