Early-est:     Bonin Islands, Japan Region    2024.12.15-19:36:43.27    q:D      mb:-    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1734291403285.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1734291403285.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1734291403285.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: 5.6X [3]    Mwp: 4.7X [1]    Mwpd: 5.2Xinv [1]
Region: Bonin Islands, Japan Region
Origin Time: 2024.12.15-19:36:43.27 UTC
Hypocenter: lat: 27.89°  lon: 137.56°  [+/-61km]    depth: 42km  [+/-59km]
Location Quality: qualityCode:  D     stdErr: 1.4s   assocPhases: 8   usedPhases: 5
minDist: 6.6°   maxDist: 29.6°   AzGap: 179°   2ndAzGap: 306°   atten: -1.33 [+/-1.81]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 26km   maxHorUnc: 61km   azMaxHorUnc: 80°
68%ConfEllipsoid:   semiMajorAxisLength: 85km   majorAxisAzimuth: 263°   majorAxisPlunge: 32°   semiIntermediateAxisLength: 45km   intermediateAxisAzimuth: 48°   intermediateAxisPlunge: 53°   semiMinorAxisLength: 31km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.6X [3]    Td: 0.9Xs [2]    Td*T50Ex: - [0]    To: 45.6Xs [3]
Closest plate boundaries:
   Philippine Sea / Pacific [subduction zone]: distance: ~520km
   Amur / Philippine Sea [subduction zone]: distance: ~550km
   Okinawa / Philippine Sea [subduction zone]: distance: ~560km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 no
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       42km
       42km
       42km
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.1734291403285.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (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
./hypo.1734291403285.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.1734291403285.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (No solution available)
Nodal Plane 1: strike: 999°   dip: 99°   rake: 999°
Nodal Plane 2: strike: 324°   dip: 13°   rake: 135°
Quality: azimuthalGap: 0°   stationPolarityCount: 4   misfit: 0.99   stationDistributionRatio: 0.00   rmsAngDiffAccPref: 0.00   fracAcc30degPref: 0.00   qualityCode: F
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1734291403285.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1734291403285
Event info last updated: 2024.12.15-20:35:02 UTC
Event first association/location: 2024.12.15-19:44:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA