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Sequence · 2003-10-31

M 7.0 · Observed seismic cluster · 133 km ESE of Ishinomaki, 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 cluster22
M6+1
Analysis radius340 km
Observation window14 days
Largest secondary eventM 5.9
Quake Pulse

Sequence timeline

Within first 24 hours6
Within first 7 days16
Observed duration11.7 d
Gap from reference eventM 1.1
0 h11.7 d
Quake Pulse

Main-event impact

Shallow

52/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.0133 km ESE of Ishinomaki, Japan10.0 km2003-10-31 01:06:28 UTCView event →
M 4.7149 km ESE of Ishinomaki, Japan10.0 km2003-10-31 05:31:08 UTCView event →
M 4.6173 km ESE of Ishinomaki, Japan10.0 km2003-10-31 08:17:33 UTCView event →
M 4.6168 km ESE of Ishinomaki, Japan10.0 km2003-10-31 08:24:51 UTCView event →
M 5.213 km S of Tsuruoka, Japan153.2 km2003-10-31 14:15:09 UTCView event →
M 5.0177 km ESE of Ishinomaki, Japan10.0 km2003-11-01 00:26:56 UTCView event →
M 4.8175 km ESE of Ishinomaki, Japan10.0 km2003-11-01 09:25:12 UTCView event →
M 4.6185 km E of Namie, Japan10.0 km2003-11-01 11:36:25 UTCView event →
M 5.9173 km ESE of Ishinomaki, Japan10.0 km2003-11-01 13:10:07 UTCView event →
M 4.6193 km ESE of Ishinomaki, Japan10.0 km2003-11-01 13:38:01 UTCView event →
M 4.8182 km E of Namie, Japan10.0 km2003-11-01 14:30:42 UTCView event →
M 4.7191 km E of Namie, Japan10.0 km2003-11-01 15:24:53 UTCView event →
M 4.6191 km ESE of Ishinomaki, Japan10.0 km2003-11-02 02:01:38 UTCView event →
M 5.3172 km ESE of Ishinomaki, Japan10.0 km2003-11-02 02:58:14 UTCView event →
M 5.4116 km E of Namie, Japan10.0 km2003-11-03 07:11:33 UTCView event →
M 4.8171 km E of Namie, Japan10.0 km2003-11-06 03:30:45 UTCView event →
M 4.65 km SE of Funaishikawa, Japan77.9 km2003-11-08 01:22:01 UTCView event →
M 5.0166 km SE of ?funato, Japan10.0 km2003-11-08 01:57:37 UTCView event →
M 4.9192 km E of Namie, Japan10.0 km2003-11-08 20:26:03 UTCView event →
M 4.7182 km E of Namie, Japan10.0 km2003-11-09 13:05:41 UTCView event →
M 5.0202 km ESE of Ishinomaki, Japan10.0 km2003-11-10 08:11:20 UTCView event →
M 4.8201 km E of Namie, Japan10.0 km2003-11-11 16:51:01 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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