Early-est:     New Ireland Region, P.N.G.    2025.08.01-14:16:18.26    q:B      mb:4.4*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754057778257.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754057778257.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754057778257.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: 4.4* [10]    Mwp: - [0]    Mwpd: - [0]
Region: New Ireland Region, P.N.G.
Origin Time: 2025.08.01-14:16:18.26 UTC
Hypocenter: lat: -3.35°  lon: 151.59°  [+/-14km]    depth: 452km  [+/-17km]
Location Quality: qualityCode:  B     stdErr: 0.8s   assocPhases: 36   usedPhases: 19
minDist: 1.0°   maxDist: 146.0°   AzGap: 118°   2ndAzGap: 217°   atten: -1.27 [+/-0.64]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 13km   maxHorUnc: 14km   azMaxHorUnc: 122°
68%ConfEllipsoid:   semiMajorAxisLength: 19km   majorAxisAzimuth: 169°   majorAxisPlunge: 44°   semiIntermediateAxisLength: 17km   intermediateAxisAzimuth: 270°   intermediateAxisPlunge: 12°   semiMinorAxisLength: 14km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.0X [3]    Td: -s [0]    Td*T50Ex: - [0]    To: 1.0Xs [3]
Closest plate boundaries:
   North Bismarck - South Bismarck [continental transform fault]: distance: ~30km
   North Bismarck - Manus [oceanic convergent boundary]: distance: ~50km
   Manus - South Bismarck [oceanic spreading ridge]: distance: ~50km
   Pacific - North Bismarck [oceanic convergent boundary]: distance: ~170km
   South Bismarck / Solomon Sea [subduction zone]: distance: ~280km
Subduction geometry: none or not available
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (280km)
 YES (50km)
 YES (30km)
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       452km
       452km
       452km
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.1754057778257.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 19°   dip: 45°   rake: -154°
Nodal Plane 2: strike: 270°   dip: 72°   rake: -48°
Quality: azimuthalGap: -1°   stationPolarityCount: 13   misfitWeightCount: 6.2   misfit: 0.04   stationDistributionRatio: 0.55   meanDistP: 43.0   meanDistT: 49.0   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754057778257.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.1754057778257.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):
Nodal Plane 1: strike: 4°   dip: 57°   rake: -155°
Nodal Plane 2: strike: 259°   dip: 69°   rake: -36°
Quality: azimuthalGap: 136°   stationPolarityCount: 13   misfit: 0.18   stationDistributionRatio: 0.80   rmsAngDiffAccPref: 23.42   fracAcc30degPref: 0.73   qualityCode: B
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754057778257.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754057778257
Event info last updated: 2025.08.01-15:15:00 UTC
Event first association/location: 2025.08.01-15:08:01 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA