Early-est:     Off W. Coast of S. Island, N.Z.    2024.12.15-16:23:43.46    q:B      mb:4.5*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1734279823565.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734279823565.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734279823565.mech.hash.thumb.jpg

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

Earthquake Details:
Magnitude: mb: 4.5* [8]    Mwp: - [0]    Mwpd: - [0]
Region: Off W. Coast of S. Island, N.Z.
Origin Time: 2024.12.15-16:23:43.46 UTC
Hypocenter: lat: -47.16°  lon: 165.93°  [+/-10km]    depth: 9km  [+/-11km]
Location Quality: qualityCode:  B     stdErr: 1.4s   assocPhases: 13   usedPhases: 10
minDist: 3.9°   maxDist: 145.8°   AzGap: 150°   2ndAzGap: 216°   atten: -2.16 [+/-0.41]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 9km   maxHorUnc: 10km   azMaxHorUnc: 153°
68%ConfEllipsoid:   semiMajorAxisLength: 13km   majorAxisAzimuth: 184°   majorAxisPlunge: 40°   semiIntermediateAxisLength: 11km   intermediateAxisAzimuth: 292°   intermediateAxisPlunge: 20°   semiMinorAxisLength: 9km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [8]    Td: -s [0]    Td*T50Ex: - [0]    To: 14.7s [8]
Closest plate boundaries:
   Pacific / Australia [subduction zone]: distance: ~80km
   Australia \ Pacific [subduction zone]: distance: ~250km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (80km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       9km
       9km
       9km
Slab depth at epicenter:
       n/a
       -
       -
Tsunami and Rupture predictions (TEST!): No prediction: Event too small (Mwp<7.0) or too few Mwp readings (N<20)
./hypo.1734279823565.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 176°   dip: 27°   rake: -131°
Nodal Plane 2: strike: 40°   dip: 70°   rake: -71°
Quality: azimuthalGap: -1°   stationPolarityCount: 9   misfitWeightCount: 1.5   misfit: 0.07   stationDistributionRatio: 0.54   meanDistP: 52.7   meanDistT: 56.4   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734279823565.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (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/_polarity_waveform
./hypo.1734279823565.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 217°   dip: 28°   rake: -117°
Nodal Plane 2: strike: 67°   dip: 65°   rake: -77°
Quality: azimuthalGap: 149°   stationPolarityCount: 9   misfit: 0.36   stationDistributionRatio: 0.80   rmsAngDiffAccPref: 41.91   fracAcc30degPref: 0.42   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734279823565.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734279823565
Event info last updated: 2024.12.15-17:22:03 UTC
Event first association/location: 2024.12.15-16:28:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA