Early-est:     New Britain Region, P.N.G.    2026.10.13-14:36:12.77    q:B      mb:4.8    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: 4.8 [29]    Mwp: 5.2X [1]    Mwpd: - [0] Region: New Britain Region, P.N.G. Origin Time: 2026.10.13-14:36:12.77 UTC Hypocenter: lat: -5.48°  lon: 152.24°  [+/-20km]    depth: 16km  [+/-33km] Location Quality: qualityCode:  B     stdErr: 2.0s   assocPhases: 62   usedPhases: 32 minDist: 1.3°   maxDist: 145.0°   AzGap: 69°   2ndAzGap: 107°   atten: -0.88 [+/-0.21] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 20km   azMaxHorUnc: 89° 68%ConfEllipsoid:   semiMajorAxisLength: 34km   majorAxisAzimuth: 72°   majorAxisPlunge: 67°   semiIntermediateAxisLength: 23km   intermediateAxisAzimuth: 278°   intermediateAxisPlunge: 21°   semiMinorAxisLength: 17km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.6 [19]    Td: 1.1Xs [3]    Td*T50Ex: - [0]    To: 17.0s [14] Closest plate boundaries:    South Bismarck / Solomon Sea [subduction zone]: distance: ~30km    North Bismarck - South Bismarck [continental transform fault]: distance: ~120km    North Bismarck / Solomon Sea [subduction zone]: distance: ~210km Subduction geometry:    Zone: Solomon Islands    Slab depth at epicenter: 14km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (30km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        16km        16km        16km Slab depth at epicenter:        14km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY): Nodal Plane 1: strike: 32°   dip: 20°   rake: -30° Nodal Plane 2: strike: 150°   dip: 80°   rake: -108° Quality: azimuthalGap: -1°   stationPolarityCount: 28   misfitWeightCount: 8.5   misfit: 0.08   stationDistributionRatio: 0.36   meanDistP: 21.3   meanDistT: 23.4   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: 127°   dip: 60°   rake: -104° Nodal Plane 2: strike: 333°   dip: 32°   rake: -68° Quality: azimuthalGap: 72°   stationPolarityCount: 28   misfit: 0.18   stationDistributionRatio: 0.73   rmsAngDiffAccPref: 35.71   fracAcc30degPref: 0.56   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/1791902174865
Event info last updated: 2026.10.13-15:36:39 UTC
Event first association/location: 2026.10.13-14:41:01 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI