Early-est:     Eastern New Guinea Reg., P.N.G.    2025.12.09-03:33:16.69    q:C      mb:4.5    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: 4.5 [17]    Mwp: - [0]    Mwpd: - [0] Region: Eastern New Guinea Reg., P.N.G. Origin Time: 2025.12.09-03:33:16.69 UTC Hypocenter: lat: -6.35°  lon: 147.34°  [+/-15km]    depth: 71km  [+/-29km] Location Quality: qualityCode:  C     stdErr: 1.1s   assocPhases: 51   usedPhases: 20 minDist: 3.1°   maxDist: 152.4°   AzGap: 127°   2ndAzGap: 204°   atten: -0.36 [+/-0.22] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 15km   azMaxHorUnc: 122° 68%ConfEllipsoid:   semiMajorAxisLength: 30km   majorAxisAzimuth: 127°   majorAxisPlunge: 68°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 285°   intermediateAxisPlunge: 20°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: <1% T50Ex: 0.5 [11]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.9s [7] Closest plate boundaries:    South Bismarck - Woodlark [continental convergent boundary]: distance: ~60km    South Bismarck / Solomon Sea [subduction zone]: distance: ~180km    Solomon Sea \ Woodlark [subduction zone]: distance: ~180km Subduction geometry:    Zone: Solomon Islands    Slab depth at epicenter: 30km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (180km)  YES (60km)  no Prob underwater:  <1%  <1%  <1% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        71km        71km        71km Slab depth at epicenter:        30km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 151°   dip: 15°   rake: -153° Nodal Plane 2: strike: 35°   dip: 83°   rake: -77° Quality: azimuthalGap: -1°   stationPolarityCount: 18   misfitWeightCount: 7.1   misfit: 0.09   stationDistributionRatio: 0.34   meanDistP: 28.4   meanDistT: 41.1   qualityCode: C 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: 187°   dip: 18°   rake: -117° Nodal Plane 2: strike: 35°   dip: 74°   rake: -81° Quality: azimuthalGap: 113°   stationPolarityCount: 18   misfit: 0.34   stationDistributionRatio: 0.76   rmsAngDiffAccPref: 31.03   fracAcc30degPref: 0.69   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: 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
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

Event ID: smi:KOERI/ee/event/1765251192575
Event info last updated: 2025.12.09-04:33:44 UTC
Event first association/location: 2025.12.09-03:42:36 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI