Early-est:     South Atlantic Ocean    2025.01.29-01:33:01.97    q:A      mb:5.2    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: 5.2 [42]    Mwp: 5.5X [3]    Mwpd: 5.7Xinv [2] Region: South Atlantic Ocean Origin Time: 2025.01.29-01:33:01.97 UTC Hypocenter: lat: -53.42°  lon: -41.50°  [+/-14km]    depth: 10km  [+/-14km] Location Quality: qualityCode:  A     stdErr: 1.3s   assocPhases: 105   usedPhases: 66 minDist: 3.1°   maxDist: 160.3°   AzGap: 48°   2ndAzGap: 55°   atten: -1.19 [+/-0.19] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 14km   azMaxHorUnc: 39° 68%ConfEllipsoid:   semiMajorAxisLength: 18km   majorAxisAzimuth: 224°   majorAxisPlunge: 18°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 315°   intermediateAxisPlunge: 3°   semiMinorAxisLength: 14km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.5 [32]    Td: 4.0Xs [3]    Td*T50Ex: - [0]    To: 16.6s [28] Closest plate boundaries:    Scotia - South America [oceanic convergent boundary]: distance: ~80km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  no  YES (80km)  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        10km        10km        10km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 347°   dip: 19°   rake: -76° Nodal Plane 2: strike: 151°   dip: 72°   rake: -95° Quality: azimuthalGap: -1°   stationPolarityCount: 59   misfitWeightCount: 10.8   misfit: 0.25   stationDistributionRatio: 0.41   meanDistP: 36.6   meanDistT: 42.9   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: 273°   dip: 47°   rake: -140° Nodal Plane 2: strike: 153°   dip: 61°   rake: -50° Quality: azimuthalGap: 47°   stationPolarityCount: 59   misfit: 0.37   stationDistributionRatio: 0.54   rmsAngDiffAccPref: 46.42   fracAcc30degPref: 0.44   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: 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/1738114382495
Event info last updated: 2025.01.29-02:34:02 UTC
Event first association/location: 2025.01.29-01:39:05 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI