Early-est:     Aru Islands Region, Indonesia    2025.11.11-21:23:34.37    q:B      mb:4.9    Mwp:-    Mwpd:-    Td*T50Ex:0.5     fmamp_polarity:     hash:     fmamp_amp_aref:     fmamp_amp_mwp:

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

Earthquake Details: Magnitude: mb: 4.9 [37]    Mwp: - [0]    Mwpd: - [0] Region: Aru Islands Region, Indonesia Origin Time: 2025.11.11-21:23:34.37 UTC Hypocenter: lat: -5.43°  lon: 133.90°  [+/-17km]    depth: 16km  [+/-20km] Location Quality: qualityCode:  B     stdErr: 1.5s   assocPhases: 86   usedPhases: 46 minDist: 7.4°   maxDist: 156.7°   AzGap: 54°   2ndAzGap: 61°   atten: -0.81 [+/-0.20] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 17km   azMaxHorUnc: 10° 68%ConfEllipsoid:   semiMajorAxisLength: 22km   majorAxisAzimuth: 178°   majorAxisPlunge: 45°   semiIntermediateAxisLength: 19km   intermediateAxisAzimuth: 30°   intermediateAxisPlunge: 40°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [33]    Td: 1.0s [5]    Td*T50Ex: 0.5 [5]    To: 26.7s [25] Closest plate boundaries:    Banda Sea - Australia [continental rift boundary]: distance: ~30km    Birds Head - Banda Sea [oceanic convergent boundary]: distance: ~70km    Australia - Birds Head [continental rift boundary]: distance: ~70km    Birds Head \ Banda 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 (170km)  YES (70km)  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    0.5    0.5    0.5 Td*To:      26.7      26.7      26.7 Mwp magnitude:        -        -        - Hypocenter depth:        16km        16km        16km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 152°   dip: 16°   rake: -122° Nodal Plane 2: strike: 5°   dip: 76°   rake: -81° Quality: azimuthalGap: -1°   stationPolarityCount: 41   misfitWeightCount: 10.7   misfit: 0.13   stationDistributionRatio: 0.40   meanDistP: 26.6   meanDistT: 31.7   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 14°   dip: 72°   rake: -118° Nodal Plane 2: strike: 255°   dip: 33°   rake: -34° Quality: azimuthalGap: 62°   stationPolarityCount: 41   misfit: 0.31   stationDistributionRatio: 0.68   rmsAngDiffAccPref: 26.73   fracAcc30degPref: 0.71   qualityCode: C Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
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
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

Event ID: smi:KOERI/ee/event/1762896218921
Event info last updated: 2025.11.11-22:23:54 UTC
Event first association/location: 2025.11.11-21:29:26 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI