QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem731814
USGS iscgem731814
30 Mar 1975, 23:32
Bouvet Island region
A magnitude 6.4 mw earthquake at 18.9 km depth.
Published location
Where is Bouvet Island region?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-54.211000, 8.393000
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
iscgem731814
Coordinates
-54.211, 8.393
Network
iscgem
Significance
622