Early-est:     Novaya Zemlya, Russia    2025.07.31-19:24:18.00    q:C      mb:5.0*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1753989857996.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1753989857996.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1753989857996.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: 5.0* [4]    Mwp: 4.0X [1]    Mwpd: 6.9Xinv [1]
Region: Novaya Zemlya, Russia
Origin Time: 2025.07.31-19:24:18.00 UTC
Hypocenter: lat: 72.27°  lon: 52.08°  [+/-14km]    depth: 92km  [+/-31km]
Location Quality: qualityCode:  C     stdErr: 2.0s   assocPhases: 14   usedPhases: 9
minDist: 11.6°   maxDist: 140.1°   AzGap: 119°   2ndAzGap: 212°   atten: 2.81 [+/-3.44]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 14km   azMaxHorUnc: 135°
68%ConfEllipsoid:   semiMajorAxisLength: 33km   majorAxisAzimuth: 334°   majorAxisPlunge: 69°   semiIntermediateAxisLength: 16km   intermediateAxisAzimuth: 99°   intermediateAxisPlunge: 12°   semiMinorAxisLength: 13km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.2 [6]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.2s [5]
Closest plate boundaries:
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:
       92km
       92km
       92km
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.1753989857996.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 45°   dip: 19°   rake: 27°
Nodal Plane 2: strike: 289°   dip: 81°   rake: 107°
Quality: azimuthalGap: -1°   stationPolarityCount: 9   misfitWeightCount: 2.8   misfit: 0.02   stationDistributionRatio: 0.12   meanDistP: 49.7   meanDistT: 48.8   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1753989857996.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.1753989857996.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 35°   dip: 27°   rake: 121°
Nodal Plane 2: strike: 181°   dip: 67°   rake: 75°
Quality: azimuthalGap: 147°   stationPolarityCount: 9   misfit: 0.32   stationDistributionRatio: 0.72   rmsAngDiffAccPref: 54.04   fracAcc30degPref: 0.28   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1753989857996.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1753989857996
Event info last updated: 2025.07.31-20:23:01 UTC
Event first association/location: 2025.07.31-20:10:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA