Early-est:     Vanuatu Islands    2024.12.17-18:17:24.25    q:B      mb:5.5*    Mwp:5.5    Mwpd:-    Td*T50Ex:0.7     fmamp_polarity:./hypo.1734459447616.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734459447616.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734459447616.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: 5.5* [58]    Mwp: 5.5 [11]    Mwpd: 5.8Xinv [6]
Region: Vanuatu Islands
Origin Time: 2024.12.17-18:17:24.25 UTC
Hypocenter: lat: -17.64°  lon: 168.24°  [+/-25km]    depth: 30km  [+/-33km]
Location Quality: qualityCode:  B     stdErr: 1.2s   assocPhases: 181   usedPhases: 137
minDist: 4.7°   maxDist: 169.0°   AzGap: 32°   2ndAzGap: 35°   atten: -1.49 [+/-0.20]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 17km   maxHorUnc: 25km   azMaxHorUnc: 19°
68%ConfEllipsoid:   semiMajorAxisLength: 41km   majorAxisAzimuth: 203°   majorAxisPlunge: 48°   semiIntermediateAxisLength: 22km   intermediateAxisAzimuth: 325°   intermediateAxisPlunge: 26°   semiMinorAxisLength: 19km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 64%
T50Ex: 0.4 [52]    Td: 1.9s [15]    Td*T50Ex: 0.7 [15]    To: 4.1s [51]
Closest plate boundaries:
   New Hebrides / Australia [subduction zone]: distance: ~100km
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 (100km)
 no
 no
Prob underwater:
 64%
 64%
 64%
Td*T50Ex:
   0.7
   0.7
   0.7
Td*To:
     7.8
     7.8
     7.8
Mwp magnitude:
       5.5
       5.5
       5.5
Hypocenter depth:
       30km
       30km
       30km
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.1734459447616.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):
Nodal Plane 1: strike: 91°   dip: 5°   rake: 171°
Nodal Plane 2: strike: 190°   dip: 89°   rake: 85°
Quality: azimuthalGap: -1°   stationPolarityCount: 60   misfitWeightCount: 15.4   misfit: 0.14   stationDistributionRatio: 0.71   meanDistP: 29.3   meanDistT: 28.2   qualityCode: B
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734459447616.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.1734459447616.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 280°   dip: 29°   rake: -1°
Nodal Plane 2: strike: 10°   dip: 90°   rake: -119°
Quality: azimuthalGap: 51°   stationPolarityCount: 60   misfit: 0.17   stationDistributionRatio: 0.64   rmsAngDiffAccPref: 27.19   fracAcc30degPref: 0.68   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734459447616.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734459447616
Event info last updated: 2024.12.17-19:16:01 UTC
Event first association/location: 2024.12.17-18:23:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA