Early-est:     Off E. Coast of S. Island, N.Z.    2025.02.01-09:26:43.22    q:B      mb:4.5    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: 4.5 [8]    Mwp: 4.7X [1]    Mwpd: - [0] Region: Off E. Coast of S. Island, N.Z. Origin Time: 2025.02.01-09:26:43.22 UTC Hypocenter: lat: -42.26°  lon: 175.01°  [+/-19km]    depth: 10km  [+/-15km] Location Quality: qualityCode:  B     stdErr: 1.5s   assocPhases: 43   usedPhases: 19 minDist: 1.0°   maxDist: 159.5°   AzGap: 113°   2ndAzGap: 176°   atten: -1.41 [+/-0.28] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 19km   azMaxHorUnc: 114° 68%ConfEllipsoid:   semiMajorAxisLength: 24km   majorAxisAzimuth: 295°   majorAxisPlunge: 8°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 26°   intermediateAxisPlunge: 10°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [5]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.3s [4] Closest plate boundaries:    Australia - Pacific [continental transform fault]: distance: ~20km    Kermadec - Australia [continental convergent boundary]: distance: ~50km    Kermadec / Pacific [subduction zone]: distance: ~50km    Australia \ Pacific [subduction zone]: distance: ~540km    Pacific / Australia [subduction zone]: distance: ~710km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (50km)  YES (50km)  YES (20km) 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: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 51°   dip: 16°   rake: 157° Nodal Plane 2: strike: 163°   dip: 84°   rake: 75° Quality: azimuthalGap: -1°   stationPolarityCount: 21   misfitWeightCount: 6.6   misfit: 0.12   stationDistributionRatio: 0.58   meanDistP: 33.7   meanDistT: 39.9   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: 19°   dip: 63°   rake: 144° Nodal Plane 2: strike: 128°   dip: 59°   rake: 33° Quality: azimuthalGap: 91°   stationPolarityCount: 21   misfit: 0.35   stationDistributionRatio: 0.49   rmsAngDiffAccPref: 37.55   fracAcc30degPref: 0.69   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: 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/1738402003218
Event info last updated: 2025.02.01-10:27:02 UTC
Event first association/location: 2025.02.01-10:18:49 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI