Early-est:     Near Coast of Central Chile    2025.02.02-13:54:15.57    q:A      mb:4.8    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1738504459446.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1738504459446.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1738504459446.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1738504459446.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: 4.8 [37]    Mwp: 4.6X [2]    Mwpd: - [0]
Region: Near Coast of Central Chile
Origin Time: 2025.02.02-13:54:15.57 UTC
Hypocenter: lat: -30.68°  lon: -71.63°  [+/-3km]    depth: 34km  [+/-6km]
Location Quality: qualityCode:  A     stdErr: 1.0s   assocPhases: 76   usedPhases: 51
minDist: 0.9°   maxDist: 165.6°   AzGap: 43°   2ndAzGap: 75°   atten: -1.53 [+/-0.16]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 3km   maxHorUnc: 3km   azMaxHorUnc: 52°
68%ConfEllipsoid:   semiMajorAxisLength: 6km   majorAxisAzimuth: 267°   majorAxisPlunge: 81°   semiIntermediateAxisLength: 4km   intermediateAxisAzimuth: 49°   intermediateAxisPlunge: 7°   semiMinorAxisLength: 3km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: 15%
T50Ex: 0.4 [23]    Td: 0.2Xs [1]    Td*T50Ex: - [0]    To: 1.1s [14]
Closest plate boundaries:
   Nazca \ South America [subduction zone]: distance: ~100km
Subduction geometry:    Zone: South America    Slab depth at epicenter: 30km
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (100km)
 no
 no
Prob underwater:
 15%
 15%
 15%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       34km
       34km
       34km
Slab depth at epicenter:
       30km
       -
       -
./hypo.1738504459446.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 35°   dip: 41°   rake: -17°
Nodal Plane 2: strike: 137°   dip: 79°   rake: -130°
Quality: azimuthalGap: -1°   stationPolarityCount: 51   misfitWeightCount: 14.3   misfit: 0.19   stationDistributionRatio: 0.57   meanDistP: 34.7   meanDistT: 24.1   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1738504459446.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 112°   dip: 87°   rake: -155°
Nodal Plane 2: strike: 21°   dip: 65°   rake: -3°
Quality: azimuthalGap: 47°   stationPolarityCount: 51   misfit: 0.42   stationDistributionRatio: 0.63   rmsAngDiffAccPref: 28.65   fracAcc30degPref: 0.79   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1738504459446.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.1738504459446.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.1738504459446.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1738504459446
Event info last updated: 2025.02.02-14:54:28 UTC
Event first association/location: 2025.02.02-14:00:01 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI