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Sequence · 2002-09-08

M 7.6 · Observed seismic cluster · 68 km ESE of Aitape, 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 cluster60
M6+3
Analysis radius436 km
Observation window14 days
Largest secondary eventM 6.3
Quake Pulse · Major sequence

What the sequence shows

After the M 7.6 reference event, Quake Pulse counts 39 M4+ event(s) in the first 24 hours and 50 in the first 7 days. Fourteen-day M4.5+ activity is about 21.7× the average equivalent derived from the previous year. The largest secondary event is M 1.3 below the reference event.

93/100Sequence score
Events in the previous 24 h0
In the first hour6
In the first 24 hours39
In the first 7 days50
Within 14 days59
Peak one-hour count13

Local historical context

Descriptive comparison with M4.5+ events observed in the same radius during the 365 days before the sequence.

M4.5+ events / 365 d71Average 14-day equivalent2.7Activity / baseline ratio21.7×

A ratio above 1 means denser M4.5+ activity than the average equivalent derived from the previous 365 days. It is not a risk measure or a forecast.

Reference event

Largest secondary eventM 6.3Magnitude gapM 1.3Observed duration12.8 d

Earlier events are shown as context only. They are not labelled precursors and should not be interpreted as predictive signals.

Evolving sequence map

Shows M4+ cluster events according to elapsed time after the reference event.

1 hour24 hours7 days14 days
68 km ESE of Aitape, Papua New Guinea · 436 kmInteractive 3D view of earthquakes within 436 km of 68 km ESE of Aitape, Papua New Guinea.68 km ESE of Aitape, Papua New GuineaM 5.2 · 36 km NW of Wewak, Papua New Guinea · 51.6 kmM 5.0 · 29 km ENE of Wewak, Papua New Guinea · 105.6 kmM 4.6 · 21 km NNE of Wewak, Papua New Guinea · 81.9 kmM 5.0 · 17 km NE of Wewak, Papua New Guinea · 88.4 kmM 4.9 · 59 km NW of Wewak, Papua New Guinea · 33.1 kmM 4.7 · 48 km NW of Wewak, Papua New Guinea · 41.4 kmM 4.8 · 30 km N of Wewak, Papua New Guinea · 72.4 kmM 4.8 · 84 km NNW of Wewak, Papua New Guinea · 55.0 kmM 4.9 · 25 km N of Wewak, Papua New Guinea · 72.6 kmM 4.6 · 59 km NW of Wewak, Papua New Guinea · 41.1 kmM 4.8 · 42 km NW of Wewak, Papua New Guinea · 49.7 kmM 4.9 · 74 km ENE of Aitape, Papua New Guinea · 45.3 kmM 4.5 · 51 km E of Aitape, Papua New Guinea · 24.9 kmM 4.6 · 103 km N of Wewak, Papua New Guinea · 112.3 kmM 4.9 · 34 km E of Wewak, Papua New Guinea · 113.2 kmM 4.9 · 32 km NE of Wewak, Papua New Guinea · 102.5 kmM 5.0 · 56 km ESE of Aitape, Papua New Guinea · 12.6 kmM 4.8 · 72 km NW of Wewak, Papua New Guinea · 38.4 kmM 5.0 · 18 km N of Wewak, Papua New Guinea · 74.6 kmM 4.8 · 33 km NNW of Wewak, Papua New Guinea · 66.0 kmM 4.9 · 63 km NW of Wewak, Papua New Guinea · 32.4 kmM 5.1 · 25 km NE of Wewak, Papua New Guinea · 94.5 kmM 5.1 · 45 km NW of Wewak, Papua New Guinea · 40.2 kmM 4.5 · 47 km NNW of Wewak, Papua New Guinea · 53.1 kmM 4.5 · 48 km NW of Wewak, Papua New Guinea · 41.3 kmM 4.6 · 64 km WNW of Wewak, Papua New Guinea · 24.0 kmM 4.6 · 45 km NW of Wewak, Papua New Guinea · 42.9 kmM 5.1 · 33 km NW of Wewak, Papua New Guinea · 51.3 kmM 4.8 · 65 km WNW of Wewak, Papua New Guinea · 17.8 kmM 4.9 · 61 km NNW of Wewak, Papua New Guinea · 59.9 kmM 4.6 · 36 km NW of Wewak, Papua New Guinea · 52.4 kmM 5.0 · 65 km NW of Wewak, Papua New Guinea · 38.0 kmM 5.0 · 49 km NNW of Wewak, Papua New Guinea · 51.3 kmM 5.6 · 77 km ENE of Aitape, Papua New Guinea · 40.6 kmM 5.2 · 66 km NW of Wewak, Papua New Guinea · 39.3 kmM 4.7 · 77 km NW of Wewak, Papua New Guinea · 32.6 kmM 4.8 · 67 km NW of Wewak, Papua New Guinea · 40.9 kmM 4.6 · 51 km WNW of Wewak, Papua New Guinea · 32.2 kmM 4.7 · 73 km WNW of Wewak, Papua New Guinea · 9.9 km
68 km ESE of Aitape, Papua New Guinea436 km39 Recent earthquakes

