Early-est:     Solomon Islands    2024.12.15-01:34:13.10    q:B      mb:4.8*    Mwp:-    Mwpd:-    Td*T50Ex:0.9     fmamp_polarity:     fmamp_polarity_waveform:     hash:

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details: Magnitude: mb: 4.8* [17]    Mwp: 5.1X [2]    Mwpd: 5.6Xinv [2] Region: Solomon Islands Origin Time: 2024.12.15-01:34:13.10 UTC Hypocenter: lat: -8.59°  lon: 156.56°  [+/-20km]    depth: 115km  [+/-24km] Location Quality: qualityCode:  B     stdErr: 1.0s   assocPhases: 23   usedPhases: 19 minDist: 6.2°   maxDist: 148.8°   AzGap: 99°   2ndAzGap: 191°   atten: -1.15 [+/-0.42] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 20km   azMaxHorUnc: 25° 68%ConfEllipsoid:   semiMajorAxisLength: 29km   majorAxisAzimuth: 18°   majorAxisPlunge: 44°   semiIntermediateAxisLength: 19km   intermediateAxisAzimuth: 259°   intermediateAxisPlunge: 27°   semiMinorAxisLength: 16km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [14]    Td: 1.8s [5]    Td*T50Ex: 0.9 [5]    To: 19.1s [13] Closest plate boundaries:    Pacific / Australia [subduction zone]: distance: ~20km    Woodlark - Australia [oceanic transform fault]: distance: ~20km    Pacific / Woodlark [subduction zone]: distance: ~50km    Woodlark - Solomon Sea [oceanic transform fault]: distance: ~170km    Pacific / Solomon Sea [subduction zone]: distance: ~170km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (20km)  no  YES (20km) Prob underwater:  >99%  >99%  >99% Td*T50Ex:    0.9    0.9    0.9 Td*To:      34.4      34.4      34.4 Mwp magnitude:        -        -        - Hypocenter depth:        115km        115km        115km 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)

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 312°   dip: 58°   rake: -1° Nodal Plane 2: strike: 43°   dip: 89°   rake: -148° Quality: azimuthalGap: -1°   stationPolarityCount: 19   misfitWeightCount: 8.1   misfit: 0.06   stationDistributionRatio: 0.54   meanDistP: 48.8   meanDistT: 40.5   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
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
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 213°   dip: 84°   rake: 140° Nodal Plane 2: strike: 309°   dip: 50°   rake: 8° Quality: azimuthalGap: 125°   stationPolarityCount: 19   misfit: 0.28   stationDistributionRatio: 0.59   rmsAngDiffAccPref: 33.54   fracAcc30degPref: 0.55   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2

Event ID: smi:alomax.net_BETA/author/ee/event/1734226452336
Event info last updated: 2024.12.15-02:33:00 UTC
Event first association/location: 2024.12.15-01:40:03 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA