Sequence · 2024-03-03

M 6.8 · Observed seismic cluster · Macquarie 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 cluster7
M6+2
Analysis radius308 km
Observation window14 days
Largest secondary eventM 6.1
Quake Pulse · Major sequence

What the sequence shows

After the M 6.8 reference event, Quake Pulse counts 3 M4+ event(s) in the first 24 hours and 4 in the first 7 days. Fourteen-day M4.5+ activity is about 12.0× the average equivalent derived from the previous year. The largest secondary event is M 0.7 below the reference event.

80/100Sequence score
Events in the previous 24 h0
In the first hour0
In the first 24 hours3
In the first 7 days4
Within 14 days6
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 d7Average 14-day equivalent0.3Activity / baseline ratio12.0×

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 6.1Magnitude gapM 0.7Observed duration12.3 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.

Macquarie Island region · 308 kmInteractive 3D view of earthquakes within 308 km of Macquarie Island region.Macquarie Island regionM 4.6 · Macquarie Island region · 74.4 kmM 4.7 · Macquarie Island region · 79.9 kmM 4.5 · Macquarie Island region · 42.9 km
Macquarie Island region308 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

2 Felt reports · PAGER GREEN · Tsunami indicator · Shallow

61/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.8Macquarie Island region23.2 km2024-03-03 16:16:53 UTCView event →
M 4.6Macquarie Island region10.0 km2024-03-04 00:27:14 UTCView event →
M 4.7Macquarie Island region10.0 km2024-03-04 05:50:41 UTCView event →
M 4.5Macquarie Island region10.0 km2024-03-04 13:06:29 UTCView event →
M 6.1Macquarie Island region10.0 km2024-03-05 19:52:52 UTCView event →
M 4.6Macquarie Island region10.0 km2024-03-12 05:07:56 UTCView event →
M 5.9Macquarie Island region10.0 km2024-03-16 00:14:51 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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