Early-est:     Minahassa Peninsula, Sulawesi    2025.01.28-14:53:34.83    q:A      mb:5.4    Mwp:5.7    Mwpd:-    Td*T50Ex:1.0     fmamp_polarity:./hypo.1738076015990.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1738076015990.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1738076015990.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1738076015990.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: 5.4 [141]    Mwp: 5.7 [22]    Mwpd: 5.8Xinv [19]
Region: Minahassa Peninsula, Sulawesi
Origin Time: 2025.01.28-14:53:34.83 UTC
Hypocenter: lat: 0.46°  lon: 121.21°  [+/-15km]    depth: 88km  [+/-15km]
Location Quality: qualityCode:  A     stdErr: 1.0s   assocPhases: 241   usedPhases: 195
minDist: 5.7°   maxDist: 170.4°   AzGap: 37°   2ndAzGap: 53°   atten: -1.01 [+/-0.14]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 15km   azMaxHorUnc: 4°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 183°   majorAxisPlunge: 4°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 88°   intermediateAxisPlunge: 55°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 68%
T50Ex: 0.5 [105]    Td: 2.2s [20]    Td*T50Ex: 1.0 [20]    To: 2.4s [96]
Closest plate boundaries:
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:
 68%
 68%
 68%
Td*T50Ex:
   1.0
   1.0
   1.0
Td*To:
     5.3
     5.3
     5.3
Mwp magnitude:
       5.7
       5.7
       5.7
Hypocenter depth:
       88km
       88km
       88km
Slab depth at epicenter:
       n/a
       -
       -
./hypo.1738076015990.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):
Nodal Plane 1: strike: 112°   dip: 31°   rake: -145°
Nodal Plane 2: strike: 351°   dip: 73°   rake: -64°
Quality: azimuthalGap: -1°   stationPolarityCount: 171   misfitWeightCount: 37.0   misfit: 0.20   stationDistributionRatio: 0.43   meanDistP: 19.5   meanDistT: 16.7   qualityCode: B
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1738076015990.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 112°   dip: 68°   rake: 170°
Nodal Plane 2: strike: 206°   dip: 80°   rake: 22°
Quality: azimuthalGap: 52°   stationPolarityCount: 171   misfit: 0.25   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 26.13   fracAcc30degPref: 0.83   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1738076015990.mech.hash.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 131°   dip: 49°   rake: -127°
Nodal Plane 2: strike: 0°   dip: 53°   rake: -55°
Quality: azimuthalGap: -1°   stationPolarityCount: 35   misfitWeightCount: 8.8   misfit: 9999.90   stationDistributionRatio: 0.90   meanDistP: 25.0   meanDistT: 28.4   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_amp_aref
./hypo.1738076015990.mech.fmamp_amp_aref.mechanism.jpg
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 122°   dip: 49°   rake: -147°
Nodal Plane 2: strike: 9°   dip: 66°   rake: -46°
Quality: azimuthalGap: -1°   stationPolarityCount: 20   misfitWeightCount: 4.8   misfit: 9999.90   stationDistributionRatio: 0.46   meanDistP: 31.4   meanDistT: 32.3   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_amp_mwp
./hypo.1738076015990.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1738076015990
Event info last updated: 2025.01.28-15:54:07 UTC
Event first association/location: 2025.01.28-14:58:47 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI