Early-est:     Vanuatu Islands    2024.12.18-17:53:21.45    q:A      mb:5.3*    Mwp:-    Mwpd:-    Td*T50Ex:0.7     fmamp_polarity:./hypo.1734544408939.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734544408939.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734544408939.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: 5.3* [47]    Mwp: 5.3X [2]    Mwpd: 5.8Xinv [1]
Region: Vanuatu Islands
Origin Time: 2024.12.18-17:53:21.45 UTC
Hypocenter: lat: -17.47°  lon: 168.26°  [+/-18km]    depth: 15km  [+/-22km]
Location Quality: qualityCode:  A     stdErr: 1.3s   assocPhases: 133   usedPhases: 107
minDist: 4.9°   maxDist: 167.3°   AzGap: 87°   2ndAzGap: 118°   atten: -1.12 [+/-0.19]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 18km   azMaxHorUnc: 31°
68%ConfEllipsoid:   semiMajorAxisLength: 26km   majorAxisAzimuth: 212°   majorAxisPlunge: 44°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 25°   intermediateAxisPlunge: 46°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 86%
T50Ex: 0.4 [37]    Td: 2.0s [8]    Td*T50Ex: 0.7 [8]    To: 2.4s [37]
Closest plate boundaries:
   New Hebrides / Australia [subduction zone]: distance: ~110km
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 (110km)
 no
 no
Prob underwater:
 86%
 86%
 86%
Td*T50Ex:
   0.7
   0.7
   0.7
Td*To:
     4.8
     4.8
     4.8
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       15km
       15km
       15km
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.1734544408939.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 76°   dip: 21°   rake: -160°
Nodal Plane 2: strike: 327°   dip: 83°   rake: -70°
Quality: azimuthalGap: -1°   stationPolarityCount: 40   misfitWeightCount: 9.9   misfit: 0.19   stationDistributionRatio: 0.42   meanDistP: 45.4   meanDistT: 43.7   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734544408939.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.1734544408939.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 55°   dip: 59°   rake: -170°
Nodal Plane 2: strike: 319°   dip: 81°   rake: -31°
Quality: azimuthalGap: 118°   stationPolarityCount: 40   misfit: 0.21   stationDistributionRatio: 0.65   rmsAngDiffAccPref: 25.29   fracAcc30degPref: 0.89   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734544408939.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734544408939
Event info last updated: 2024.12.18-18:52:01 UTC
Event first association/location: 2024.12.18-17:58:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA