Early-est:     Solomon Islands    2025.04.10-17:16:36.03    q:B      mb:4.8*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1744305396145.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1744305396145.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1744305396145.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: 4.8* [16]    Mwp: - [0]    Mwpd: - [0]
Region: Solomon Islands
Origin Time: 2025.04.10-17:16:36.03 UTC
Hypocenter: lat: -7.83°  lon: 158.67°  [+/-14km]    depth: 59km  [+/-17km]
Location Quality: qualityCode:  B     stdErr: 1.6s   assocPhases: 41   usedPhases: 21
minDist: 2.0°   maxDist: 124.4°   AzGap: 67°   2ndAzGap: 95°   atten: -0.62 [+/-0.31]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 14km   azMaxHorUnc: 45°
68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 48°   majorAxisPlunge: 18°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 181°   intermediateAxisPlunge: 64°   semiMinorAxisLength: 15km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 93%
T50Ex: 0.4 [9]    Td: -s [0]    Td*T50Ex: - [0]    To: 9.4s [9]
Closest plate boundaries:
   Pacific / Australia [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 (170km)
 no
 no
Prob underwater:
 93%
 93%
 93%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       59km
       59km
       59km
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.1744305396145.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 57°   dip: 11°   rake: -70°
Nodal Plane 2: strike: 217°   dip: 79°   rake: -94°
Quality: azimuthalGap: -1°   stationPolarityCount: 16   misfitWeightCount: 7.3   misfit: 0.07   stationDistributionRatio: 0.53   meanDistP: 44.0   meanDistT: 37.6   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1744305396145.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.1744305396145.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 29°   dip: 12°   rake: -86°
Nodal Plane 2: strike: 205°   dip: 78°   rake: -91°
Quality: azimuthalGap: 81°   stationPolarityCount: 16   misfit: 0.27   stationDistributionRatio: 0.75   rmsAngDiffAccPref: 36.94   fracAcc30degPref: 0.55   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1744305396145.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1744305396145
Event info last updated: 2025.04.10-18:15:00 UTC
Event first association/location: 2025.04.10-17:24:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA