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Sequence · 2003-05-26

M 7.0 · Observed seismic cluster · 27 km SSW of ?funato, Japan

Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions.

M4.5+ events in cluster10
M6+1
Analysis radius340 km
Observation window14 days
Largest secondary eventM 4.8
Quake Pulse

Sequence timeline

Within first 24 hours6
Within first 7 days10
Observed duration5.0 d
Gap from reference eventM 2.2
0 h5.0 d
Quake Pulse

Main-event impact

Shallow

54/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.027 km SSW of ?funato, Japan68.0 km2003-05-26 09:24:33 UTCView event →
M 4.629 km E of Ichinoseki, Japan73.1 km2003-05-26 09:40:09 UTCView event →
M 4.635 km ESE of Ichinoseki, Japan66.7 km2003-05-26 10:09:40 UTCView event →
M 4.624 km WSW of ?funato, Japan74.7 km2003-05-26 13:34:16 UTCView event →
M 4.619 km ENE of Hanamaki, Japan33.0 km2003-05-26 13:34:34 UTCView event →
M 4.815 km WSW of ?funato, Japan67.4 km2003-05-26 15:44:16 UTCView event →
M 4.711 km WNW of ?funato, Japan65.8 km2003-05-27 12:12:25 UTCView event →
M 4.523 km S of ?funato, Japan72.7 km2003-05-27 21:24:12 UTCView event →
M 4.6151 km E of Yamada, Japan33.0 km2003-05-30 22:57:01 UTCView event →
M 4.718 km SW of ?funato, Japan67.3 km2003-05-31 09:41:49 UTCView event →

Interpretation

Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions. Historical small-earthquake detection varies through time. Long-term comparisons are most robust at higher magnitude thresholds.

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