Eastern Volcanic Zone
Zone — systems within: Hekla · Vatnafjöll · Torfajökull · Tindfjallajökull · Eyjafjallajökull · Katla (Mýrdalsjökull) · Vestmannaeyjar · Bárðarbunga · Grímsvötn
Points = earthquake locations in the selected window, coloured by magnitude: M3+ · M2+ · smaller (a sample if more than 800).
Earthquakes
30
Largest
M3.3
M3,0+
2
Depth range
0–14 km
Earthquakes over time
Cumulative count · 30 earthquakes · total moment ≈ M3.5 · count moment
No significant hypocenter migration — activity is stationary (R²=0.01, n=30); 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
95
Largest
M3.3
M3,0+
2
Depth range
0–19 km
Earthquakes over time
Cumulative count · 95 earthquakes · total moment ≈ M3.5 · count moment
No significant hypocenter migration — activity is stationary (R²=0.01, n=95); 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
267
Largest
M3.3
M3,0+
2
Depth range
0–29 km
Earthquakes over time
Cumulative count · 267 earthquakes · total moment ≈ M3.5 · count moment
No significant hypocenter migration — activity is stationary (R²=0.00, n=267); 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
853
Largest
M3.3
M3,0+
3
Depth range
0–29 km
Earthquakes over time
Cumulative count · 853 earthquakes · total moment ≈ M3.7 · count moment
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
6260
Largest
M4.8
M3,0+
29
Depth range
0–30 km
Earthquakes over time
Cumulative count · 6260 earthquakes · total moment ≈ M5.0 · count moment
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.
Gutenberg-Richter b ≈ 0.86 ± 0.04 (i.e. likely 0.82–0.90, M≥1.7, n=442)
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
10210
Largest
M4.8
M3,0+
41
Depth range
0–30 km
Earthquakes over time
Cumulative count · 10210 earthquakes · total moment ≈ M5.1 · count moment
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.
Gutenberg-Richter b ≈ 0.88 ± 0.03 (i.e. likely 0.85–0.91, M≥1.7, n=625)
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.