Sequence · 2011-04-23

M 6.8 · Observed seismic cluster · 79 km W of Kirakira, Solomon Islands

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 cluster4
M6+1
Analysis radius308 km
Observation window14 days
Largest secondary eventM 5.7
Quake Pulse

Sequence timeline

Within first 24 hours1
Within first 7 days3
Observed duration9.5 d
Gap from reference eventM 1.1
0 h9.5 d
Quake Pulse

Main-event impact

17 Felt reports · Intermediate

55/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.879 km W of Kirakira, Solomon Islands79.0 km2011-04-23 04:16:54 UTCView event →
M 4.976 km SE of Honiara, Solomon Islands32.3 km2011-04-26 22:20:28 UTCView event →
M 5.784 km SE of Honiara, Solomon Islands11.0 km2011-04-28 07:42:34 UTCView event →
M 5.087 km SE of Honiara, Solomon Islands17.9 km2011-05-02 16:41:46 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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