Early-est:     Iran - Iraq Border Region    2025.12.09-17:16:11.93    q:B      mb:4.5    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1765300570417.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1765300570417.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1765300570417.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1765300570417.mech.fmamp_amp_mwp.thumb.jpg

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details:
Magnitude: mb: 4.5 [37]    Mwp: - [0]    Mwpd: - [0]
Region: Iran - Iraq Border Region
Origin Time: 2025.12.09-17:16:11.93 UTC
Hypocenter: lat: 34.44°  lon: 45.86°  [+/-15km]    depth: 10km  [+/-10km]
Location Quality: qualityCode:  B     stdErr: 1.7s   assocPhases: 72   usedPhases: 38
minDist: 1.6°   maxDist: 68.4°   AzGap: 112°   2ndAzGap: 151°   atten: -1.39 [+/-0.21]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 9km   maxHorUnc: 15km   azMaxHorUnc: 1°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 3°   majorAxisPlunge: 14°   semiIntermediateAxisLength: 11km   intermediateAxisAzimuth: 99°   intermediateAxisPlunge: 23°   semiMinorAxisLength: 8km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.4 [20]    Td: 0.6Xs [1]    Td*T50Ex: - [0]    To: 7.5s [7]
Closest plate boundaries:
   Arabia - Eurasia [continental convergent boundary]: distance: ~70km
   Eurasia - Arabia [continental transform fault]: distance: ~80km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 YES (70km)
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       10km
       10km
       10km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1765300570417.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 87°   dip: 5°   rake: 78°
Nodal Plane 2: strike: 279°   dip: 85°   rake: 91°
Quality: azimuthalGap: -1°   stationPolarityCount: 43   misfitWeightCount: 7.9   misfit: 0.14   stationDistributionRatio: 0.46   meanDistP: 24.3   meanDistT: 39.0   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1765300570417.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 219°   dip: 56°   rake: -180°
Nodal Plane 2: strike: 129°   dip: 90°   rake: -34°
Quality: azimuthalGap: 111°   stationPolarityCount: 43   misfit: 0.28   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 2.47   fracAcc30degPref: 1.00   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1765300570417.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: 0°
Nodal Plane 2: strike: 270°   dip: 90°   rake: 90°
Quality: azimuthalGap: -1°   stationPolarityCount: 0   misfitWeightCount: -1.0   misfit: -1.00   stationDistributionRatio: -1.00   meanDistP: -1.0   meanDistT: -1.0   qualityCode: X
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_amp_aref
./hypo.1765300570417.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: 0°
Nodal Plane 2: strike: 270°   dip: 90°   rake: 90°
Quality: azimuthalGap: -1°   stationPolarityCount: 0   misfitWeightCount: -1.0   misfit: -1.00   stationDistributionRatio: -1.00   meanDistP: -1.0   meanDistT: -1.0   qualityCode: X
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_amp_mwp
./hypo.1765300570417.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1765300570417
Event info last updated: 2025.12.09-18:17:05 UTC
Event first association/location: 2025.12.09-17:20:04 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI