Early-est:     Sumba Region, Indonesia    2025.02.03-21:30:48.52    q:B      mb:4.5    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:     hash:     fmamp_amp_aref:     fmamp_amp_mwp:

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details: Magnitude: mb: 4.5 [20]    Mwp: - [0]    Mwpd: - [0] Region: Sumba Region, Indonesia Origin Time: 2025.02.03-21:30:48.52 UTC Hypocenter: lat: -10.47°  lon: 120.20°  [+/-15km]    depth: 2km  [+/-30km] Location Quality: qualityCode:  B     stdErr: 1.3s   assocPhases: 57   usedPhases: 21 minDist: 9.3°   maxDist: 170.2°   AzGap: 122°   2ndAzGap: 134°   atten: -0.86 [+/-0.19] Location Uncertainty: 68%ConfEllipse:   minHorUnc: 14km   maxHorUnc: 15km   azMaxHorUnc: 101° 68%ConfEllipsoid:   semiMajorAxisLength: 30km   majorAxisAzimuth: 85°   majorAxisPlunge: 74°   semiIntermediateAxisLength: 18km   intermediateAxisAzimuth: 311°   intermediateAxisPlunge: 11°   semiMinorAxisLength: 17km Tsunamigeneic Assesment: Discriminants: Prob Underwater: >99% T50Ex: 0.4 [15]    Td: 5.0Xs [1]    Td*T50Ex: - [0]    To: 13.3s [6] Closest plate boundaries:    Sunda - Timor [continental transform fault]: distance: ~100km    Sunda / Australia [subduction zone]: distance: ~120km    Timor - Australia [oceanic convergent boundary]: distance: ~140km Subduction geometry:    Zone: Sumatra-Java    Slab depth at epicenter: 22km Decision table (TEST!): Event type: Subduction Zone Other Thrust/Normal Strike-slip Compatible close plate boundary?:  YES (120km)  no  no Prob underwater:  >99%  >99%  >99% Td*T50Ex:    -    -    - Td*To:      -      -      - Mwp magnitude:        -        -        - Hypocenter depth:        2km        2km        2km Slab depth at epicenter:        22km        -        -

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 72°   dip: 54°   rake: -18° Nodal Plane 2: strike: 172°   dip: 75°   rake: -142° Quality: azimuthalGap: -1°   stationPolarityCount: 23   misfitWeightCount: 7.8   misfit: 0.16   stationDistributionRatio: 0.31   meanDistP: 42.8   meanDistT: 50.1   qualityCode: D Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D) Nodal Plane 1: strike: 92°   dip: 67°   rake: -99° Nodal Plane 2: strike: 294°   dip: 25°   rake: -70° Quality: azimuthalGap: 122°   stationPolarityCount: 23   misfit: 0.31   stationDistributionRatio: 0.73   rmsAngDiffAccPref: 44.18   fracAcc30degPref: 0.26   qualityCode: D Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
First-motion Focal Mechanism (FMAMP_AMP_AREF):    (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/_amp_aref
First-motion Focal Mechanism (FMAMP_AMP_MWP):    (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/_amp_mwp

Event ID: smi:KOERI/ee/event/1738618252073
Event info last updated: 2025.02.03-22:31:03 UTC
Event first association/location: 2025.02.03-21:36:47 UTC
Software: Early-est 1.2.0 (2016.06.27)
Agency: KOERI