earthquake swarms
Sequential seismic bursts
Earthquake swarms are sequences of many small earthquakes occurring in a localized area over days, weeks, or months, without a single dominant mainshock.
Unlike typical earthquake sequences with one large event followed by diminishing aftershocks, swarms feature clusters of similar-magnitude tremors.
They often occur near volcanic regions or geothermal areas: The earthquake swarm near Yellowstone raised concerns about volcanic activity.
- seismographsEarth vibration measuring instruments
- magma chambersSubsurface molten rock reservoirs
- foreshocksSeismic events before mainshock
- tectonic platesMobile crustal sections
- fault linesFractures between rock masses
plate boundaries · landslides · volcanic eruptions · induced seismicity · Richter scale · soil liquefaction · tsunamis · early warning systems · seismic waves · ground shaking · evacuation plans · emergency response · lithosphere · satellite imaging · calderas · accelerometers · subduction zones · ring of fire