Early-est:     Tunisia    2025.04.09-19:56:06.28    q:B      mb:4.0*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1744228566452.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1744228566452.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1744228566452.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: 4.0* [6]    Mwp: - [0]    Mwpd: - [0]
Region: Tunisia
Origin Time: 2025.04.09-19:56:06.28 UTC
Hypocenter: lat: 34.59°  lon: 10.04°  [+/-6km]    depth: 14km  [+/-7km]
Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 15   usedPhases: 14
minDist: 2.6°   maxDist: 162.7°   AzGap: 133°   2ndAzGap: 198°   atten: -1.67 [+/-0.31]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 5km   maxHorUnc: 6km   azMaxHorUnc: 106°
68%ConfEllipsoid:   semiMajorAxisLength: 8km   majorAxisAzimuth: 106°   majorAxisPlunge: 22°   semiIntermediateAxisLength: 7km   intermediateAxisAzimuth: 276°   intermediateAxisPlunge: 68°   semiMinorAxisLength: 7km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: <1%
T50Ex: 0.3 [4]    Td: -s [0]    Td*T50Ex: - [0]    To: 2.4s [4]
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:
 <1%
 <1%
 <1%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       14km
       14km
       14km
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.1744228566452.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 146°   dip: 26°   rake: -132°
Nodal Plane 2: strike: 11°   dip: 71°   rake: -72°
Quality: azimuthalGap: -1°   stationPolarityCount: 9   misfitWeightCount: 2.9   misfit: 0.00   stationDistributionRatio: 0.40   meanDistP: 51.5   meanDistT: 54.9   qualityCode: D
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1744228566452.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.1744228566452.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: 265°   stationPolarityCount: 9   misfit: 0.99   stationDistributionRatio: 0.70   rmsAngDiffAccPref: 42.78   fracAcc30degPref: 0.00   qualityCode: E
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1744228566452.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1744228566452
Event info last updated: 2025.04.09-20:55:01 UTC
Event first association/location: 2025.04.09-20:01:00 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA