Early-est:     Peru - Bolivia Border Region    2025.01.30-22:17:14.35    q:B      mb:4.3    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: 4.3 [9]    Mwp: 4.4X [1]    Mwpd: - [0] Region: Peru - Bolivia Border Region Origin Time: 2025.01.30-22:17:14.35 UTC Hypocenter: lat: -16.63°  lon: -69.72°  [+/-29km]    depth: 174km  [+/-27km] Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 18   usedPhases: 13 minDist: 1.6°   maxDist: 141.8°   AzGap: 153°   2ndAzGap: 193°   atten: -1.71 [+/-0.45] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 29km   azMaxHorUnc: 105° 68%ConfEllipsoid:   semiMajorAxisLength: 41km   majorAxisAzimuth: 104°   majorAxisPlunge: 32°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 315°   intermediateAxisPlunge: 54°   semiMinorAxisLength: 15km Tsunamigeneic Assesment: Discriminants: Prob Underwater: <1% T50Ex: 0.2 [6]    Td: 0.3Xs [1]    Td*T50Ex: - [0]    To: 2.0Xs [3] Closest plate boundaries: Subduction geometry:    Zone: South America    Slab depth at epicenter: 166km 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:        174km        174km        174km Slab depth at epicenter:        166km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 312°   dip: 37°   rake: -30° Nodal Plane 2: strike: 67°   dip: 72°   rake: -123° Quality: azimuthalGap: -1°   stationPolarityCount: 12   misfitWeightCount: 6.4   misfit: 0.06   stationDistributionRatio: 0.55   meanDistP: 30.4   meanDistT: 43.8   qualityCode: D Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 77°   dip: 79°   rake: -129° Nodal Plane 2: strike: 334°   dip: 40°   rake: -17° Quality: azimuthalGap: 93°   stationPolarityCount: 12   misfit: 0.18   stationDistributionRatio: 0.69   rmsAngDiffAccPref: 45.57   fracAcc30degPref: 0.35   qualityCode: D 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/1738275434064
Event info last updated: 2025.01.30-23:17:32 UTC
Event first association/location: 2025.01.30-22:23:02 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI