4.0

M4.0 Earthquake in the Volcano Islands, Japan regionDecember 26, 2022

2022-12-26 23:57:40 UTC (2022-12-26) · approx. 9:57 AM UTC+10 local

MagnitudeM4.0(mb)
Time23:57 UTC9:57 AM UTC+10
Depth10.0 kmshallow crustal
Coordinates23.671°, 143.732°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 26, 2022 at 23:57 UTC, a magnitude 4.0 shallow crustal earthquake struck in the Volcano Islands, Japan region, at a depth of 10.0 km and coordinates 23.6707°, 143.7321°.

Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 23.67°, 143.73°

Earthquake Details

Magnitude
4.0 mb
Depth
10.0 km
shallow crustal
Location
23.6707°N
143.7321°E

Technical Information

Event ID
us7000j2l8
Event Type
earthquake
Status
✓ Reviewed
Significance
246
Stations Used
13
Azimuthal Gap
165.0°
Min Station Distance
3.686°
RMS Residual
0.77 sec
Last Updated
2023-03-07 19:00:06 UTC

Common Questions

How strong was the magnitude 4.0 earthquake in the Volcano Islands, Japan region?

The magnitude 4.0 earthquake that struck in the Volcano Islands, Japan region on December 26, 2022 at 23:57 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.0 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000j2l8). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, December 26, 2022). M4.0 Earthquake in the Volcano Islands, Japan regionDecember 26, 2022. Retrieved March 7, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000j2l8/