Early-est:     Vanuatu Islands    2024.12.20-17:05:01.27    q:B      mb:4.6*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1734714301261.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734714301261.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734714301261.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* [4]    Mwp: 5.0X [1]    Mwpd: - [0]
Region: Vanuatu Islands
Origin Time: 2024.12.20-17:05:01.27 UTC
Hypocenter: lat: -18.15°  lon: 167.85°  [+/-13km]    depth: 84km  [+/-16km]
Location Quality: qualityCode:  B     stdErr: 0.9s   assocPhases: 12   usedPhases: 9
minDist: 4.1°   maxDist: 31.7°   AzGap: 188°   2ndAzGap: 261°   atten: -1.66 [+/-0.32]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 13km   azMaxHorUnc: 4°
68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 7°   majorAxisPlunge: 52°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 181°   intermediateAxisPlunge: 38°   semiMinorAxisLength: 15km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.0X [1]    Td: 7.4Xs [1]    Td*T50Ex: - [0]    To: 0.9Xs [1]
Closest plate boundaries:
   New Hebrides / Australia [subduction zone]: distance: ~50km
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 (50km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       84km
       84km
       84km
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.1734714301261.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 26°   dip: 43°   rake: -24°
Nodal Plane 2: strike: 134°   dip: 74°   rake: -131°
Quality: azimuthalGap: -1°   stationPolarityCount: 8   misfitWeightCount: 4.2   misfit: 0.00   stationDistributionRatio: 0.57   meanDistP: 45.7   meanDistT: 47.1   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734714301261.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.1734714301261.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 152°   dip: 61°   rake: -148°
Nodal Plane 2: strike: 46°   dip: 62°   rake: -33°
Quality: azimuthalGap: 103°   stationPolarityCount: 8   misfit: 0.23   stationDistributionRatio: 0.57   rmsAngDiffAccPref: 45.12   fracAcc30degPref: 0.36   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734714301261.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734714301261
Event info last updated: 2024.12.20-18:04:00 UTC
Event first association/location: 2024.12.20-17:18:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA