Early-est:     Solomon Islands    2025.01.27-01:56:46.65    q:B      mb:4.2    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: 4.2 [14]    Mwp: - [0]    Mwpd: - [0] Region: Solomon Islands Origin Time: 2025.01.27-01:56:46.65 UTC Hypocenter: lat: -9.26°  lon: 160.32°  [+/-15km]    depth: 255km  [+/-28km] Location Quality: qualityCode:  B     stdErr: 1.6s   assocPhases: 52   usedPhases: 17 minDist: 9.1°   maxDist: 147.0°   AzGap: 84°   2ndAzGap: 158°   atten: -1.42 [+/-0.39] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 15km   azMaxHorUnc: 169° 68%ConfEllipsoid:   semiMajorAxisLength: 29km   majorAxisAzimuth: 169°   majorAxisPlunge: 71°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 350°   intermediateAxisPlunge: 19°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.0 [5]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.7Xs [3] Closest plate boundaries:    Pacific / Australia [subduction zone]: distance: ~120km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (120km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        255km        255km        255km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 106°   dip: 25°   rake: -143° Nodal Plane 2: strike: 341°   dip: 75°   rake: -70° Quality: azimuthalGap: -1°   stationPolarityCount: 18   misfitWeightCount: 6.6   misfit: 0.08   stationDistributionRatio: 0.41   meanDistP: 43.1   meanDistT: 30.5   qualityCode: D 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: 98°   dip: 25°   rake: -161° Nodal Plane 2: strike: 350°   dip: 82°   rake: -66° Quality: azimuthalGap: 83°   stationPolarityCount: 18   misfit: 0.10   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 36.40   fracAcc30degPref: 0.52   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/1737942996768
Event info last updated: 2025.01.27-02:56:48 UTC
Event first association/location: 2025.01.27-02:02:02 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI