Early-est:     Eastern New Guinea Reg., P.N.G.    2025.12.11-20:56:24.57    q:B      mb:4.7    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: 4.7 [30]    Mwp: - [0]    Mwpd: - [0] Region: Eastern New Guinea Reg., P.N.G. Origin Time: 2025.12.11-20:56:24.57 UTC Hypocenter: lat: -7.03°  lon: 148.44°  [+/-15km]    depth: 31km  [+/-19km] Location Quality: qualityCode:  B     stdErr: 0.9s   assocPhases: 73   usedPhases: 32 minDist: 2.7°   maxDist: 84.1°   AzGap: 120°   2ndAzGap: 184°   atten: -1.26 [+/-0.19] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 15km   azMaxHorUnc: 91° 68%ConfEllipsoid:   semiMajorAxisLength: 20km   majorAxisAzimuth: 270°   majorAxisPlunge: 52°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 92°   intermediateAxisPlunge: 38°   semiMinorAxisLength: 13km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [20]    Td: 1.5Xs [1]    Td*T50Ex: - [0]    To: 2.3s [13] Closest plate boundaries:    South Bismarck - Woodlark [oceanic convergent boundary]: distance: ~40km    South Bismarck / Solomon Sea [subduction zone]: distance: ~40km    Solomon Sea \ Woodlark [subduction zone]: distance: ~40km Subduction geometry:    Zone: Solomon Islands    Slab depth at epicenter: 13km 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:        31km        31km        31km Slab depth at epicenter:        13km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 331°   dip: 41°   rake: -73° Nodal Plane 2: strike: 130°   dip: 52°   rake: -104° Quality: azimuthalGap: -1°   stationPolarityCount: 28   misfitWeightCount: 6.4   misfit: 0.21   stationDistributionRatio: 0.33   meanDistP: 42.7   meanDistT: 50.9   qualityCode: D Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 199°   dip: 83°   rake: -138° Nodal Plane 2: strike: 103°   dip: 49°   rake: -9° Quality: azimuthalGap: 115°   stationPolarityCount: 28   misfit: 0.33   stationDistributionRatio: 0.72   rmsAngDiffAccPref: 39.89   fracAcc30degPref: 0.63   qualityCode: D 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/1765486586159
Event info last updated: 2025.12.11-21:56:32 UTC
Event first association/location: 2025.12.11-21:02:21 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI