Early-est:     Irian Jaya, Indonesia    2026.10.06-21:56:44.64    q:C      mb:4.7    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1791323802770.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1791323802770.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1791323802770.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1791323802770.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: 4.7 [13]    Mwp: - [0]    Mwpd: - [0]
Region: Irian Jaya, Indonesia
Origin Time: 2026.10.06-21:56:44.64 UTC
Hypocenter: lat: -3.75°  lon: 139.55°  [+/-20km]    depth: 85km  [+/-27km]
Location Quality: qualityCode:  C     stdErr: 2.1s   assocPhases: 20   usedPhases: 17
minDist: 1.7°   maxDist: 78.3°   AzGap: 116°   2ndAzGap: 193°   atten: -0.94 [+/-0.36]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 20km   azMaxHorUnc: 61°
68%ConfEllipsoid:   semiMajorAxisLength: 32km   majorAxisAzimuth: 59°   majorAxisPlunge: 48°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 256°   intermediateAxisPlunge: 41°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.6 [8]    Td: 1.4Xs [2]    Td*T50Ex: - [0]    To: 33.0s [4]
Closest plate boundaries:
   Woodlark - Maoke [continental convergent boundary]: distance: ~60km
   Australia - Maoke [continental transform fault]: distance: ~110km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 YES (60km)
 no
Prob underwater:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       85km
       85km
       85km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1791323802770.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 150°   dip: 10°   rake: 151°
Nodal Plane 2: strike: 269°   dip: 85°   rake: 81°
Quality: azimuthalGap: -1°   stationPolarityCount: 16   misfitWeightCount: 6.0   misfit: 0.06   stationDistributionRatio: 0.31   meanDistP: 31.9   meanDistT: 40.7   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1791323802770.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (No solution available)
Nodal Plane 1: strike: 999°   dip: 99°   rake: 999°
Nodal Plane 2: strike: 324°   dip: 13°   rake: 135°
Quality: azimuthalGap: 193°   stationPolarityCount: 16   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1791323802770.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: nan°
Nodal Plane 2: strike: nan°   dip: nan°   rake: nan°
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.1791323802770.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: nan°
Nodal Plane 2: strike: nan°   dip: nan°   rake: nan°
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.1791323802770.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1791323802770
Event info last updated: 2026.10.06-22:56:50 UTC
Event first association/location: 2026.10.06-22:09:03 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI