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🧠 MODULE 01 // SEISMOLOGY // 2026-05-21 // PORT-AU-PRINCE, HAITI

Inside Volcanic Hazard Assessment: How SO2, Seismics & Thermals Drive Scores

How NASA EONET events, SO2 emissions, seismic swarms, and thermal anomalies combine into Brain Dashboard's volcanic hazard score.

POWERED BY USGS · NASA · NOAA
READ TIME ~5 MIN
PUBLISHED 2026-05-21 04:44:28 UTC
CITY FOCUS PORT-AU-PRINCE
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// LIVE SEISMIC MAP — REAL-TIME DATA
DATA: USGS · NASA FIRMS · NOAA SWPC · OPEN-METEO · COPERNICUS SAR
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Right now, four volcanoes are moving. Rincon de la Vieja is venting ash. Masaya's crater lake is heating. Piton de la Fournaise's lava is flowing. Mayon is in unrest. But which one matters most to your region? The answer isn't guesswork—it's math. On the Pandita Data Brain Dashboard, every active volcano on Earth gets a live risk score built from four independent scientific signals that together tell you: Is this volcano waking up, or just breathing?

THE VOLCANIC HAZARD FORMULA

Volcanic risk assessment requires layered intelligence. A single seismic spike doesn't mean eruption. A burst of SO₂ could signal degassing or magma rise. NASA satellite thermal data can miss shallow heat. That's why the Brain Dashboard weighs four proven indicators:

🛰
NASA EONET Active Events
Real-time satellite thermal hotspots, ash plumes, and lava fountains detected across infrared bands. Updated hourly.
40% weight
📍
Seismicity Near Volcanoes
Magnitude, frequency, and depth of earthquakes within 15 km of the crater. Shallow swarms signal magma movement.
30% weight
💨
SO₂ Emissions & Thermal Anomaly
Sulfur dioxide plumes (MERRA-2) and sustained thermal elevation indicate active degassing or rising magma.
20% + 10% weight

WHY SO₂ IS THE KEY VOLCANIC SIGNAL

Sulfur dioxide is volcanic truth-telling. Unlike ash (which can be old or reworked by wind), SO₂ is generated only when fresh magma reaches the upper crust or actively erupts. The Brain Dashboard ingests SO₂ concentration data from MERRA-2 reanalysis and CALIOP lidar observations. A sustained elevation—say, 15+ DU (Dobson Units) above baseline for a volcano—flags magma ascent. This is why SO₂ is weighted separately; it cuts through noise.

2–4 hours
Satellite refresh cycle for thermal hotspots
15 km
Seismic detection radius around crater
72 hours
SO₂ plume travel & decay window
0.1–2.0 K
Thermal anomaly detection sensitivity

THE SEISMIC-VOLCANIC CONNECTION

REAL-TIME INTEGRATION

The Brain Dashboard ingests USGS Earthquake Hazards Program feeds and pairs them with volcano-specific metadata. When seismicity spikes near Mayon or Piton de la Fournaise, the algorithm asks: Is this shallow (magma-driven) or deep (regional tectonics)? Shallow swarms within 5 km of the summit raise the risk score significantly. Deep quakes are downweighted. This distinction prevents false alarms and catches genuine unrest.

Visit the Brain Dashboard to see live risk scores for every volcano. Hover over Rincon de la Vieja, Masaya, Piton de la Fournaise, or Mayon to see which signal is driving today's score. For city-level vulnerability, check the Disaster Report to see downwind and downslope exposure. Volcanic risk isn't random. It's readable. It's now.

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