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Research draft

earthquake

vr.tr.earthquake · ACT.ACT

Let an agent handle earthquakes safety-first: give protective actions and tsunami warnings, route people to emergency services and official sources, then explain causes, measurement and preparedness.

Thing Registry Activities and processes

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

Let an agent handle earthquakes safety-first: give protective actions and tsunami warnings, route people to emergency services and official sources, then explain causes, measurement and preparedness.

A sudden shaking of the ground caused by the release of energy in the Earth crust, usually by slip on a fault, measured by magnitude such as moment magnitude and by intensity scales such as EMS-98 or Modified Mercalli; earthquakes can trigger tsunamis, landslides and fires.

What it is for: A natural hazard and geological process.

It can be give protective actions during shaking; find official earthquake and tsunami information; explain magnitude and intensity; prepare homes and families.

Distinguishing features

Sudden fault slip

Measured by magnitude and intensity

Often followed by aftershocks

Cannot be predicted precisely

What it looks like

Ground shaking, damaged buildings, cracks and landslides; recorded on seismograms.

How it is recognised

Seismograms and shake maps

Aftershock sequences

Explosions and quarry blasts can mimic small quakes

Related models

is a kind of - category

geologic activity

is caused by - cause

fault slip

can trigger - secondary hazard

tsunami

is measured by - instrument

seismometer

In practice

Families and kinds

interplate and intraplate earthquakes

foreshocks, mainshocks and aftershocks

deep and shallow earthquakes

induced earthquakes

low-frequency and slow earthquakes

Standards and regulation

Seismic building codes such as Eurocode 8

National civil protection law

Sendai Framework for Disaster Risk Reduction

Failure modes and hazards

Building collapse and falling objects

Tsunamis after coastal quakes

False earthquake predictions and rumours

Also called

foreshockEMS intensity XI earthquakeearthquake in Japanearthquake in Vanuatulow-frequency earthquakeinterplate earthquakeearthquake doubletearthquake sequencepaleoearthquakeIturup earthquakemainshockShikotan earthquakemulti-segment earthquakeEarthquakes in KoreaEMS intensity I earthquakeEMS intensity II earthquakeEMS intensity III earthquakeEMS intensity IV earthquakeEMS intensity V earthquakeEMS intensity VI earthquakeEMS intensity VII earthquakeEMS intensity VIII earthquakeEMS intensity IX earthquakeEMS intensity X earthquakeEMS intensity XII earthquakemicroseismKuril Islands earthquakeurban earthquakeinduced seismicityearthquake rupturedeep-focus earthquakeearthquake in New Zealandstarquakeintraplate earthquakesubmarine earthquakeaftershockintermediate-depth earthquakeshallow-focus earthquakevolcano tectonic earthquakecryoseism

+29

Where this came from

wikidata · CC0 1.0

Source repository Registry entry point

Also registered as vr.tr.earthquake

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

During Shaking now.

Safety comes first.

Protect

Protective action.

Protect

Protective action.

  1. Is the ground shaking now? boundary
  2. Should the person drop, take cover under sturdy furniture and hold on, staying away from windows? action

Tsunami

Coastal warning.

Tsunami

Tsunami warning.

  1. Is the person on a coast after strong or long shaking, or is a tsunami warning in force? boundary
  2. Should they move to high ground or inland immediately? action
After After shaking.

Hazards remain.

Check

Injuries and hazards.

Check

After the quake.

  1. Is anyone injured or trapped, or is there a smell of gas? boundary
  2. Should emergency services be called and the building left if unsafe? action

Official

Official information.

Official

Official information.

  1. What do official seismological agencies report about this earthquake? provenance
  2. Are aftershock forecasts available? provenance
Science Measurement.

Numbers need context.

Magnitude

Size.

Magnitude

Magnitude.

  1. What is the magnitude, and how does it differ from intensity? measurement
  2. Which agency measured it? provenance

Prediction

Forecasting limits.

Prediction

Prediction limits.

  1. Can earthquakes be predicted, according to seismologists? provenance
  2. How should rumours of predictions be handled? action
Prepare Preparedness.

Preparation reduces harm.

Home

Home preparation.

Home

Home preparation.

  1. Which home preparations do civil protection authorities recommend? provenance
  2. How should furniture be secured? action

Buildings

Seismic codes.

Buildings

Seismic safety of buildings.

  1. Which seismic code applies here, and is this building assessed? provenance
  2. Who can carry out an assessment? provenance

What the second pass must settle

  • Should notable earthquakes be separate entries?
  • How should official feeds be linked?
  • How should induced seismicity be linked?
Draft as JSON