Early-est:     Java, Indonesia    2025.02.01-00:40:14.96    q:B      mb:4.7    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1738370415239.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1738370415239.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1738370415239.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1738370415239.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 [25]    Mwp: 5.8X [1]    Mwpd: - [0]
Region: Java, Indonesia
Origin Time: 2025.02.01-00:40:14.96 UTC
Hypocenter: lat: -8.89°  lon: 110.19°  [+/-21km]    depth: 20km  [+/-15km]
Location Quality: qualityCode:  B     stdErr: 1.8s   assocPhases: 62   usedPhases: 22
minDist: 10.3°   maxDist: 148.2°   AzGap: 95°   2ndAzGap: 122°   atten: -0.98 [+/-0.35]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 16km   maxHorUnc: 21km   azMaxHorUnc: 15°
68%ConfEllipsoid:   semiMajorAxisLength: 26km   majorAxisAzimuth: 195°   majorAxisPlunge: 1°   semiIntermediateAxisLength: 19km   intermediateAxisAzimuth: 285°   intermediateAxisPlunge: 1°   semiMinorAxisLength: 15km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.7 [17]    Td: 2.1Xs [1]    Td*T50Ex: - [0]    To: 36.7s [14]
Closest plate boundaries:
   Sunda / Australia [subduction zone]: distance: ~170km
Subduction geometry:    Zone: Sumatra-Java    Slab depth at epicenter: 52km
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (170km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       20km
       20km
       20km
Slab depth at epicenter:
       52km
       -
       -
./hypo.1738370415239.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 286°   dip: 68°   rake: 161°
Nodal Plane 2: strike: 23°   dip: 72°   rake: 23°
Quality: azimuthalGap: -1°   stationPolarityCount: 38   misfitWeightCount: 7.2   misfit: 0.09   stationDistributionRatio: 0.41   meanDistP: 43.4   meanDistT: 44.9   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1738370415239.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 291°   dip: 71°   rake: 147°
Nodal Plane 2: strike: 33°   dip: 59°   rake: 22°
Quality: azimuthalGap: 95°   stationPolarityCount: 38   misfit: 0.35   stationDistributionRatio: 0.61   rmsAngDiffAccPref: 21.12   fracAcc30degPref: 0.94   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1738370415239.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.1738370415239.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.1738370415239.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1738370415239
Event info last updated: 2025.02.01-01:40:16 UTC
Event first association/location: 2025.02.01-00:49:01 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI