4.6

M4.6 Earthquake near Banda SeaJuly 20, 2023

2023-07-20 18:10:17 UTC (2023-07-20) · approx. 3:10 AM UTC+9 local

MagnitudeM4.6(mb)
Time18:10 UTC3:10 AM UTC+9
Depth160.9 kmintermediate depth
Coordinates-6.810°, 129.726°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 20, 2023 at 18:10 UTC, a magnitude 4.6 intermediate depth earthquake struck near Banda Sea, at a depth of 160.9 km and coordinates -6.8104°, 129.7257°. This earthquake was detected by 29 seismic stations with good location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -6.81°, 129.73°

Earthquake Details

Magnitude
4.6 mb
Depth
160.9 km
intermediate depth
Location
-6.8104°N
129.7257°E

Technical Information

Event ID
us7000kh6q
Event Type
earthquake
Status
✓ Reviewed
Significance
326
Stations Used
29
Azimuthal Gap
93.0°
Min Station Distance
2.280°
RMS Residual
0.50 sec
Last Updated
2023-09-28 21:33:57 UTC

Common Questions

How strong was the magnitude 4.6 earthquake near Banda Sea?

The magnitude 4.6 earthquake that struck near Banda Sea on July 20, 2023 at 18:10 UTC had a depth of 160.9 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -6.8104°, 129.7257°, which is near Banda Sea.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000kh6q). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, July 20, 2023). M4.6 Earthquake near Banda SeaJuly 20, 2023. Retrieved September 28, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kh6q/