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Systems
Event Specification

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Map Title

Magnitude
 4
Date & Time (UTC) 2025-09-10 16:15:28.9
Date & Time (Local) 1404/6/19  19:45:28.9
Location Lat:36.042 Lon: 53.361
Region Semnan Province, 28 km -East of Pol-E-Sefid
Nearest Cities
12 km East of Sangdeh, Mazandaran Province
19 km North of Chashem, Semnan Province
27 km South West of Kiasar, Mazandaran Province
28 km East of Shurmast-e peyrudbar, Mazandaran Province
28 km East of Pol-E-Sefid, Mazandaran Province
Depth 12 km
Agency
Faults within 150 km:
N_ALBORZ_F (Length: 360 km) , Distance to epicenter: 24 km 
ATARI_F (Length: 185 km) , Distance to epicenter: 35 km 
DAMGHAN_F (Length: 95 km) , Distance to epicenter: 44 km 
Number of Phases 10
RMS 0.5
Number of Stations 10
Error in Latitude >3.6 km
Error in Longitude 3.6 km
Error in Depth 693.6 km

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Amplitude

UIDAgencyStationComponentAmplitudePeriodArrival TimeProccessing TimeSignal Clip
199058IIEES SCNASNZ 0.312025-09-10 16:16:212025-09-13 06:42:00n
199059IIEES SCSHRTZ 0.112025-09-10 16:17:022025-09-13 06:42:00n
199060IIEES SCSRSLZ 0.0412025-09-10 16:17:052025-09-13 06:42:00n

Phase

AgencyStationComponentPhase TypePhase QualityFirst MotionObserved Arrival TimeTime ResidualLoc. FlagInput WeightDistanceAzimuth
IIEES SCDAMVZ EPg E2025-09-10 16:15:43-7.8n4134250
IIEES SCSHROZ EPn E2025-09-10 16:16:02-3.8n423991
IIEES SCNASNZ EPn E2025-09-10 16:16:21-0.5y0363188
IIEES SCTABSZ EPn E2025-09-10 16:16:310.7y0434128
IIEES SCKAGHZ EPn E2025-09-10 16:16:51-0.2y059980
IIEES SCSHRTZ EPn E2025-09-10 16:17:020.2y0687113
IIEES SCBSRNZ EPn E2025-09-10 16:16:49-13.9n4699130
IIEES SCSRSLZ EPn E2025-09-10 16:17:050.2y0714272
IIEES SCKRBRZ EPn E2025-09-10 16:17:08-0.7y0743155
IIEES SCGHIRZ EPn E2025-09-10 16:17:240.9y0861182