Öræfajökull flank zone
Zone — systems within: Öræfajökull · Esjufjöll · Snæfell
Points = earthquake locations in the selected window, coloured by magnitude: M3+ · M2+ · smaller (a sample if more than 800).
Earthquakes
1
Largest
M1.2
M3,0+
0
Depth range
1–1 km
Earthquakes over time
Cumulative count · 1 earthquakes · total moment ≈ M1.2 · count moment
Depth (0 km at top). Grey: fixed depth.
Not enough depth data.
Magnitude distribution
Earthquakes
3
Largest
M1.2
M3,0+
0
Depth range
0–17 km
Earthquakes over time
Cumulative count · 3 earthquakes · total moment ≈ M1.5 · 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
7
Largest
M1.2
M3,0+
0
Depth range
0–17 km
Earthquakes over time
Cumulative count · 7 earthquakes · total moment ≈ M1.5 · 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
51
Largest
M1.9
M3,0+
0
Depth range
0–29 km
Earthquakes over time
Cumulative count · 51 earthquakes · total moment ≈ M2.2 · count moment
Depth (0 km at top) — shallowing in the data (5.2→4.0 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.
Earthquakes
319
Largest
M2.9
M3,0+
0
Depth range
0–29 km
Earthquakes over time
Cumulative count · 319 earthquakes · total moment ≈ M3.0 · 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.
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
537
Largest
M3.9
M3,0+
2
Depth range
0–29 km
Earthquakes over time
Cumulative count · 537 earthquakes · total moment ≈ M4.0 · 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.
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.