Sequence · 2022-09-10

M 7.6 · Observed seismic cluster · 70 km E of Kainantu, 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 cluster12
M6+1
Analysis radius436 km
Observation window14 days
Largest secondary eventM 5.7
Quake Pulse · Major sequence

What the sequence shows

After the M 7.6 reference event, Quake Pulse counts 3 M4+ event(s) in the first 24 hours and 6 in the first 7 days. Fourteen-day M4.5+ activity is about 2.2× the average equivalent derived from the previous year. The largest secondary event is M 1.9 below the reference event.

85/100Sequence score
Events in the previous 24 h0
In the first hour2
In the first 24 hours3
In the first 7 days6
Within 14 days11
Peak one-hour count2

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 d129Average 14-day equivalent4.9Activity / baseline ratio2.2×

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 5.7Magnitude gapM 1.9Observed duration12.5 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.

70 km E of Kainantu, Papua New Guinea · 436 kmInteractive 3D view of earthquakes within 436 km of 70 km E of Kainantu, Papua New Guinea.70 km E of Kainantu, Papua New GuineaM 4.6 · 46 km ENE of Kainantu, Papua New Guinea · 31.2 kmM 5.0 · 54 km NNE of Kainantu, Papua New Guinea · 74.8 kmM 4.5 · 66 km E of Kainantu, Papua New Guinea · 4.0 km
70 km E of Kainantu, Papua New Guinea436 km3 Recent earthquakes

Detailed timeline

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

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

102 Felt reports · PAGER YELLOW · Tsunami indicator · Intermediate

80/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.670 km E of Kainantu, Papua New Guinea116.0 km2022-09-10 23:47:00 UTCView event →
M 4.646 km ENE of Kainantu, Papua New Guinea107.8 km2022-09-11 00:08:55 UTCView event →
M 5.054 km NNE of Kainantu, Papua New Guinea107.9 km2022-09-11 00:42:38 UTCView event →
M 4.566 km E of Kainantu, Papua New Guinea105.8 km2022-09-11 01:27:03 UTCView event →
M 5.0eastern New Guinea region, Papua New Guinea93.3 km2022-09-12 15:00:10 UTCView event →
M 4.918 km NE of Goroka, Papua New Guinea100.3 km2022-09-16 15:39:47 UTCView event →
M 5.1126 km NNE of Finschhafen, Papua New Guinea23.4 km2022-09-16 16:18:32 UTCView event →
M 5.495 km ESE of Madang, Papua New Guinea157.9 km2022-09-19 04:29:05 UTCView event →
M 4.566 km SE of Madang, Papua New Guinea93.2 km2022-09-19 17:29:39 UTCView event →
M 5.7136 km N of Lae, Papua New Guinea191.0 km2022-09-21 09:30:47 UTCView event →
M 4.870 km NW of Finschhafen, Papua New Guinea67.2 km2022-09-21 15:49:40 UTCView event →
M 5.498 km WNW of Kandrian, Papua New Guinea82.8 km2022-09-23 12:34:27 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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