Modified Mercalli intensity scale
E2245
The Modified Mercalli intensity scale is a seismic scale that qualitatively measures the observed effects and damage of an earthquake on people, structures, and the Earth's surface.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mercalli intensity scale | 8 |
| Modified Mercalli intensity scale canonical | 8 |
How this entity was disambiguated
This entity first appeared as the object of triple T29474 — 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: Modified Mercalli intensity scale Context triple: [1906 San Francisco earthquake, intensityScale, Modified Mercalli intensity scale]
-
A.
1989 Loma Prieta earthquake
The 1989 Loma Prieta earthquake was a powerful magnitude 6.9 quake in Northern California that caused widespread damage in the San Francisco Bay Area, including freeway collapses and the disruption of the World Series.
-
B.
Geophysical Service Incorporated
Geophysical Service Incorporated was an early geophysical exploration company that evolved into Texas Instruments, playing a foundational role in the development of modern electronics and semiconductor technology.
-
C.
1906 San Francisco earthquake
The 1906 San Francisco earthquake was a devastating magnitude 7.8 seismic event that struck Northern California, causing widespread destruction and fires that nearly leveled San Francisco and became one of the worst natural disasters in U.S. history.
-
D.
NMTI
NMTI is a prestigious United States presidential award that honors individuals, teams, and companies for outstanding contributions to technological innovation and advancement.
-
E.
The Palestra
The Palestra is a historic college basketball arena on the University of Pennsylvania campus in Philadelphia, renowned as one of the most storied and frequently used venues in the sport.
- 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: Modified Mercalli intensity scale Target entity description: The Modified Mercalli intensity scale is a seismic scale that qualitatively measures the observed effects and damage of an earthquake on people, structures, and the Earth's surface.
-
A.
1989 Loma Prieta earthquake
The 1989 Loma Prieta earthquake was a powerful magnitude 6.9 quake in Northern California that caused widespread damage in the San Francisco Bay Area, including freeway collapses and the disruption of the World Series.
-
B.
Geophysical Service Incorporated
Geophysical Service Incorporated was an early geophysical exploration company that evolved into Texas Instruments, playing a foundational role in the development of modern electronics and semiconductor technology.
-
C.
1906 San Francisco earthquake
The 1906 San Francisco earthquake was a devastating magnitude 7.8 seismic event that struck Northern California, causing widespread destruction and fires that nearly leveled San Francisco and became one of the worst natural disasters in U.S. history.
-
D.
NMTI
NMTI is a prestigious United States presidential award that honors individuals, teams, and companies for outstanding contributions to technological innovation and advancement.
-
E.
The Palestra
The Palestra is a historic college basketball arena on the University of Pennsylvania campus in Philadelphia, renowned as one of the most storied and frequently used venues in the sport.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
earthquake intensity scale
ⓘ
seismic intensity scale ⓘ |
| appliesTo |
Earth's surface
ⓘ
people ⓘ structures ⓘ |
| basedOn |
observed shaking
ⓘ
reported human perception ⓘ structural damage ⓘ |
| category |
Earthquake scales
ⓘ
Seismology ⓘ |
| characterizes | local shaking severity ⓘ |
| dependsOn |
building vulnerability
ⓘ
distance from epicenter ⓘ local ground conditions ⓘ |
| developedFrom |
Modified Mercalli intensity scale
self-linksurface differs
ⓘ
surface form:
Mercalli intensity scale
|
| differentFrom |
Richter magnitude scale
ⓘ
moment magnitude scale ⓘ |
| doesNotMeasure | total energy released by an earthquake ⓘ |
| hasLevelDescription |
I: Not felt
ⓘ
II: Weak ⓘ III: Weak to light ⓘ IV: Light ⓘ IX: Violent ⓘ V: Moderate ⓘ VI: Strong ⓘ VII: Very strong ⓘ VIII: Severe ⓘ X: Extreme ⓘ XI: Extreme to catastrophic ⓘ XII: Catastrophic ⓘ |
| hasMaximumValue | XII ⓘ |
| hasMinimumValue | I ⓘ |
| hasNumberOfLevels | 12 ⓘ |
| measurementType | qualitative ⓘ |
| measures |
earthquake damage
ⓘ
earthquake intensity ⓘ observed effects of earthquakes ⓘ |
| namedAfter | Giuseppe Mercalli ⓘ |
| usedBy |
United States Geological Survey
ⓘ
emergency managers ⓘ engineers ⓘ planners ⓘ |
| usedFor |
describing earthquake effects at specific locations
ⓘ
historical earthquake analysis ⓘ mapping earthquake intensity distribution ⓘ post-earthquake damage assessment ⓘ |
| usedIn |
earthquake engineering
ⓘ
seismology ⓘ |
| usesRomanNumerals | true ⓘ |
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: Modified Mercalli intensity scale Description of subject: The Modified Mercalli intensity scale is a seismic scale that qualitatively measures the observed effects and damage of an earthquake on people, structures, and the Earth's surface.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.
Modified Mercalli intensity scale
→
developedFrom
→
Modified Mercalli intensity scale
self-linksurface differs
ⓘ
this entity surface form:
Mercalli intensity scale
this entity surface form:
Mercalli intensity scale
this entity surface form:
Mercalli intensity scale
this entity surface form:
Mercalli intensity scale
this entity surface form:
Mercalli intensity scale
subject surface form:
Giuseppe Mercalli
this entity surface form:
Mercalli intensity scale
this entity surface form:
Mercalli intensity scale
this entity surface form:
Mercalli intensity scale