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Sequence · 2007-09-30

M 6.6 · Observed seismic cluster · Auckland Islands, New Zealand region

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 cluster17
M6+1
Analysis radius276 km
Observation window14 days
Largest secondary eventM 5.6
Quake Pulse

Sequence timeline

Within first 24 hours4
Within first 7 days16
Observed duration11.3 d
Gap from reference eventM 1.0
0 h11.3 d
Quake Pulse

Main-event impact

33 Felt reports · Shallow

49/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.6Auckland Islands, New Zealand region18.0 km2007-09-30 09:47:51 UTCView event →
M 4.7Auckland Islands, New Zealand region10.0 km2007-09-30 10:53:12 UTCView event →
M 4.5off the west coast of the South Island of New Zealand10.0 km2007-09-30 17:17:50 UTCView event →
M 4.6Auckland Islands, New Zealand region10.0 km2007-10-01 00:15:09 UTCView event →
M 4.7off the west coast of the South Island of New Zealand26.9 km2007-10-01 11:13:45 UTCView event →
M 5.0Auckland Islands, New Zealand region10.0 km2007-10-01 13:35:26 UTCView event →
M 4.6Auckland Islands, New Zealand region10.0 km2007-10-01 14:45:06 UTCView event →
M 5.0Auckland Islands, New Zealand region10.0 km2007-10-01 16:19:57 UTCView event →
M 5.1293 km SW of Riverton, New Zealand10.0 km2007-10-02 06:51:33 UTCView event →
M 4.9Auckland Islands, New Zealand region10.0 km2007-10-02 22:17:03 UTCView event →
M 5.1off the west coast of the South Island of New Zealand10.0 km2007-10-03 01:43:25 UTCView event →
M 5.1off the west coast of the South Island of New Zealand17.4 km2007-10-03 03:32:56 UTCView event →
M 4.5off the west coast of the South Island of New Zealand10.0 km2007-10-03 04:17:14 UTCView event →
M 5.2off the west coast of the South Island of New Zealand7.1 km2007-10-03 18:03:03 UTCView event →
M 4.5off the west coast of the South Island of New Zealand37.2 km2007-10-03 22:19:07 UTCView event →
M 4.6Auckland Islands, New Zealand region10.0 km2007-10-04 08:58:48 UTCView event →
M 5.6Auckland Islands, New Zealand region10.0 km2007-10-11 16:25:05 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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