Early-est:     Off E. Coast of N. Island, N.Z.    2024.12.16-22:18:37.67    q:B      mb:4.0*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1734387519194.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734387519194.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734387519194.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: 4.0* [8]    Mwp: - [0]    Mwpd: - [0]
Region: Off E. Coast of N. Island, N.Z.
Origin Time: 2024.12.16-22:18:37.67 UTC
Hypocenter: lat: -36.95°  lon: 176.78°  [+/-8km]    depth: 273km  [+/-7km]
Location Quality: qualityCode:  B     stdErr: 1.5s   assocPhases: 29   usedPhases: 16
minDist: 2.2°   maxDist: 169.8°   AzGap: 201°   2ndAzGap: 211°   atten: -1.60 [+/-0.35]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 5km   maxHorUnc: 8km   azMaxHorUnc: 75°
68%ConfEllipsoid:   semiMajorAxisLength: 10km   majorAxisAzimuth: 78°   majorAxisPlunge: 23°   semiIntermediateAxisLength: 7km   intermediateAxisAzimuth: 195°   intermediateAxisPlunge: 48°   semiMinorAxisLength: 6km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.1 [5]    Td: 0.3Xs [1]    Td*T50Ex: - [0]    To: 3.6s [5]
Closest plate boundaries:
   Kermadec - Australia [continental rift boundary]: distance: ~30km
   Kermadec / Pacific [subduction zone]: distance: ~280km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (280km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       273km
       273km
       273km
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.1734387519194.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 67°   dip: 39°   rake: 162°
Nodal Plane 2: strike: 171°   dip: 79°   rake: 53°
Quality: azimuthalGap: -1°   stationPolarityCount: 10   misfitWeightCount: 5.1   misfit: 0.00   stationDistributionRatio: 0.43   meanDistP: 44.7   meanDistT: 43.6   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734387519194.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.1734387519194.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 76°   dip: 68°   rake: -176°
Nodal Plane 2: strike: 344°   dip: 86°   rake: -22°
Quality: azimuthalGap: 136°   stationPolarityCount: 10   misfit: 0.11   stationDistributionRatio: 0.69   rmsAngDiffAccPref: 40.06   fracAcc30degPref: 0.46   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734387519194.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734387519194
Event info last updated: 2024.12.16-23:17:03 UTC
Event first association/location: 2024.12.16-22:23:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA