M6.1 earthquake 35 km WNW of Dongning, China
A magnitude 6.1 earthquake struck 35 km WNW of Dongning, China on Sat, Oct 8, 1983, 3:45 PM GMT+8 (07:45 UTC), 558 km (347 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.1 (Mw, moment), strong
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1983-10-08 07:45:26 UTC
- Depth
- 557.9 km (346.7 mi), deep
- Epicenter
- 44.229° N, 130.741° E
- Region
- China
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 6.1 | Mw, moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 6.09 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 6.1 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
[FS]. FAULT PLANE SOLUTION: P-WAVES NP1:STRIKE=175;DIP=67;SLIP=122 NP2:STRIKE=297;DIP=39;SLIP=39 PRINCIPAL AXES: (T) PLG=56; AZM=127 (P) PLG=16; AZM=242 COMMENT: The focal mechanism is moderately well controlled and corresponds to reverse faulting with a large strike-slip component. The preferred fault plane is not determined. MOMENT TENSOR SOLUTION NO OF STA 13 SCALE 10**25 D-CM DEPTH 557 PRINCIPAL AXES: (T) VAL=1.77; PLG=56; AZM=73 (N) VAL=0.04; PLG=18; AZM=192 (P) VAL=-1.81; PLG=28; AZM=292 BEST DOUBLE COUPLE:Mo=1.8*10**25 NP1:STRIKE=60;DIP=24;SLIP=140 NP2:STRIKE=187;DIP=75;SLIP=71 CENTROID, MOMENT TENSOR SOLUTION HARVARD EVENT-FILE NAME B100883A DATA USED: GDSN L.P. BODY WAVES: 21S, 52C, T=45 CENTROID LOCATION: ORIGIN TIME 7:45:31.3 0.2 LAT 44.18N 0.02;LON 130.39E 0.04 DEP 572.8 1.4;HALF-DURATION 4.2 MOMENT TENSOR; SCALE 10**25 D-CM MRR=1.40 0.03; MTT=-0.23 0.03 MFF=-1.17 0.04; MRT=0.18 0.05 MRF=-1.09 0.04; MTF=0.15 0.04 PRINCIPAL AXES: 1.(T) VAL=1.80;PLG=70;AZM=80 2.(N) -0.20; 0; 171 3.(P) -1.60; 20; 261 BEST DOUBLE COUPLE:M0=1.7*10**25 NP1:STRIKE=351;DIP=25;SLIP=90 NP2:Strike=171;Dip=65;Slip=90
From the USGS event page for usp0001yv8. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 3.1 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001yv8 (also filed as gcmtb100883a, gcmt19831008074526, iscgem566245). Read Sun, Oct 4, 2026, 7:59 AM UTC.