Early-est:     Southeast of Honshu, Japan    2024.12.15-17:35:18.77    q:C      mb:4.7*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1734284116286.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734284116286.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734284116286.mech.hash.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* [5]    Mwp: - [0]    Mwpd: - [0]
Region: Southeast of Honshu, Japan
Origin Time: 2024.12.15-17:35:18.77 UTC
Hypocenter: lat: 32.51°  lon: 141.74°  [+/-32km]    depth: 65km  [+/-43km]
Location Quality: qualityCode:  C     stdErr: 1.6s   assocPhases: 14   usedPhases: 12
minDist: 1.7°   maxDist: 79.5°   AzGap: 123°   2ndAzGap: 169°   atten: -0.93 [+/-0.34]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 23km   maxHorUnc: 32km   azMaxHorUnc: 69°
68%ConfEllipsoid:   semiMajorAxisLength: 51km   majorAxisAzimuth: 256°   majorAxisPlunge: 51°   semiIntermediateAxisLength: 31km   intermediateAxisAzimuth: 26°   intermediateAxisPlunge: 28°   semiMinorAxisLength: 27km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.4 [4]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.1Xs [3]
Closest plate boundaries:
   Philippine Sea / Pacific [subduction zone]: distance: ~20km
   Okhotsk - Philippine Sea [oceanic convergent boundary]: distance: ~190km
   Pacific \ Okhotsk [subduction zone]: distance: ~190km
   Amur / Philippine Sea [subduction zone]: distance: ~360km
Subduction geometry:    Zone: Izu-Bonin: DEBUG: error: [Errno 2] No such file or directory: 'gmt'    Slab depth at epicenter: error: evaluating slab depth: -999.9
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (20km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       65km
       65km
       65km
Slab depth at epicenter:
       n/a
       -
       -
Tsunami and Rupture predictions (TEST!): No prediction: Event too small (Mwp<7.0) or too few Mwp readings (N<20)
./hypo.1734284116286.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 42°   dip: 33°   rake: 88°
Nodal Plane 2: strike: 225°   dip: 57°   rake: 92°
Quality: azimuthalGap: -1°   stationPolarityCount: 11   misfitWeightCount: 4.8   misfit: 0.08   stationDistributionRatio: 0.52   meanDistP: 49.9   meanDistT: 49.5   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1734284116286.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (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/_polarity_waveform
./hypo.1734284116286.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 244°   dip: 49°   rake: 104°
Nodal Plane 2: strike: 43°   dip: 43°   rake: 74°
Quality: azimuthalGap: 113°   stationPolarityCount: 11   misfit: 0.38   stationDistributionRatio: 0.57   rmsAngDiffAccPref: 44.76   fracAcc30degPref: 0.35   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734284116286.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734284116286
Event info last updated: 2024.12.15-18:34:00 UTC
Event first association/location: 2024.12.15-17:39:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA