Early-est:     Solomon Islands    2025.01.31-12:04:12.95    q:A      mb:5.2    Mwp:5.5    Mwpd:-    Td*T50Ex:1.0     fmamp_polarity:./hypo.1738325052515.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1738325052515.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1738325052515.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1738325052515.mech.fmamp_amp_mwp.thumb.jpg

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

Earthquake Details:
Magnitude: mb: 5.2 [37]    Mwp: 5.5 [5]    Mwpd: - [0]
Region: Solomon Islands
Origin Time: 2025.01.31-12:04:12.95 UTC
Hypocenter: lat: -10.51°  lon: 163.44°  [+/-14km]    depth: 20km  [+/-14km]
Location Quality: qualityCode:  A     stdErr: 1.6s   assocPhases: 69   usedPhases: 42
minDist: 3.6°   maxDist: 145.5°   AzGap: 92°   2ndAzGap: 114°   atten: -1.35 [+/-0.17]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 14km   azMaxHorUnc: 49°
68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 229°   majorAxisPlunge: 4°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 139°   intermediateAxisPlunge: 1°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [35]    Td: 2.8s [7]    Td*T50Ex: 1.0 [7]    To: 11.7s [23]
Closest plate boundaries:
   Pacific / Australia [oceanic transform fault]: distance: ~80km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   1.0
   1.0
   1.0
Td*To:
     32.8
     32.8
     32.8
Mwp magnitude:
       5.5
       5.5
       5.5
Hypocenter depth:
       20km
       20km
       20km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1738325052515.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 357°   dip: 63°   rake: 165°
Nodal Plane 2: strike: 94°   dip: 77°   rake: 28°
Quality: azimuthalGap: -1°   stationPolarityCount: 36   misfitWeightCount: 9.5   misfit: 0.08   stationDistributionRatio: 0.34   meanDistP: 31.8   meanDistT: 40.0   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1738325052515.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 150°   dip: 81°   rake: 163°
Nodal Plane 2: strike: 243°   dip: 74°   rake: 9°
Quality: azimuthalGap: 91°   stationPolarityCount: 36   misfit: 0.17   stationDistributionRatio: 0.66   rmsAngDiffAccPref: 19.80   fracAcc30degPref: 0.91   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1738325052515.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (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/_amp_aref
./hypo.1738325052515.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (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/_amp_mwp
./hypo.1738325052515.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1738325052515
Event info last updated: 2025.01.31-13:05:03 UTC
Event first association/location: 2025.01.31-12:09:28 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI