Early-est:     Taiwan    2025.01.30-02:11:57.86    q:A      mb:5.1    Mwp:5.5    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: 5.1 [96]    Mwp: 5.5 [4]    Mwpd: 5.9Xinv [2] Region: Taiwan Origin Time: 2025.01.30-02:11:57.86 UTC Hypocenter: lat: 23.08°  lon: 120.77°  [+/-8km]    depth: 33km  [+/-9km] Location Quality: qualityCode:  A     stdErr: 1.2s   assocPhases: 131   usedPhases: 115 minDist: 0.4°   maxDist: 176.3°   AzGap: 54°   2ndAzGap: 66°   atten: -1.30 [+/-0.12] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 7km   maxHorUnc: 8km   azMaxHorUnc: 48° 68%ConfEllipsoid:   semiMajorAxisLength: 10km   majorAxisAzimuth: 48°   majorAxisPlunge: 4°   semiIntermediateAxisLength: 9km   intermediateAxisAzimuth: 164°   intermediateAxisPlunge: 80°   semiMinorAxisLength: 8km Tsunamigeneic Assesment: Discriminants: Prob Underwater: <1% T50Ex: 0.4 [73]    Td: 3.0Xs [2]    Td*T50Ex: - [0]    To: 2.7s [64] Closest plate boundaries:    Philippine Sea - Yangtze [continental convergent boundary]: distance: ~40km    Yangtze - Sunda [continental convergent boundary]: distance: ~150km    Philippine Sea / Sunda [subduction zone]: distance: ~160km    Okinawa - Philippine Sea [continental transform fault]: distance: ~170km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (160km)  YES (40km)  no Prob underwater:  <1%  <1%  <1% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        5.5        5.5        5.5 Hypocenter depth:        33km        33km        33km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY): Nodal Plane 1: strike: 317°   dip: 43°   rake: -2° Nodal Plane 2: strike: 48°   dip: 89°   rake: -133° Quality: azimuthalGap: -1°   stationPolarityCount: 104   misfitWeightCount: 24.7   misfit: 0.21   stationDistributionRatio: 0.61   meanDistP: 22.3   meanDistT: 17.4   qualityCode: B Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 203°   dip: 47°   rake: 121° Nodal Plane 2: strike: 342°   dip: 51°   rake: 61° Quality: azimuthalGap: 54°   stationPolarityCount: 104   misfit: 0.37   stationDistributionRatio: 0.69   rmsAngDiffAccPref: 33.87   fracAcc30degPref: 0.70   qualityCode: C 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/1738203115913
Event info last updated: 2025.01.30-03:12:03 UTC
Event first association/location: 2025.01.30-02:14:01 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI