Event Specification
Magnitude |
3.1 |
| Date & Time (UTC) | 2025-08-04 21:00:58.8 |
| Date & Time (Local) | 1404/5/14 00:30:58.8 |
| Location | Lat:36.621 Lon: 54.801 |
| Region | Golestan Province, 32 km South of Ali Abad |
Nearest Cities |
|
| 21 km North East of Majen, Semnan Province | |
| 24 km North West of Bastam, Semnan Province | |
| 27 km North West of Shahrud, Semnan Province | |
| 27 km West of Qaleh-ye nokharqan, Semnan Province | |
| 32 km North East of Cheharbagh, Golestan Province | |
| Depth | 8 km |
| Agency | |
Faults within 150 km: |
|
| SHAVAR_F (Length: 87 km) , Distance to epicenter: 8 km | |
| ASTANEH_F (Length: 72 km) , Distance to epicenter: 23 km | |
| N_ALBORZ_F (Length: 360 km) , Distance to epicenter: 36 km | |
| Number of Phases | 10 |
| RMS | 0.2 |
| Number of Stations | 10 |
| Error in Latitude | >2.8 km |
| Error in Longitude | 2.8 km |
| Error in Depth | 3.8 km |
Download waveform in seisan format
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Amplitude | ||||||||
| UID | Agency | Station | Component | Amplitude | Period | Arrival Time | Proccessing Time | Signal Clip |
| 198792 | IIEES SC | GHVR | Z | 0.06 | 1 | 2025-08-04 21:01:57 | 2025-08-09 07:30:00 | n |
| 198793 | IIEES SC | NASN | Z | 0.02 | 1 | 2025-08-04 21:02:05 | 2025-08-09 07:30:00 | n |
| 198794 | IIEES SC | SHRT | Z | 0.01 | 1 | 2025-08-04 21:02:21 | 2025-08-09 07:30:00 | n |
Phase | ||||||||||||
| Agency | Station | Component | Phase Type | Phase Quality | First Motion | Observed Arrival Time | Time Residual | Loc. Flag | Input Weight | Distance | Azimuth | |
| IIEES SC | ABGH | Z | EPg | E | 2025-08-04 21:01:01 | -0.1 | y | 0 | 13 | 359 | ||
| IIEES SC | SHRO | Z | EPg | E | 2025-08-04 21:00:54 | -26.4 | n | 4 | 128 | 122 | ||
| IIEES SC | DAMV | Z | EPn | E | 2025-08-04 21:01:12 | -29.7 | n | 4 | 277 | 247 | ||
| IIEES SC | TABS | Z | EPn | E | 2025-08-04 21:01:55 | -0.1 | y | 0 | 392 | 147 | ||
| IIEES SC | GHVR | Z | EPn | E | 2025-08-04 21:01:57 | 0.1 | y | 0 | 400 | 234 | ||
| IIEES SC | NASN | Z | EPn | E | 2025-08-04 21:02:05 | 1.1 | y | 0 | 462 | 203 | ||
| IIEES SC | KAGH | Z | EPn | E | 2025-08-04 21:02:04 | 0.1 | y | 0 | 462 | 86 | ||
| IIEES SC | YZKH | Z | EPn | E | 2025-08-04 21:02:04 | -0.9 | y | 0 | 470 | 182 | ||
| IIEES SC | SHRT | Z | EPn | E | 2025-08-04 21:02:21 | 0.1 | y | 0 | 599 | 123 | ||
| IIEES SC | BSRN | Z | EPn | E | 2025-08-04 21:02:17 | -11.3 | n | 4 | 652 | 142 | ||
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