Early-est:     New Britain Region, P.N.G.    2025.11.12-10:46:39.53    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 [13]    Mwp: - [0]    Mwpd: - [0] Region: New Britain Region, P.N.G. Origin Time: 2025.11.12-10:46:39.53 UTC Hypocenter: lat: -6.41°  lon: 148.49°  [+/-15km]    depth: 20km  [+/-13km] Location Quality: qualityCode:  B     stdErr: 1.1s   assocPhases: 18   usedPhases: 15 minDist: 4.3°   maxDist: 120.6°   AzGap: 127°   2ndAzGap: 182°   atten: -1.20 [+/-0.51] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 15km   azMaxHorUnc: 81° 68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 261°   majorAxisPlunge: 2°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 354°   intermediateAxisPlunge: 46°   semiMinorAxisLength: 13km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.3 [10]    Td: 4.1Xs [1]    Td*T50Ex: - [0]    To: 1.5s [8] Closest plate boundaries:    South Bismarck - Woodlark [oceanic convergent boundary]: distance: ~110km    South Bismarck / Solomon Sea [subduction zone]: distance: ~110km    Solomon Sea \ Woodlark [subduction zone]: distance: ~110km Subduction geometry:    Zone: Solomon Islands    Slab depth at epicenter: 46km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (110km)  YES (110km)  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        20km        20km        20km Slab depth at epicenter:        46km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 57°   dip: 11°   rake: 21° Nodal Plane 2: strike: 306°   dip: 86°   rake: 100° Quality: azimuthalGap: -1°   stationPolarityCount: 13   misfitWeightCount: 4.8   misfit: 0.11   stationDistributionRatio: 0.27   meanDistP: 37.9   meanDistT: 35.0   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: 298°   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/1762944399065
Event info last updated: 2025.11.12-11:46:53 UTC
Event first association/location: 2025.11.12-10:53:41 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI