Early-est:     Central Peru    2025.01.29-04:11:22.82    q:B      mb:4.6    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1738123882641.mech.fmamp_polarity.thumb.jpg     hash:./hypo.1738123882641.mech.hash.thumb.jpg     fmamp_amp_aref:./hypo.1738123882641.mech.fmamp_amp_aref.thumb.jpg     fmamp_amp_mwp:./hypo.1738123882641.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: 4.6 [31]    Mwp: - [0]    Mwpd: - [0]
Region: Central Peru
Origin Time: 2025.01.29-04:11:22.82 UTC
Hypocenter: lat: -11.24°  lon: -74.76°  [+/-15km]    depth: 96km  [+/-17km]
Location Quality: qualityCode:  B     stdErr: 0.9s   assocPhases: 60   usedPhases: 36
minDist: 2.2°   maxDist: 149.6°   AzGap: 79°   2ndAzGap: 106°   atten: -1.46 [+/-0.26]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 15km   azMaxHorUnc: 52°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 230°   majorAxisPlunge: 30°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 76°   intermediateAxisPlunge: 58°   semiMinorAxisLength: 16km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.2 [12]    Td: 0.8Xs [3]    Td*T50Ex: - [0]    To: 1.0s [9]
Closest plate boundaries:
Subduction geometry:    Zone: South America    Slab depth at epicenter: 83km
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:
       96km
       96km
       96km
Slab depth at epicenter:
       83km
       -
       -
./hypo.1738123882641.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 274°   dip: 50°   rake: 41°
Nodal Plane 2: strike: 155°   dip: 60°   rake: 132°
Quality: azimuthalGap: -1°   stationPolarityCount: 34   misfitWeightCount: 14.1   misfit: 0.12   stationDistributionRatio: 0.59   meanDistP: 29.5   meanDistT: 23.0   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1738123882641.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 158°   dip: 52°   rake: 121°
Nodal Plane 2: strike: 294°   dip: 48°   rake: 57°
Quality: azimuthalGap: 105°   stationPolarityCount: 34   misfit: 0.19   stationDistributionRatio: 0.73   rmsAngDiffAccPref: 25.44   fracAcc30degPref: 0.87   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1738123882641.mech.hash.mechanism.jpg
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
./hypo.1738123882641.mech.fmamp_amp_aref.mechanism.jpg
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
./hypo.1738123882641.mech.fmamp_amp_mwp.mechanism.jpg

Event ID: smi:KOERI/ee/event/1738123882641
Event info last updated: 2025.01.29-05:12:01 UTC
Event first association/location: 2025.01.29-04:17:49 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI