Sequence · 2003-03-11

M 6.8 · Observed seismic cluster · 114 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 cluster11
M6+1
Analysis radius308 km
Observation window14 days
Largest secondary eventM 5.7
Quake Pulse

Sequence timeline

Within first 24 hours4
Within first 7 days7
Observed duration13.2 d
Gap from reference eventM 1.1
0 h13.2 d
Quake Pulse

Main-event impact

Shallow

51/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.8114 km ESE of Kokopo, Papua New Guinea40.2 km2003-03-11 07:27:32 UTCView event →
M 5.7104 km ESE of Kokopo, Papua New Guinea33.0 km2003-03-11 07:35:42 UTCView event →
M 5.2121 km ESE of Kokopo, Papua New Guinea33.0 km2003-03-11 07:55:39 UTCView event →
M 4.722 km SW of Kokopo, Papua New Guinea78.4 km2003-03-11 23:55:51 UTCView event →
M 4.6158 km E of Kokopo, Papua New Guinea108.5 km2003-03-12 15:52:43 UTCView event →
M 4.6121 km SW of Kokopo, Papua New Guinea33.0 km2003-03-15 03:17:25 UTCView event →
M 4.5188 km ESE of Kimbe, Papua New Guinea54.0 km2003-03-16 13:48:17 UTCView event →
M 5.267 km SW of Kokopo, Papua New Guinea121.2 km2003-03-18 13:31:10 UTCView event →
M 4.5147 km WNW of Panguna, Papua New Guinea156.8 km2003-03-22 17:26:08 UTCView event →
M 4.661 km ESE of Kokopo, Papua New Guinea83.5 km2003-03-23 16:19:15 UTCView event →
M 4.7104 km W of Panguna, Papua New Guinea33.0 km2003-03-24 12:33:03 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.

Blog

Latest from the blog

Guides, explainers and practical reading to go beyond the live data.

View all articles →