Early-est:     Chile - Bolivia Border Region    2025.02.01-11:28:25.45    q:C      mb:4.0    Mwp:-    Mwpd:-    Td*T50Ex:-     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: 4.0 [5]    Mwp: - [0]    Mwpd: - [0] Region: Chile - Bolivia Border Region Origin Time: 2025.02.01-11:28:25.45 UTC Hypocenter: lat: -21.38°  lon: -68.35°  [+/-20km]    depth: 62km  [+/-30km] Location Quality: qualityCode:  C     stdErr: 1.4s   assocPhases: 13   usedPhases: 9 minDist: 1.9°   maxDist: 145.0°   AzGap: 138°   2ndAzGap: 166°   atten: -1.24 [+/-0.76] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 12km   maxHorUnc: 20km   azMaxHorUnc: 96° 68%ConfEllipsoid:   semiMajorAxisLength: 33km   majorAxisAzimuth: 281°   majorAxisPlunge: 59°   semiIntermediateAxisLength: 20km   intermediateAxisAzimuth: 88°   intermediateAxisPlunge: 31°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: <1% T50Ex: 0.8X [3]    Td: -s [0]    Td*T50Ex: - [0]    To: -s [0] Closest plate boundaries:    Altiplano - South America [continental rift boundary]: distance: ~20km    Nazca \ Altiplano [subduction zone]: distance: ~300km    Nazca \ South America [subduction zone]: distance: ~310km Subduction geometry:    Zone: South America    Slab depth at epicenter: 117km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  no  no  no Prob underwater:  <1%  <1%  <1% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        62km        62km        62km Slab depth at epicenter:        117km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (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/_polarity
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: 170°   stationPolarityCount: 7   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: F 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/1738409305453
Event info last updated: 2025.02.01-12:28:03 UTC
Event first association/location: 2025.02.01-12:27:51 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI