Sequence · 2022-07-12

M 6.8 · Observed seismic cluster · Easter Island 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 cluster13
M6+1
Analysis radius308 km
Observation window14 days
Largest secondary eventM 5.6
Quake Pulse · Major sequence

What the sequence shows

After the M 6.8 reference event, Quake Pulse counts 8 M4+ event(s) in the first 24 hours and 12 in the first 7 days. Fourteen-day M4.5+ activity is about 18.4× the average equivalent derived from the previous year. The largest secondary event is M 1.2 below the reference event.

82/100Sequence score
Events in the previous 24 h0
In the first hour1
In the first 24 hours8
In the first 7 days12
Within 14 days12
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 d17Average 14-day equivalent0.7Activity / baseline ratio18.4×

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 5.6Magnitude gapM 1.2Observed duration5.2 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.

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

1 Felt reports · PAGER GREEN · Tsunami indicator · Shallow

58/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.8Easter Island region10.0 km2022-07-12 19:16:58 UTCView event →
M 5.6Easter Island region10.0 km2022-07-12 19:28:48 UTCView event →
M 4.5southern East Pacific Rise10.0 km2022-07-12 20:30:51 UTCView event →
M 5.6Easter Island region10.0 km2022-07-12 21:47:56 UTCView event →
M 4.8Easter Island region10.0 km2022-07-12 22:17:02 UTCView event →
M 4.7Easter Island region10.0 km2022-07-13 00:19:58 UTCView event →
M 4.9Easter Island region10.0 km2022-07-13 00:27:19 UTCView event →
M 4.5Easter Island region10.0 km2022-07-13 11:40:45 UTCView event →
M 4.5Easter Island region10.0 km2022-07-13 14:44:06 UTCView event →
M 4.9Easter Island region10.0 km2022-07-14 03:27:56 UTCView event →
M 4.8Easter Island region10.0 km2022-07-16 09:43:03 UTCView event →
M 4.9Easter Island region10.0 km2022-07-16 10:31:57 UTCView event →
M 5.6Easter Island region10.0 km2022-07-17 23:20:46 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 →