Detailed timeline

Dots represent M4+ events retained by the sequence detector. Dot size depends on magnitude.

0 h24 h7 d14 d

Sequences are descriptive groupings based on spatial and temporal proximity. Quake Pulse does not establish a causal link between every event here and does not provide earthquake forecasts.

Quake Pulse

Main-event impact

Shallow

55/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.668 km ESE of Aitape, Papua New Guinea13.0 km2002-09-08 18:44:23 UTCView event →
M 5.236 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 18:50:06 UTCView event →
M 5.029 km ENE of Wewak, Papua New Guinea10.0 km2002-09-08 18:52:36 UTCView event →
M 4.621 km NNE of Wewak, Papua New Guinea10.0 km2002-09-08 18:58:59 UTCView event →
M 5.017 km NE of Wewak, Papua New Guinea10.0 km2002-09-08 19:00:16 UTCView event →
M 4.959 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 19:23:55 UTCView event →
M 4.748 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 19:43:37 UTCView event →
M 4.830 km N of Wewak, Papua New Guinea10.0 km2002-09-08 19:52:24 UTCView event →
M 4.884 km NNW of Wewak, Papua New Guinea10.0 km2002-09-08 19:57:09 UTCView event →
M 4.925 km N of Wewak, Papua New Guinea10.0 km2002-09-08 19:57:33 UTCView event →
M 4.659 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 20:01:20 UTCView event →
M 4.842 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 20:01:44 UTCView event →
M 4.974 km ENE of Aitape, Papua New Guinea10.0 km2002-09-08 20:19:15 UTCView event →
M 4.551 km E of Aitape, Papua New Guinea10.0 km2002-09-08 20:23:40 UTCView event →
M 4.6103 km N of Wewak, Papua New Guinea10.0 km2002-09-08 20:26:23 UTCView event →
M 4.934 km E of Wewak, Papua New Guinea10.0 km2002-09-08 20:27:41 UTCView event →
M 4.932 km NE of Wewak, Papua New Guinea10.0 km2002-09-08 20:31:52 UTCView event →
M 5.056 km ESE of Aitape, Papua New Guinea10.0 km2002-09-08 20:33:41 UTCView event →
M 4.872 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 20:38:37 UTCView event →
M 5.018 km N of Wewak, Papua New Guinea10.0 km2002-09-08 20:42:54 UTCView event →
M 4.833 km NNW of Wewak, Papua New Guinea10.0 km2002-09-08 20:46:23 UTCView event →
M 4.963 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 21:02:51 UTCView event →
M 5.125 km NE of Wewak, Papua New Guinea10.0 km2002-09-08 21:05:34 UTCView event →
M 5.145 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 21:18:10 UTCView event →
M 4.547 km NNW of Wewak, Papua New Guinea10.0 km2002-09-08 21:35:13 UTCView event →
M 4.548 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 21:43:04 UTCView event →
M 4.664 km WNW of Wewak, Papua New Guinea10.0 km2002-09-08 21:51:47 UTCView event →
M 4.645 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 21:58:15 UTCView event →
M 5.133 km NW of Wewak, Papua New Guinea10.0 km2002-09-08 22:07:49 UTCView event →
M 4.865 km WNW of Wewak, Papua New Guinea10.0 km2002-09-08 23:55:08 UTCView event →
M 4.961 km NNW of Wewak, Papua New Guinea10.0 km2002-09-09 01:22:26 UTCView event →
M 4.636 km NW of Wewak, Papua New Guinea10.0 km2002-09-09 01:37:43 UTCView event →
M 5.065 km NW of Wewak, Papua New Guinea10.0 km2002-09-09 03:13:55 UTCView event →
M 5.049 km NNW of Wewak, Papua New Guinea10.0 km2002-09-09 03:17:30 UTCView event →
M 5.677 km ENE of Aitape, Papua New Guinea10.0 km2002-09-09 04:03:28 UTCView event →
M 5.266 km NW of Wewak, Papua New Guinea10.0 km2002-09-09 05:46:10 UTCView event →
M 4.777 km NW of Wewak, Papua New Guinea10.0 km2002-09-09 09:49:44 UTCView event →
M 4.867 km NW of Wewak, Papua New Guinea10.0 km2002-09-09 12:08:47 UTCView event →
M 4.651 km WNW of Wewak, Papua New Guinea10.0 km2002-09-09 13:54:00 UTCView event →
M 4.773 km WNW of Wewak, Papua New Guinea10.0 km2002-09-09 18:04:46 UTCView event →
M 4.555 km NE of Angoram, Papua New Guinea10.0 km2002-09-09 20:20:39 UTCView event →
M 5.022 km WNW of Wewak, Papua New Guinea10.0 km2002-09-10 05:50:14 UTCView event →
M 5.148 km E of Wewak, Papua New Guinea10.0 km2002-09-10 20:54:39 UTCView event →
M 4.633 km SE of Aitape, Papua New Guinea10.0 km2002-09-11 00:13:48 UTCView event →
M 4.745 km SSE of Angoram, Papua New Guinea33.0 km2002-09-11 02:00:36 UTCView event →
M 4.5137 km WSW of Abepura, Indonesia33.0 km2002-09-11 04:57:54 UTCView event →
M 5.244 km ESE of Wewak, Papua New Guinea10.0 km2002-09-11 19:48:01 UTCView event →
M 4.5112 km SSW of Vanimo, Papua New Guinea33.0 km2002-09-12 00:45:19 UTCView event →
M 4.919 km ESE of Aitape, Papua New Guinea10.0 km2002-09-12 01:53:49 UTCView event →
M 4.943 km N of Angoram, Papua New Guinea10.0 km2002-09-13 04:05:29 UTCView event →
M 4.673 km E of Angoram, Papua New Guinea47.5 km2002-09-15 06:05:23 UTCView event →
M 4.645 km ESE of Aitape, Papua New Guinea10.0 km2002-09-16 11:51:09 UTCView event →
M 6.341 km ESE of Aitape, Papua New Guinea10.0 km2002-09-16 13:23:00 UTCView event →
M 5.146 km ESE of Aitape, Papua New Guinea10.0 km2002-09-17 05:31:39 UTCView event →
M 6.049 km ESE of Aitape, Papua New Guinea10.0 km2002-09-17 11:20:23 UTCView event →
M 4.749 km ESE of Aitape, Papua New Guinea10.0 km2002-09-17 19:11:28 UTCView event →
M 4.859 km ESE of Aitape, Papua New Guinea10.0 km2002-09-17 19:44:41 UTCView event →
M 4.753 km E of Aitape, Papua New Guinea10.0 km2002-09-17 20:31:50 UTCView event →
M 4.956 km ESE of Aitape, Papua New Guinea10.0 km2002-09-18 03:43:31 UTCView event →
M 4.748 km ESE of Aitape, Papua New Guinea10.0 km2002-09-21 13:23:30 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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