Iceland Seismic Tremor Monitor

Live Harmonic Tremor Charts

The top row of this monitor plots harmonic tremor across several frequency bands for Fagradalsfjall, Askja and Katla. Rising tremor amplitude is one of the clearest precursors to a volcanic eruption, and the lines update automatically as fresh readings arrive.

Helicorder Seismograms

Below the tremor charts sit live helicorder seismograms — the classic stacked traces that record every ground vibration near each volcano. A burst of dense, jagged lines marks a swarm of earthquakes, the kind of signal that draws volcano watchers and researchers alike.

A Continuous Volcano-Monitoring Broadcast

This is a software-rendered data feed, not a scenic camera: an always-on dashboard that aggregates seismic instrumentation into a single board. It offers an endlessly compelling way to follow the restless geology of one of Earth's most volcanically active islands.