Points = earthquake locations in the selected window, coloured by magnitude: ● M3+ · ● M2+ · ● smaller (a sample if more than 800).
Earthquakes
42
Largest
M2.1
M3,0+
0
Depth range
0–14 km
Earthquakes over time
Cumulative count · 42 earthquakes · total moment ≈ M2.4 · countmoment
No significant hypocenter migration — activity is stationary (R²=0.04, n=42); no sign of a propagating dike. Migration shows automatically if R²≥0.30.
Depth (0 km at top). Grey: fixed depth.
Magnitude distribution
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
Earthquakes
145
Largest
M3.2
M3,0+
2
Depth range
0–25 km
Earthquakes over time
Cumulative count · 145 earthquakes · total moment ≈ M3.6 · countmoment
No significant hypocenter migration — activity is stationary (R²=0.10, n=145); no sign of a propagating dike. Migration shows automatically if R²≥0.30.
Depth (0 km at top). Grey: fixed depth.
Magnitude distribution
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
Cumulative count · 279 earthquakes · total moment ≈ M3.6 · countmoment
No significant hypocenter migration — activity is stationary (R²=0.13, n=279); no sign of a propagating dike. Migration shows automatically if R²≥0.30.
Depth (0 km at top). Grey: fixed depth.
Magnitude distribution
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
Note: before February 2026 about half of events lacked an automatic magnitude, so magnitude-dependent figures (b-value, count of M≥X) under-count earlier periods — the catalogue is not homogeneous across this window. Cumulative moment is barely affected.
Earthquakes
34004
Largest
M4.5
M3,0+
113
Depth range
0–28 km
Earthquakes over time
Cumulative count · 34004 earthquakes · total moment ≈ M5.1 · countmoment
Depth (0 km at top). Grey: fixed depth.
Magnitude distribution
Depth cross-sections — color by age (orange=newest, grey=older), point size by M. Rising cluster = possible magma intrusion.
Note: before February 2026 about half of events lacked an automatic magnitude, so magnitude-dependent figures (b-value, count of M≥X) under-count earlier periods — the catalogue is not homogeneous across this window. Cumulative moment is barely affected.
Depth is automatic and uncertain; earthquakes alone do not show magma movement — deformation (GPS) and gas are needed. Grey points: automatic fixed-depth values. b-value computed for M≥1.5 (automatic magnitudes make lower completeness unreliable). Preliminary data.
SENG (Svartsengi) — rapid, step-like deformation (eruption cycles); see chart
REYK (Reykjavík) — reference ~+2 mm/yr
Crustal deformation from continuous GNSS (Nevada Geodetic Lab, Eurasia plate-fixed). Up = land rising (possible magma accumulation), down = subsidence. Daily final solution with about a three-week lag (latest 2026-06-27); third-party reprocessing, not the Met Office real-time solution.
InSAR. InSAR (Sentinel-1 radar) maps surface deformation across the whole area, complementing the GNSS point measurements. Raw interferograms need expertise to read, so they are not shown here — interpreted deformation maps and current status: Icelandic Met Office · raw data: COMET LiCSAR.