Early-est:     New Britain Region, P.N.G.    2026.10.06-08:45:27.95    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: 2026.10.06-08:45:27.95 UTC Hypocenter: lat: -4.13°  lon: 152.85°  [+/-14km]    depth: 48km  [+/-21km] Location Quality: qualityCode:  B     stdErr: 0.7s   assocPhases: 59   usedPhases: 18 minDist: 0.7°   maxDist: 120.0°   AzGap: 118°   2ndAzGap: 150°   atten: -1.57 [+/-0.51] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 14km   azMaxHorUnc: 74° 68%ConfEllipsoid:   semiMajorAxisLength: 22km   majorAxisAzimuth: 284°   majorAxisPlunge: 67°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 58°   intermediateAxisPlunge: 16°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: <1% T50Ex: 0.5 [12]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.8s [8] Closest plate boundaries:    North Bismarck - South Bismarck [continental transform fault]: distance: ~20km    Pacific - North Bismarck [oceanic convergent boundary]: distance: ~160km    South Bismarck / Solomon Sea [subduction zone]: distance: ~170km    North Bismarck - Manus [oceanic convergent boundary]: distance: ~180km Subduction geometry:    Zone: Solomon Islands    Slab depth at epicenter: 128km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (170km)  no  YES (20km) Prob underwater:  <1%  <1%  <1% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        48km        48km        48km Slab depth at epicenter:        128km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 20°   dip: 76°   rake: 168° Nodal Plane 2: strike: 113°   dip: 79°   rake: 14° Quality: azimuthalGap: -1°   stationPolarityCount: 17   misfitWeightCount: 3.5   misfit: 0.10   stationDistributionRatio: 0.57   meanDistP: 46.5   meanDistT: 43.1   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: 29°   dip: 76°   rake: -160° Nodal Plane 2: strike: 294°   dip: 71°   rake: -15° Quality: azimuthalGap: 133°   stationPolarityCount: 17   misfit: 0.22   stationDistributionRatio: 0.70   rmsAngDiffAccPref: 41.64   fracAcc30degPref: 0.44   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: 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/1791276328815
Event info last updated: 2026.10.06-09:45:29 UTC
Event first association/location: 2026.10.06-08:50:30 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI