Sequence · 2023-01-09

M 7.6 · Observed seismic cluster · Pulau Pulau Tanimbar, Indonesia

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 cluster13
M6+1
Analysis radius436 km
Observation window14 days
Largest secondary eventM 5.4
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 8 in the first 7 days. Fourteen-day M4.5+ activity is about 2.0× the average equivalent derived from the previous year. The largest secondary event is M 2.2 below the reference event.

84/100Sequence score
Events in the previous 24 h0
In the first hour1
In the first 24 hours3
In the first 7 days8
Within 14 days12
Peak one-hour count1

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 d160Average 14-day equivalent6.1Activity / baseline ratio2.0×

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 5.4Magnitude gapM 2.2Observed duration13.0 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.

Pulau Pulau Tanimbar, Indonesia · 436 kmInteractive 3D view of earthquakes within 436 km of Pulau Pulau Tanimbar, Indonesia.Pulau Pulau Tanimbar, IndonesiaM 5.4 · Pulau Pulau Tanimbar, Indonesia · 12.1 kmM 4.5 · Kepulauan Babar, Indonesia · 35.8 kmM 4.5 · Kepulauan Babar, Indonesia · 4.3 km
Pulau Pulau Tanimbar, Indonesia436 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

216 Felt reports · PAGER GREEN · Intermediate

68/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.6Pulau Pulau Tanimbar, Indonesia105.0 km2023-01-09 17:47:35 UTCView event →
M 5.4Pulau Pulau Tanimbar, Indonesia108.2 km2023-01-09 18:09:53 UTCView event →
M 4.5Kepulauan Babar, Indonesia77.9 km2023-01-09 21:25:22 UTCView event →
M 4.5Kepulauan Babar, Indonesia93.8 km2023-01-10 02:49:33 UTCView event →
M 5.0196 km SW of Tual, Indonesia12.5 km2023-01-11 11:53:25 UTCView event →
M 4.6Pulau Pulau Tanimbar, Indonesia86.8 km2023-01-13 12:44:50 UTCView event →
M 4.5299 km WSW of Tual, Indonesia131.3 km2023-01-13 22:25:44 UTCView event →
M 4.5241 km NE of Lospalos, Timor Leste153.9 km2023-01-14 04:10:33 UTCView event →
M 4.5Banda Sea100.7 km2023-01-15 22:25:37 UTCView event →
M 4.838 km SE of Ambon, Indonesia128.2 km2023-01-17 02:09:35 UTCView event →
M 4.6129 km N of Tual, Indonesia10.0 km2023-01-21 13:29:08 UTCView event →
M 4.8Banda Sea213.6 km2023-01-22 06:16:02 UTCView event →
M 4.5Kepulauan Barat Daya, Indonesia159.8 km2023-01-22 16:57:12 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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