QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem882703
USGS iscgem882703
21 Aug 1959, 09:05
western Indian-Antarctic Ridge
A magnitude 6.1 mw earthquake at 15 km depth.
Published location
Where is western Indian-Antarctic Ridge?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-50.582000, 139.193000
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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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Catalog fields and provenance
Event ID
iscgem882703
Coordinates
-50.582, 139.193
Network
iscgem
Significance
565