4.7

M4.7 Earthquake near western Indian-Antarctic Ridge — July 14, 2020

2020-07-14 09:41:53 UTC (2020-07-14) · approx. 5:41 PM UTC+8 local

MagnitudeM4.7(mb)
Time09:41 UTC≈ 5:41 PM UTC+8
Depth10.0 kmshallow crustal
Coordinates-49.614°, 121.645°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 14, 2020 at 09:41 UTC, a magnitude 4.7 shallow crustal earthquake struck near western Indian-Antarctic Ridge, at a depth of 10.0 km and coordinates -49.6136°, 121.6451°.

Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -49.61°, 121.65°

Earthquake Details

Magnitude
4.7 mb
Depth
10.0 km
shallow crustal
Location
-49.6136°N
121.6451°E

Technical Information

Event ID
us7000ash5
Event Type
earthquake
Status
✓ Reviewed
Significance
340
Azimuthal Gap
138.0°
Min Station Distance
17.670°
RMS Residual
0.96 sec
Last Updated
2020-09-19 20:58:34 UTC

Common Questions

How strong was the magnitude 4.7 earthquake near western Indian-Antarctic Ridge?

The magnitude 4.7 earthquake that struck near western Indian-Antarctic Ridge on July 14, 2020 at 09:41 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -49.6136°, 121.6451°, which is near western Indian-Antarctic Ridge.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000ash5). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, July 14, 2020). M4.7 Earthquake near western Indian-Antarctic Ridge — July 14, 2020. Retrieved September 19, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000ash5/