Early-est:     Kermadec Islands Region    2025.01.28-06:52:37.83    q:A      mb:5.3    Mwp:5.9    Mwpd:-    Td*T50Ex:1.7     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: 5.3 [65]    Mwp: 5.9 [16]    Mwpd: 6.1Xinv [9] Region: Kermadec Islands Region Origin Time: 2025.01.28-06:52:37.83 UTC Hypocenter: lat: -28.19°  lon: -176.06°  [+/-11km]    depth: 10km  [+/-8km] Location Quality: qualityCode:  A     stdErr: 1.8s   assocPhases: 178   usedPhases: 130 minDist: 2.0°   maxDist: 171.2°   AzGap: 106°   2ndAzGap: 112°   atten: -1.17 [+/-0.16] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 7km   maxHorUnc: 11km   azMaxHorUnc: 142° 68%ConfEllipsoid:   semiMajorAxisLength: 14km   majorAxisAzimuth: 322°   majorAxisPlunge: 2°   semiIntermediateAxisLength: 8km   intermediateAxisAzimuth: 232°   intermediateAxisPlunge: 8°   semiMinorAxisLength: 8km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [46]    Td: 4.1s [10]    Td*T50Ex: 1.7 [10]    To: 20.5s [33] Closest plate boundaries:    Kermadec / Pacific [subduction zone]: distance: ~20km Subduction geometry:    Zone: Kermadec-Tonga    Slab depth at epicenter: 12km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (20km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    1.7    1.7    1.7 Td*To:      84.0      84.0      84.0 Mwp magnitude:        5.9        5.9        5.9 Hypocenter depth:        10km        10km        10km Slab depth at epicenter:        12km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 101°   dip: 41°   rake: 31° Nodal Plane 2: strike: 347°   dip: 70°   rake: 127° Quality: azimuthalGap: -1°   stationPolarityCount: 121   misfitWeightCount: 18.0   misfit: 0.15   stationDistributionRatio: 0.48   meanDistP: 25.4   meanDistT: 32.8   qualityCode: C 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: 134°   dip: 26°   rake: 79° Nodal Plane 2: strike: 327°   dip: 64°   rake: 96° Quality: azimuthalGap: 105°   stationPolarityCount: 121   misfit: 0.36   stationDistributionRatio: 0.48   rmsAngDiffAccPref: 31.56   fracAcc30degPref: 0.69   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 102°   dip: 54°   rake: 8° Nodal Plane 2: strike: 7°   dip: 84°   rake: 144° Quality: azimuthalGap: -1°   stationPolarityCount: 19   misfitWeightCount: 4.9   misfit: 9999.90   stationDistributionRatio: 0.24   meanDistP: 34.1   meanDistT: 37.8   qualityCode: D 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/1738047156110
Event info last updated: 2025.01.28-07:52:48 UTC
Event first association/location: 2025.01.28-06:57:13 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI