Early-est:     Catamarca Province, Argentina    2025.06.08-19:46:16.08    q:A      mb:4.7    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1749411977519.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1749411977519.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1749411977519.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1749411977519.mech.fmamp_amp_mwp.thumb.jpg

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details:
Magnitude: mb: 4.7 [26]    Mwp: - [0]    Mwpd: - [0]
Region: Catamarca Province, Argentina
Origin Time: 2025.06.08-19:46:16.08 UTC
Hypocenter: lat: -27.92°  lon: -66.97°  [+/-9km]    depth: 161km  [+/-10km]
Location Quality: qualityCode:  A     stdErr: 1.3s   assocPhases: 82   usedPhases: 44
minDist: 3.5°   maxDist: 157.1°   AzGap: 48°   2ndAzGap: 68°   atten: -1.41 [+/-0.17]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 7km   maxHorUnc: 9km   azMaxHorUnc: 12°
68%ConfEllipsoid:   semiMajorAxisLength: 12km   majorAxisAzimuth: 196°   majorAxisPlunge: 18°   semiIntermediateAxisLength: 10km   intermediateAxisAzimuth: 319°   intermediateAxisPlunge: 59°   semiMinorAxisLength: 8km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.0 [13]    Td: 1.6Xs [1]    Td*T50Ex: - [0]    To: 1.3s [6]
Closest plate boundaries:
   Nazca \ South America [subduction zone]: distance: ~490km
Subduction geometry:    Zone: South America    Slab depth at epicenter: 147km
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:
       161km
       161km
       161km
Slab depth at epicenter:
       147km
       -
       -
./hypo.1749411977519.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 71°   dip: 35°   rake: 160°
Nodal Plane 2: strike: 178°   dip: 78°   rake: 56°
Quality: azimuthalGap: -1°   stationPolarityCount: 41   misfitWeightCount: 13.3   misfit: 0.17   stationDistributionRatio: 0.49   meanDistP: 25.8   meanDistT: 28.4   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1749411977519.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 90°   dip: 84°   rake: -148°
Nodal Plane 2: strike: 356°   dip: 59°   rake: -7°
Quality: azimuthalGap: 92°   stationPolarityCount: 41   misfit: 0.36   stationDistributionRatio: 0.66   rmsAngDiffAccPref: 32.78   fracAcc30degPref: 0.69   qualityCode: C
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1749411977519.mech.hash.mechanism.jpg
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
./hypo.1749411977519.mech.fmamp_amp_aref.mechanism.jpg
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
./hypo.1749411977519.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1749411977519
Event info last updated: 2025.06.08-20:46:31 UTC
Event first association/location: 2025.06.08-19:51:05 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI