Early-est:     Southeast of Loyalty Islands    2024.12.16-18:12:20.12    q:B      mb:4.7*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1734372732690.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734372732690.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734372732690.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: 4.7* [11]    Mwp: - [0]    Mwpd: - [0]
Region: Southeast of Loyalty Islands
Origin Time: 2024.12.16-18:12:20.12 UTC
Hypocenter: lat: -21.83°  lon: 171.00°  [+/-22km]    depth: 15km  [+/-16km]
Location Quality: qualityCode:  B     stdErr: 1.7s   assocPhases: 19   usedPhases: 17
minDist: 3.4°   maxDist: 156.4°   AzGap: 106°   2ndAzGap: 126°   atten: -1.50 [+/-0.21]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 22km   azMaxHorUnc: 52°
68%ConfEllipsoid:   semiMajorAxisLength: 27km   majorAxisAzimuth: 231°   majorAxisPlunge: 4°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 140°   intermediateAxisPlunge: 21°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.3 [6]    Td: 3.3Xs [1]    Td*T50Ex: - [0]    To: 4.4s [6]
Closest plate boundaries:
   New Hebrides / Australia [subduction zone]: distance: ~120km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (120km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
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.1734372732690.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 229°   dip: 19°   rake: -129°
Nodal Plane 2: strike: 89°   dip: 75°   rake: -78°
Quality: azimuthalGap: -1°   stationPolarityCount: 14   misfitWeightCount: 3.5   misfit: 0.00   stationDistributionRatio: 0.31   meanDistP: 50.2   meanDistT: 54.3   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734372732690.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.1734372732690.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 217°   dip: 88°   rake: 154°
Nodal Plane 2: strike: 308°   dip: 64°   rake: 2°
Quality: azimuthalGap: 124°   stationPolarityCount: 14   misfit: 0.18   stationDistributionRatio: 0.59   rmsAngDiffAccPref: 39.09   fracAcc30degPref: 0.41   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734372732690.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734372732690
Event info last updated: 2024.12.16-19:11:00 UTC
Event first association/location: 2024.12.16-18:18:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA