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
16
Largest
M2.3
M3,0+
0
Depth range
0–32 km
Earthquakes over time
Cumulative count · 16 earthquakes · total moment ≈ M2.4 · 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
22
Largest
M2.3
M3,0+
0
Depth range
0–32 km
Earthquakes over time
Cumulative count · 22 earthquakes · total moment ≈ M2.4 · 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
83
Largest
M2.3
M3,0+
0
Depth range
0–32 km
Earthquakes over time
Cumulative count · 83 earthquakes · total moment ≈ M2.7 · count moment
No significant hypocenter migration — activity is stationary (R²=0.13, n=83); 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
278
Largest
M3.0
M3,0+
0
Depth range
0–32 km
Earthquakes over time
Cumulative count · 278 earthquakes · total moment ≈ M3.2 · 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
1375
Largest
M5.2
M3,0+
3
Depth range
0–32 km
Earthquakes over time
Cumulative count · 1375 earthquakes · total moment ≈ M5.2 · count moment
Depth (0 km at top) — shallowing in the data (2.9→1.9 km). 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 ± 0.08 (i.e. likely 0.80–0.96, M≥1.7, n=137)
Earthquakes
3648
Largest
M5.2
M3,0+
10
Depth range
0–32 km
Earthquakes over time
Cumulative count · 3648 earthquakes · total moment ≈ M5.3 · 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 ≈ 0.85 ± 0.06 (i.e. likely 0.78–0.91, M≥1.7, n=210) · low b can accompany magma activity (small sample, interpret with caution)
Earthquakes
5899
Largest
M5.2
M3,0+
16
Depth range
0–32 km
Earthquakes over time
Cumulative count · 5899 earthquakes · total moment ≈ M5.3 · 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 ≈ 0.85 ± 0.05 (i.e. likely 0.80–0.90, M≥1.7, n=290) · low b can accompany magma activity (small sample, interpret with caution)
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
9791
Largest
M5.2
M3,0+
30
Depth range
0–32 km
Earthquakes over time
Cumulative count · 9791 earthquakes · total moment ≈ M5.3 · 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 ≈ 0.87 ± 0.04 (i.e. likely 0.83–0.91, M≥1.7, n=470)
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
20.244
Largest
M5.3
M3.0+
161
Days with data
1.806
This is a reduced view: it is built from the daily aggregate (counts, moment, magnitude bands, depth histogram) rather than individual events. Map points, the depth scatter, cross-sections and the migration fit are therefore missing — they need each event's location and depth. Counts, total moment and the b-value are exact, not approximated.
Earthquakes over time
Cumulative count and moment
Total moment of all events in the window equals a single Mw 5.7
Magnitude distribution
<112025
1–24494
2–3905
3–4139
≥422
Gutenberg-Richter b ≈ 0.79 ± 0.02 (i.e. likely 0.77–0.80, M≥1.7, n=1798)
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
43.045
Largest
M5.3
M3.0+
406
Days with data
3.615
This is a reduced view: it is built from the daily aggregate (counts, moment, magnitude bands, depth histogram) rather than individual events. Map points, the depth scatter, cross-sections and the migration fit are therefore missing — they need each event's location and depth. Counts, total moment and the b-value are exact, not approximated.
Earthquakes over time
Cumulative count and moment
Total moment of all events in the window equals a single Mw 5.8
Magnitude distribution
<128154
1–29941
2–31883
3–4375
≥431
Gutenberg-Richter b ≈ 0.76 ± 0.01 (i.e. likely 0.75–0.78, M≥1.7, n=3845)
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
131.689
Largest
M5.9
M3.0+
2807
Days with data
7.234
This is a reduced view: it is built from the daily aggregate (counts, moment, magnitude bands, depth histogram) rather than individual events. Map points, the depth scatter, cross-sections and the migration fit are therefore missing — they need each event's location and depth. Counts, total moment and the b-value are exact, not approximated.
Earthquakes over time
Cumulative count and moment
Total moment of all events in the window equals a single Mw 6.7
Magnitude distribution
<168531
1–245902
2–311274
3–41959
≥4848
Gutenberg-Richter b ≈ 0.72 ± 0.01 (i.e. likely 0.72–0.73, M≥1.7, n=23613)
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
152.477
Largest
M5.9
M3.0+
3120
Days with data
10.708
This is a reduced view: it is built from the daily aggregate (counts, moment, magnitude bands, depth histogram) rather than individual events. Map points, the depth scatter, cross-sections and the migration fit are therefore missing — they need each event's location and depth. Counts, total moment and the b-value are exact, not approximated.
Earthquakes over time
Cumulative count and moment
Total moment of all events in the window equals a single Mw 6.7
Magnitude distribution
<171060
1–257863
2–317226
3–42260
≥4860
Gutenberg-Richter b ≈ 0.77 ± 0.00 (i.e. likely 0.77–0.78, M≥1.7, n=34000)
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.