Early-est:     Chile - Argentina Border Region    2025.01.26-09:59:59.22    q:B      mb:4.4    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: 4.4 [4]    Mwp: - [0]    Mwpd: - [0] Region: Chile - Argentina Border Region Origin Time: 2025.01.26-09:59:59.22 UTC Hypocenter: lat: -30.61°  lon: -70.74°  [+/-12km]    depth: 209km  [+/-14km] Location Quality: qualityCode:  B     stdErr: 0.9s   assocPhases: 10   usedPhases: 8 minDist: 0.4°   maxDist: 80.0°   AzGap: 137°   2ndAzGap: 171°   atten: -9.90 [+/-0.00] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 10km   maxHorUnc: 12km   azMaxHorUnc: 173° 68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 354°   majorAxisPlunge: 44°   semiIntermediateAxisLength: 12km   intermediateAxisAzimuth: 96°   intermediateAxisPlunge: 13°   semiMinorAxisLength: 12km Tsunamigeneic Assesment: Discriminants: Prob Underwater: <1% T50Ex: 0.0 [4]    Td: -s [0]    Td*T50Ex: - [0]    To: 19.7Xs [2] Closest plate boundaries:    Nazca \ South America [subduction zone]: distance: ~180km Subduction geometry:    Zone: South America    Slab depth at epicenter: 65km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (180km)  no  no Prob underwater:  <1%  <1%  <1% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        209km        209km        209km Slab depth at epicenter:        65km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (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/_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: 0°   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: 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
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

Event ID: smi:KOERI/ee/event/1737885599215
Event info last updated: 2025.01.26-11:00:01 UTC
Event first association/location: 2025.01.26-10:13:01 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI