Early-est:     Fiji Islands Region    2025.01.29-20:15:42.18    q:B      mb:4.4    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: 4.4 [15]    Mwp: - [0]    Mwpd: - [0] Region: Fiji Islands Region Origin Time: 2025.01.29-20:15:42.18 UTC Hypocenter: lat: -17.80°  lon: -178.70°  [+/-23km]    depth: 555km  [+/-17km] Location Quality: qualityCode:  B     stdErr: 0.6s   assocPhases: 44   usedPhases: 19 minDist: 3.1°   maxDist: 144.3°   AzGap: 133°   2ndAzGap: 222°   atten: -1.65 [+/-0.30] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 23km   azMaxHorUnc: 161° 68%ConfEllipsoid:   semiMajorAxisLength: 28km   majorAxisAzimuth: 341°   majorAxisPlunge: 12°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 101°   intermediateAxisPlunge: 67°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.1 [10]    Td: -s [0]    Td*T50Ex: - [0]    To: 0.9s [9] Closest plate boundaries: Subduction geometry:    Zone: Kermadec-Tonga    Slab depth at epicenter: 564km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  no  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        555km        555km        555km Slab depth at epicenter:        564km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 89°   dip: 48°   rake: 137° Nodal Plane 2: strike: 211°   dip: 59°   rake: 51° Quality: azimuthalGap: -1°   stationPolarityCount: 16   misfitWeightCount: 4.0   misfit: 0.06   stationDistributionRatio: 0.48   meanDistP: 41.4   meanDistT: 41.9   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: 88°   dip: 51°   rake: 148° Nodal Plane 2: strike: 199°   dip: 66°   rake: 43° Quality: azimuthalGap: 139°   stationPolarityCount: 16   misfit: 0.21   stationDistributionRatio: 0.53   rmsAngDiffAccPref: 40.78   fracAcc30degPref: 0.46   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/1738181742001
Event info last updated: 2025.01.29-21:15:49 UTC
Event first association/location: 2025.01.29-20:25:39 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI