Early-est:     Solomon Islands    2025.12.10-13:30:17.15    q:A      mb:5.0    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: 5.0 [58]    Mwp: 4.4X [1]    Mwpd: - [0] Region: Solomon Islands Origin Time: 2025.12.10-13:30:17.15 UTC Hypocenter: lat: -6.38°  lon: 154.95°  [+/-12km]    depth: 91km  [+/-14km] Location Quality: qualityCode:  A     stdErr: 1.0s   assocPhases: 111   usedPhases: 67 minDist: 3.5°   maxDist: 150.2°   AzGap: 52°   2ndAzGap: 58°   atten: -1.07 [+/-0.16] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 10km   maxHorUnc: 12km   azMaxHorUnc: 179° 68%ConfEllipsoid:   semiMajorAxisLength: 15km   majorAxisAzimuth: 344°   majorAxisPlunge: 41°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 202°   intermediateAxisPlunge: 42°   semiMinorAxisLength: 13km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.3 [31]    Td: 1.0Xs [3]    Td*T50Ex: - [0]    To: 1.5s [25] Closest plate boundaries:    Pacific - North Bismarck [continental transform fault]: distance: ~50km    North Bismarck / Solomon Sea [subduction zone]: distance: ~70km    Pacific / Solomon Sea [subduction zone]: distance: ~100km    North Bismarck - South Bismarck [oceanic transform fault]: distance: ~110km    South Bismarck / Solomon Sea [subduction zone]: distance: ~110km Subduction geometry:    Zone: Solomon Islands    Slab depth at epicenter: 37km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (70km)  no  YES (50km) Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        91km        91km        91km Slab depth at epicenter:        37km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 73°   dip: 16°   rake: -137° Nodal Plane 2: strike: 302°   dip: 79°   rake: -78° Quality: azimuthalGap: -1°   stationPolarityCount: 62   misfitWeightCount: 23.0   misfit: 0.28   stationDistributionRatio: 0.58   meanDistP: 35.1   meanDistT: 42.2   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: 334°   dip: 42°   rake: -105° Nodal Plane 2: strike: 174°   dip: 50°   rake: -77° Quality: azimuthalGap: 51°   stationPolarityCount: 62   misfit: 0.44   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 41.12   fracAcc30degPref: 0.50   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/1765373419261
Event info last updated: 2025.12.10-14:30:37 UTC
Event first association/location: 2025.12.10-13:35:16 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI