Early-est:     Southeast of Loyalty Islands    2025.02.01-12:43:27.64    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 [17]    Mwp: - [0]    Mwpd: - [0] Region: Southeast of Loyalty Islands Origin Time: 2025.02.01-12:43:27.64 UTC Hypocenter: lat: -23.04°  lon: 171.57°  [+/-14km]    depth: 10km  [+/-14km] Location Quality: qualityCode:  B     stdErr: 2.5s   assocPhases: 52   usedPhases: 29 minDist: 4.8°   maxDist: 151.6°   AzGap: 122°   2ndAzGap: 131°   atten: -1.30 [+/-0.17] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 14km   azMaxHorUnc: 14° 68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 195°   majorAxisPlunge: 9°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 286°   intermediateAxisPlunge: 4°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [15]    Td: -s [0]    Td*T50Ex: - [0]    To: 18.3s [7] Closest plate boundaries:    New Hebrides / Australia [subduction zone]: distance: ~10km    New Hebrides - Australia [oceanic transform fault]: distance: ~90km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (10km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        10km        10km        10km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 109°   dip: 18°   rake: 86° Nodal Plane 2: strike: 293°   dip: 72°   rake: 91° Quality: azimuthalGap: -1°   stationPolarityCount: 24   misfitWeightCount: 5.8   misfit: 0.10   stationDistributionRatio: 0.36   meanDistP: 35.2   meanDistT: 32.1   qualityCode: C 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: 215°   dip: 71°   rake: 179° Nodal Plane 2: strike: 305°   dip: 89°   rake: 19° Quality: azimuthalGap: 122°   stationPolarityCount: 24   misfit: 0.25   stationDistributionRatio: 0.51   rmsAngDiffAccPref: 23.91   fracAcc30degPref: 0.94   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/1738413808281
Event info last updated: 2025.02.01-13:43:31 UTC
Event first association/location: 2025.02.01-12:50:02 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI