Early-est:     Southeast of Easter Island    2025.01.28-00:59:52.24    q:A      mb:5.2    Mwp:5.8    Mwpd:-    Td*T50Ex:2.0     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 [66]    Mwp: 5.8 [25]    Mwpd: 5.9Xinv [18] Region: Southeast of Easter Island Origin Time: 2025.01.28-00:59:52.24 UTC Hypocenter: lat: -41.02°  lon: -90.46°  [+/-8km]    depth: 20km  [+/-11km] Location Quality: qualityCode:  A     stdErr: 1.4s   assocPhases: 189   usedPhases: 158 minDist: 11.8°   maxDist: 172.5°   AzGap: 22°   2ndAzGap: 39°   atten: -0.96 [+/-0.18] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 7km   maxHorUnc: 8km   azMaxHorUnc: 69° 68%ConfEllipsoid:   semiMajorAxisLength: 12km   majorAxisAzimuth: 77°   majorAxisPlunge: 50°   semiIntermediateAxisLength: 9km   intermediateAxisAzimuth: 218°   intermediateAxisPlunge: 34°   semiMinorAxisLength: 8km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [32]    Td: 4.8s [14]    Td*T50Ex: 2.0 [14]    To: 11.3s [23] Closest plate boundaries:    Antarctica - Nazca [oceanic transform fault]: distance: ~20km Subduction geometry: none or not available Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  no  no  YES (20km) Prob underwater:  >99%  >99%  >99% Td*T50Ex:    2.0    2.0    2.0 Td*To:      54.2      54.2      54.2 Mwp magnitude:        5.8        5.8        5.8 Hypocenter depth:        20km        20km        20km Slab depth at epicenter:        n/a        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 24°   dip: 11°   rake: 179° Nodal Plane 2: strike: 115°   dip: 90°   rake: 79° Quality: azimuthalGap: -1°   stationPolarityCount: 125   misfitWeightCount: 18.2   misfit: 0.18   stationDistributionRatio: 0.42   meanDistP: 29.5   meanDistT: 25.4   qualityCode: C 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: 38°   rake: -176° Nodal Plane 2: strike: 344°   dip: 88°   rake: -52° Quality: azimuthalGap: 21°   stationPolarityCount: 125   misfit: 0.37   stationDistributionRatio: 0.48   rmsAngDiffAccPref: 33.70   fracAcc30degPref: 0.71   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 41°   dip: 20°   rake: -147° Nodal Plane 2: strike: 279°   dip: 79°   rake: -73° Quality: azimuthalGap: -1°   stationPolarityCount: 35   misfitWeightCount: 7.8   misfit: 9999.90   stationDistributionRatio: 0.50   meanDistP: 32.9   meanDistT: 35.6   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_amp_aref
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (Warning: Unreliable solution, qualityCode=C) Nodal Plane 1: strike: 92°   dip: 74°   rake: -173° Nodal Plane 2: strike: 0°   dip: 84°   rake: -16° Quality: azimuthalGap: -1°   stationPolarityCount: 21   misfitWeightCount: 4.3   misfit: 9999.90   stationDistributionRatio: 0.28   meanDistP: 33.4   meanDistT: 29.1   qualityCode: C Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_amp_mwp

Event ID: smi:KOERI/ee/event/1738026001856
Event info last updated: 2025.01.28-02:00:05 UTC
Event first association/location: 2025.01.28-01:09:02 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI