Early-est:     Santa Cruz Islands    2024.12.20-14:10:50.02    q:B      mb:4.6*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1734703846004.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734703846004.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734703846004.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: 4.6* [17]    Mwp: - [0]    Mwpd: - [0]
Region: Santa Cruz Islands
Origin Time: 2024.12.20-14:10:50.02 UTC
Hypocenter: lat: -11.90°  lon: 166.30°  [+/-17km]    depth: 80km  [+/-17km]
Location Quality: qualityCode:  B     stdErr: 1.2s   assocPhases: 55   usedPhases: 13
minDist: 8.9°   maxDist: 126.8°   AzGap: 137°   2ndAzGap: 201°   atten: -1.89 [+/-0.33]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 17km   azMaxHorUnc: 123°
68%ConfEllipsoid:   semiMajorAxisLength: 21km   majorAxisAzimuth: 123°   majorAxisPlunge: 3°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 5°   intermediateAxisPlunge: 83°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [13]    Td: 1.1Xs [1]    Td*T50Ex: - [0]    To: 12.2s [11]
Closest plate boundaries:
   Pacific / Australia [subduction zone]: distance: ~70km
Subduction geometry:    Zone: Santa Cruz Islands/Vanuatu/Loyalty Islands: DEBUG: error: [Errno 2] No such file or directory: 'gmt'    Slab depth at epicenter: error: evaluating slab depth: -999.9
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (70km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       80km
       80km
       80km
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.1734703846004.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 169°   dip: 1°   rake: 112°
Nodal Plane 2: strike: 327°   dip: 89°   rake: 90°
Quality: azimuthalGap: -1°   stationPolarityCount: 18   misfitWeightCount: 7.7   misfit: 0.13   stationDistributionRatio: 0.37   meanDistP: 45.7   meanDistT: 50.9   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734703846004.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.1734703846004.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 196°   dip: 63°   rake: -146°
Nodal Plane 2: strike: 89°   dip: 61°   rake: -32°
Quality: azimuthalGap: 136°   stationPolarityCount: 18   misfit: 0.34   stationDistributionRatio: 0.71   rmsAngDiffAccPref: 32.97   fracAcc30degPref: 0.77   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734703846004.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734703846004
Event info last updated: 2024.12.20-15:09:01 UTC
Event first association/location: 2024.12.20-14:17:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA