Early-est:     Caspian Sea    2025.12.11-00:31:56.30    q:B      mb:4.1    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1765413113693.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1765413113693.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1765413113693.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1765413113693.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: 4.1 [9]    Mwp: - [0]    Mwpd: - [0]
Region: Caspian Sea
Origin Time: 2025.12.11-00:31:56.30 UTC
Hypocenter: lat: 40.14°  lon: 51.85°  [+/-23km]    depth: 20km  [+/-14km]
Location Quality: qualityCode:  B     stdErr: 1.8s   assocPhases: 21   usedPhases: 16
minDist: 5.3°   maxDist: 140.5°   AzGap: 100°   2ndAzGap: 142°   atten: -1.39 [+/-0.66]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 23km   azMaxHorUnc: 36°
68%ConfEllipsoid:   semiMajorAxisLength: 29km   majorAxisAzimuth: 216°   majorAxisPlunge: 0°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 306°   intermediateAxisPlunge: 5°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.5 [10]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.8s [4]
Closest plate boundaries:
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 no
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       20km
       20km
       20km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1765413113693.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 14°   dip: 21°   rake: -30°
Nodal Plane 2: strike: 132°   dip: 80°   rake: -108°
Quality: azimuthalGap: -1°   stationPolarityCount: 12   misfitWeightCount: 4.1   misfit: 0.07   stationDistributionRatio: 0.61   meanDistP: 33.9   meanDistT: 43.8   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1765413113693.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 358°   dip: 17°   rake: -22°
Nodal Plane 2: strike: 109°   dip: 84°   rake: -106°
Quality: azimuthalGap: 142°   stationPolarityCount: 12   misfit: 0.15   stationDistributionRatio: 0.57   rmsAngDiffAccPref: 37.40   fracAcc30degPref: 0.53   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1765413113693.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: nan°
Nodal Plane 2: strike: nan°   dip: nan°   rake: nan°
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.1765413113693.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: nan°
Nodal Plane 2: strike: nan°   dip: nan°   rake: nan°
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.1765413113693.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1765413113693
Event info last updated: 2025.12.11-01:32:02 UTC
Event first association/location: 2025.12.11-00:37:37 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI