The red marker on the map shows the epicenter of the earthquake, which was located in Tajikistan, at a depth of 10 km, 157 km E-NE of Dushanbe, the capital of Tajikistan, 170 km N-NW of Khorog and 287 km S-SE of Tashkent, the capital of Uzbekistan.
|
Time in origin (GMT) |
Latitude, degree |
Longitude, degree |
Depth, km |
Stations number |
Ms/N |
mb/N |
I0 (calculated) |
GAP |
Center |
| 1
|
04:24:01.0
|
38.9 |
70.67 |
10.0 |
60
|
5.9/35 |
6.1/39 |
8-8.5 |
77
|
GS RAS(Verified) Federal research center, Geophysical survey of Russian Academy of Sciences
|
|
2
|
04:24:00.6
|
39.09 |
70.78 |
10.0 |
25
|
|
6.1/24 |
8-8.5 |
|
GS RAS(Preliminary) Federal research center, Geophysical survey of Russian Academy of Sciences
|
|
3
|
04:24:01.9
|
38.99 |
70.71 |
10.0 |
569
|
Mw 5.8 |
5.9 |
|
23
|
CSEM European - Mediterranean seismological center
|
|
4
|
04:24:01.9
|
39.01 |
70.66 |
12.6 |
123
|
Mw 5.8 |
5.9/302 |
|
33
|
NEIC National Earthquakes Information Center of US Geological Service
|
Fig. 1 presents fragments of records obtained from digital stations Jizzakh (∆ 2.6º), Ala-Archa (∆ 4.7º), Kurchatov (∆ 13.1º), Borovoe (∆ 14.2º), Zalesovo (∆ 17.9º). Fig. 2 presents fragments of records obtained from digital stations Novosibirsk (∆ 18.1º), Arti (∆ 19.3º), Nalchik (∆ 20.8º), Kislovodsk (∆ 21.5º), Zakamensk (∆ 25.7º).
Image 1
Image 2
GS RAS registered five aftershocks with М>=4.2 within a day after the main shock. The aftershock at 05:06 was felt in Dushanbe with a magnitude of 3, in Tashkent with a magnitude of 2, the aftershock at 14:34 was felt in Dushanbe with a magnitude of 2-3.
| N |
Time in origin (GMT) |
Latitude, degree |
Longitude, degree |
Depth, km |
Stations number |
Ms/N |
mb/N |
I0 (calculated) |
Region |
| 20251888
|
13/04/2025 05:06:08.0.0 |
38.88 |
70.79 |
10.0 |
17 |
|
4.2/8 |
3.5 |
Afghanistan-Tajikistan bord reg.
|
| 20251891
|
13/04/2025 07:14:19.0.0 |
39.07 |
70.71 |
10.0 |
32 |
|
4.7/12 |
4.5-5 |
Tajikistan
|
| 20251896
|
13/04/2025 14:34:29.0.0 |
39.17 |
70.65 |
10.0 |
41 |
|
5.0/24 |
5-5.5 |
Tajikistan
|
| 20251901
|
13/04/2025 17:11:49.0.0 |
39.35 |
70.58 |
10.0 |
14 |
|
4.2/4 |
3.5 |
Tajikistan
|
| 20251908
|
14/04/2025 00:44:59.0.0 |
39.17 |
70.57 |
10.0 |
28 |
|
4.7/10 |
4.5-5 |
Tajikistan
|
Focal mechanism solution of the origin was calculated by GS RAS with signs of initial arrivals of P waves at 86 stations, including 43 stations which registered compression waves (plus signs), and 43 stations which registered tensile waves (minus signs). The stations are located in the interval of epicentral distances 2.6-91.9º and in azimuth sector Az=11-359º. Focal mechanism solution in stereographic projection on the lower hemisphere and elements of the mechanism are presented in the table. The table also contains focal mechanism solutions obtained at the USGS NEIC with WW-phase Moment Tensor (Mww) technique and in Lamont-Dohert Earth Observatory of Columbia University, USA (LDEO GCMT) with СМТ (Centroid moment tensor) technique. Solutions from different centers are close. The earthquake was caused by prevalence of compression stresses oriented NW (AZ=323º) according to GS RAS and N-NW (AZ=333-335º) according to USGS NEIC and LDEO GCMT. One nodal plane NP1 strikes SW (STK=225-237º), another one NP2 strikes E-NE (STK=65º-81º). NP2 is dipping more horizontally (DP=32-46º) if compared with NP1 (DP=49-59º). The type of motion along NP1 – reverse fault, along NP2 – reverse fault with right lateral slip component. The seismic moment according to USGS NEIC makes Mo=7.439 *10**17 N*m, Mww=5.85. According to LDEO GCMT it makes Mo=9.29*10**17 N*m, Mw=5.9.
| Axes of main strengths |
Nodal planes |
Center |
|
| T |
P |
N |
NP1 |
NP2 |
PI: 74
Azm: 105
|
PI: 12
Azm: 323
|
PI: 9
Azm: 231
|
Stk: 225
Dp: 58
Slip: 79
|
Stk: 65
Dp: 34
Slip: 107
|
GS RAS Federal research center, Geophysical survey of Russian Academy of Sciences
|
|
PI: 73
Azm: 70
|
PI: 2
Azm: 335
|
PI: 16
Azm: 244
|
Stk: 229
Dp: 49
Slip: 68
|
Stk: 81
Dp: 46
Slip: 113
|
NEIC National Earthquakes Information Center of US Geological Service
|
|
PI: 75
Azm: 126
|
PI: 14
Azm: 333
|
PI: 7
Azm: 241
|
Stk: 237
Dp: 59
Slip: 82
|
Stk: 72
Dp: 32
Slip: 103
|
GCMT Lamont-Doherty Earth Observatory Global CMT Columbia University, USA
|
|