Data last collected:
QuakeFactsEvidence report · prepared 17 October 2026https://quakes99.com/entity/iscgem911591
USGS iscgem911591
2 Sept 1923, 03:46
5 km E of Tateyama, Japan
A magnitude 7.9 mw earthquake at 15 km depth.
Published location
Where is 5 km E of Tateyama, Japan?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
34.985000, 139.928000
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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
iscgem911591
Coordinates
34.985, 139.928
Network
iscgem
Significance
948
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Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right 5 km E of Tateyama, Japan earthquake: magnitude 7.9 and depth | QuakeFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.