Early-est:     Fiji Islands Region    2025.02.02-12:31:50.65    q:B      mb:4.3    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1738499510664.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1738499510664.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1738499510664.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1738499510664.mech.fmamp_amp_mwp.thumb.jpg

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details:
Magnitude: mb: 4.3 [11]    Mwp: - [0]    Mwpd: - [0]
Region: Fiji Islands Region
Origin Time: 2025.02.02-12:31:50.65 UTC
Hypocenter: lat: -21.06°  lon: -178.48°  [+/-15km]    depth: 654km  [+/-17km]
Location Quality: qualityCode:  B     stdErr: 0.8s   assocPhases: 43   usedPhases: 13
minDist: 4.7°   maxDist: 147.3°   AzGap: 163°   2ndAzGap: 166°   atten: -1.28 [+/-0.28]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 15km   azMaxHorUnc: 72°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 71°   majorAxisPlunge: 32°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 305°   intermediateAxisPlunge: 43°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.0 [5]    Td: -s [0]    Td*T50Ex: - [0]    To: 0.7s [4]
Closest plate boundaries:
Subduction geometry:    Zone: Kermadec-Tonga    Slab depth at epicenter: 538km
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:
       654km
       654km
       654km
Slab depth at epicenter:
       538km
       -
       -
./hypo.1738499510664.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 38°   dip: 21°   rake: 153°
Nodal Plane 2: strike: 153°   dip: 81°   rake: 71°
Quality: azimuthalGap: -1°   stationPolarityCount: 15   misfitWeightCount: 6.5   misfit: 0.10   stationDistributionRatio: 0.54   meanDistP: 36.8   meanDistT: 36.5   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1738499510664.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 152°   dip: 85°   rake: 155°
Nodal Plane 2: strike: 244°   dip: 65°   rake: 5°
Quality: azimuthalGap: 106°   stationPolarityCount: 15   misfit: 0.23   stationDistributionRatio: 0.58   rmsAngDiffAccPref: 34.51   fracAcc30degPref: 0.64   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1738499510664.mech.hash.mechanism.jpg
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
./hypo.1738499510664.mech.fmamp_amp_aref.mechanism.jpg
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
./hypo.1738499510664.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1738499510664
Event info last updated: 2025.02.02-13:32:03 UTC
Event first association/location: 2025.02.02-12:45:07 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI