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MÉTHODOLOGIE SISMOLOGIQUE & ARCHITECTURE DES DONNÉES

Méthodologie Scientifique & Architecture de Télémétrie

Comment Earthquake.live ingère, valide, déduplique et analyse les données sismiques des réseaux de surveillance mondiaux en temps réel.

01

Ingestion & Agrégation des Données

Comment les enregistrements sismiques sont collectés et traités.

Earthquake.live ingère des flux sismiques en direct provenant des principaux réseaux sismologiques mondiaux :

USGS

United States Geological Survey

Continuous global GeoJSON feeds updated every minute, providing comprehensive global coverage and high-precision North American telemetry.

EMSC

Euro-Mediterranean Seismological Centre

European, Mediterranean, and global real-time event feeds providing rapid regional event verification and magnitude data.

JMA

Agence Météorologique du Japon

Flux officiels en temps réel de la JMA (bosai quake API) couvrant les séismes dans l'archipel japonais et le Pacifique Nord-Ouest.

02

Normalisation des Données

Extraction de paramètres uniformes entre plusieurs agences de surveillance.

Les données brutes arrivent sous différents formats. Notre pipeline structure chaque événement :

MAGNITUDERounded to 1 decimal place with source scale preservation (Mw, ML, mb).
COORDINATESWGS84 Latitude and Longitude decimal degrees.
FOCAL DEPTHCalculated in kilometers below the surface (absolute positive depth).
UTC TIMESTAMPExact event origin time and latest upstream update timestamp.
03

Échelles de Magnitude & Libération d'Énergie

Comprendre les mesures sismiques logarithmiques.

Les magnitudes publiées sur Earthquake.live proviennent directement des agences officielles (Magnitude de Moment Mw, Magnitude Locale ML ou Ondes de Volume mb).

Gutenberg-Richter Energy Relationlog10(E) = 4.8 + 1.5 · M

Earthquake magnitude is logarithmic. Each whole unit step on the magnitude scale (+1.0) corresponds to approximately a 31.6× increase in released seismic energy and a 10× increase in ground motion amplitude:

MagnitudeClassificationEnergy Comparison
M 3.0 – 3.9
Minor
Often felt indoors, rarely causes damage.
M 4.0 – 4.9
Light
Noticeable shaking of items; minimal structural risk.
M 5.0 – 5.9
Moderate
~31.6× more energy than M4. Can cause damage to weak buildings.
M 6.0 – 6.9
Strong
~1,000× more energy than M4. Destructive across populated areas.
M 7.0+
Major / Great
~31,600× more energy than M4. Severe, widespread regional disaster.
04

Classification de la Profondeur Focale

Catégories de profondeur et impact sur les secousses en surface.

< 70 km • Shallow

Highest shaking intensity at the surface. Less rock dampening between the rupture point and surface infrastructure.

70 – 300 km • Intermediate

Wider felt radius with lower peak ground acceleration at the epicenter due to crustal energy dissipation.

> 300 km • Deep

Originates in deep subduction slabs. Energy is widely dispersed, producing mild shaking over large continental areas.

05

Filtres en Direct & Pages Régionales

Organisation et affichage des données sur la plateforme.

🗺️Real-Time Feed & Map:

Interactive vector map using MapLibre GL showing recent global tremors, categorized by depth and magnitude.

⚡Magnitude Thresholds:

Dedicated feeds for Magnitude 5.0+ (Moderate/Strong) and Magnitude 6.0+ (Major) events.

🌍Regional Pages:

Continuous monitoring for 24 seismically active countries and regions.

⏱️Today's Activity:

Summary of all global seismic events recorded in the rolling 24-hour window.

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Qualité des Données & Consignes de Sécurité

Earthquake magnitudes and locations displayed immediately after an event are preliminary automated estimates published by monitoring agencies (USGS / EMSC / JMA) and are subject to revision as duty seismologists review station data.

Earthquake.live is an informational monitoring tool. In emergency situations, always follow official instructions from your local civil protection and emergency management authorities.