Early-est:     Ionian Sea    2025.01.31-07:36:04.17    q:A      mb:4.3    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     hash:     fmamp_amp_aref:     fmamp_amp_mwp:

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

Earthquake Details: Magnitude: mb: 4.3 [4]    Mwp: - [0]    Mwpd: - [0] Region: Ionian Sea Origin Time: 2025.01.31-07:36:04.17 UTC Hypocenter: lat: 37.50°  lon: 20.56°  [+/-2km]    depth: 10km  [+/-2km] Location Quality: qualityCode:  A     stdErr: 0.9s   assocPhases: 22   usedPhases: 19 minDist: 1.1°   maxDist: 80.9°   AzGap: 132°   2ndAzGap: 157°   atten: -2.32 [+/-0.38] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 2km   maxHorUnc: 2km   azMaxHorUnc: 139° 68%ConfEllipsoid:   semiMajorAxisLength: 2km   majorAxisAzimuth: 317°   majorAxisPlunge: 11°   semiIntermediateAxisLength: 2km   intermediateAxisAzimuth: 226°   intermediateAxisPlunge: 6°   semiMinorAxisLength: 2km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 1.1X [3]    Td: 0.4Xs [1]    Td*T50Ex: - [0]    To: -s [0] Closest plate boundaries:    Aegean Sea - Eurasia [continental convergent boundary]: distance: ~40km    Eurasia / Africa [subduction zone]: distance: ~40km    Aegean Sea / Africa [subduction zone]: distance: ~40km    Eurasia - Africa [oceanic convergent boundary]: distance: ~70km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (40km)  YES (40km)  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        10km        10km        10km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 27°   dip: 24°   rake: -103° Nodal Plane 2: strike: 221°   dip: 67°   rake: -84° Quality: azimuthalGap: -1°   stationPolarityCount: 13   misfitWeightCount: 4.9   misfit: 0.10   stationDistributionRatio: 0.35   meanDistP: 47.7   meanDistT: 41.3   qualityCode: D Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (No solution available) Nodal Plane 1: strike: 999°   dip: 99°   rake: 999° Nodal Plane 2: strike: 324°   dip: 13°   rake: 135° Quality: azimuthalGap: 184°   stationPolarityCount: 13   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
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
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

Event ID: smi:KOERI/ee/event/1738308964090
Event info last updated: 2025.01.31-08:37:03 UTC
Event first association/location: 2025.01.31-07:37:31 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI