Early-est:     Vanuatu Islands    2024.12.17-01:47:24.61    q:B      mb:5.9    Mwp:7.2*    Mwpd:7.2    Td*T50Ex:4.0     fmamp_polarity:./hypo.1734400043705.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734400043705.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734400043705.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: 5.9 [107]    Mwp: 7.2* [105]    Mwpd: 7.2 [102]
Region: Vanuatu Islands
Origin Time: 2024.12.17-01:47:24.61 UTC
Hypocenter: lat: -17.68°  lon: 168.16°  [+/-18km]    depth: 32km  [+/-34km]
Location Quality: qualityCode:  B     stdErr: 1.6s   assocPhases: 494   usedPhases: 232
minDist: 2.4°   maxDist: 169.1°   AzGap: 18°   2ndAzGap: 22°   atten: -1.64 [+/-0.16]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 15km   maxHorUnc: 18km   azMaxHorUnc: 49°
68%ConfEllipsoid:   semiMajorAxisLength: 35km   majorAxisAzimuth: 204°   majorAxisPlunge: 73°   semiIntermediateAxisLength: 22km   intermediateAxisAzimuth: 61°   intermediateAxisPlunge: 13°   semiMinorAxisLength: 18km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 90%
T50Ex: 0.5 [107]    Td: 7.5s [40]    Td*T50Ex: 4.0 [40]    To: 29.8s [105]
Closest plate boundaries:
   New Hebrides / Australia [subduction zone]: distance: ~90km
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 (90km)
 no
 no
Prob underwater:
 90%
 90%
 90%
Td*T50Ex:
   4.0
   4.0
   4.0
Td*To:
     223.5
     223.5
     223.5
Mwp magnitude:
       7.2*
       7.2*
       7.2*
Hypocenter depth:
       32km
       32km
       32km
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.1734400043705.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):
Nodal Plane 1: strike: 143°   dip: 38°   rake: 176°
Nodal Plane 2: strike: 237°   dip: 87°   rake: 52°
Quality: azimuthalGap: -1°   stationPolarityCount: 129   misfitWeightCount: 34.1   misfit: 0.14   stationDistributionRatio: 0.55   meanDistP: 16.8   meanDistT: 13.0   qualityCode: A
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734400043705.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):
Nodal Plane 1: strike: 167°   dip: 22°   rake: -163°
Nodal Plane 2: strike: 61°   dip: 84°   rake: -68°
Quality: azimuthalGap: -1°   stationPolarityCount: 53   misfitWeightCount: 18.0   misfit: 0.10   stationDistributionRatio: 0.51   meanDistP: 24.4   meanDistT: 24.7   qualityCode: B
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
./hypo.1734400043705.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 147°   dip: 35°   rake: 175°
Nodal Plane 2: strike: 242°   dip: 87°   rake: 56°
Quality: azimuthalGap: 23°   stationPolarityCount: 129   misfit: 0.19   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 21.54   fracAcc30degPref: 0.79   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734400043705.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734400043705
Event info last updated: 2024.12.17-02:46:03 UTC
Event first association/location: 2024.12.17-01:49:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA