Sequence · 2012-07-28

M 6.5 · Observed seismic cluster · 105 km ESE of Kokopo, Papua New Guinea

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 cluster7
M6+2
Analysis radius260 km
Observation window14 days
Largest secondary eventM 6.1
Quake Pulse

Sequence timeline

Within first 24 hours1
Within first 7 days4
Observed duration13.0 d
Gap from reference eventM 0.4
0 h13.0 d
Quake Pulse

Main-event impact

4 Felt reports · Shallow

47/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.5105 km ESE of Kokopo, Papua New Guinea41.0 km2012-07-28 20:03:56 UTCView event →
M 4.7128 km SE of Kokopo, Papua New Guinea36.9 km2012-07-30 02:51:43 UTCView event →
M 6.1116 km ESE of Kokopo, Papua New Guinea46.0 km2012-08-02 09:56:41 UTCView event →
M 4.894 km ESE of Kokopo, Papua New Guinea35.0 km2012-08-03 02:36:38 UTCView event →
M 4.6173 km SE of Kokopo, Papua New Guinea38.8 km2012-08-07 14:47:52 UTCView event →
M 4.599 km WNW of Panguna, Papua New Guinea165.9 km2012-08-08 09:00:44 UTCView event →
M 4.662 km S of Kokopo, Papua New Guinea65.9 km2012-08-10 19:19:52 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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